Len ; iced peed > -puprlieg th ROE: 28 Meet on JoPica "Weta terecet 19.6 aa pe yet Peer NONRae SEUNG hebeineeaegiore ie ‘STGROE © yo Bee THE BROCE BEN GS Or THE PINNEAN DOCIETY OF New SoutH WALES FOR THE YEAR JES) 0% VOL. LXII. WITH NINETEEN PLATES and 217 Text-figures. Shy, DIN EL Ye: PRINTED AND PUBLISHED FOR THE SOCIETY BY AUSTRALASIAN MEDICAL PUBLISHING CO, LTD, Seamer Street, Glebe, Sydney, and SOLD BY THE SOCIETY. 19387. ii CONTENTS. CONTENTS OF PROCEEDINGS, 1937. PARTS I-II (Nos. 269-270). (Issued 15th May, 1937.) Pages. Pyesidential Address, delivered at the Sixty-second Annual Generali Meeting, 31st March, 1937, by Mr. C. A. Sussmilch i-XXxX1li Elections XXXili Balance-sheets for the year ending 28th February, 1937 .. .. .. XXKXiV—xxxvi The Structure of Galls formed by Cyttaria septentrionalis on Fagus Moorei. By Janet M. Wilson, B.A. (Plates i-ii and twelve Text- figures. ) 1- 8 Entozoa from the Australian Hair Seal. By T. Harvey Johnston, M.A., D.Se., F.L.S. (Twelve Text-figures.) 9-16 Notes on Genus Calliphora (Diptera). Classification, Synonymy, Distribu- tion and Phylogeny. By G. H. Hardy. (One Text-figure.) 17-26 A Census of the Orchids of New South Wales, 1937. By the Rey. H. M. R. Rupp, B.A. .. 27-31 Australian Hesperiidae. vi. Descriptions of New Subspecies. By G. A. Waterhouse, D.Sc., B.K., F.R.E.S. 32-34 The Distribution of Sooty-mould Fungi and its Relation to certain Aspects of their Physiology. By Lilian Fraser, M.Sc., Linnean Macleay Fellow of the Society in Botany. (Plate iii and twelve Text-figures. ) 35-56 On the Histological Structure of some Australian Galls. By E. Kiister. (Communicated by Dr. A. B. Walkom.) (Fourteen Text-figures. ) 57-64 Final Additions to the Flora of the Comboyne Plateau. By EH. C. Chisholm, M.B., Ch.M. 65-72 Some Notes on the Nomenclature of certain Common Species of Eucalyptus. By T. G. B. Osborn, D.Sc., F.L.S. (Plate iv.) .. 138-17 PARTS III-IV (Nos. 271-272). (Issued 15th September, 19387.) Two New Species and one New Variety of Drimys Forst., with Notes on the Species of Drimys and Bubbia van Tiegh. of South-eastern Australia and Lord Howe Jsland. By Joyce W. Vickery, M.Sc. (Plate v and two Text-figures.) 78— 84 Revision of Australian Lepidoptera. Oecophoridae. vi. By A. Jefferis Turner, M.D., F.R.E.S. 85-106 CONTENTS. Australian Hesperiidae. vii. Notes on the Types and Type Localities. By G. A. Waterhouse, D.Sc., B.H., F.R.E.S. Revision of the Genus Fergusonina Mall. (Diptera, Agromyzidae). By A. L. Tonnoir. (Communicated by Dr. G. A. Currie.) (Sixteen Text-figures. ) Galls on Hucalyptus Trees. A New Type of Association between Flies and Nematodes. By G. A. Currie, D.Se., B.Sc.Agr. (Plates vi-vii and thirty-one Text-figures. ) Notes on Fossil Diatoms from New South Wales, Australia. i. Fossil Diatoms from Diatomaceous Harth, Cooma, N.S.W. By B. V. Skvortzov. (Communicated by Dr. A. B. Walkom.) (Twenty-six Text-figures. ) A Monograph of the Australian Colydiidae. By H. J. Carter, B.A., F.R.E.S., and E. H. Zeck. (Plates vili-ix and two Text-figures.) The Occurrence of the Australian Pilchard, Sardinops neopilchardus (Steind.), and its Spawning Season in New South Wales Waters, together with brief Notes on other New South Wales Clupeids. By Professor W. J. Dakin, D.Sc., C.M.Z.S. (Plate xi.) Notes on the Biology of Tabanus froggatti, T. gentilis and T. neobasalis (Diptera). By Mary EH. Fuller, B.Sc. (Plate x and thirteen Text- figures. ) The Growth of Soil on Slopes. By Professor J. Macdonald Holmes, Ph.D. (Plate xiii and three Text-figures.) Arthur Henry Shakespeare Lucas. (Memorial Series, No. 7.) (With Portrait) PARTS V-VI (Nos. 273-274). (Issued 15th December, 1937.) On the Identity of the Butterfly known in Australia as Heteronympha philerope Boisd., 1832. By G. A. Waterhouse, D.Sec., B.H., F.R.E.S. .. Notes on Australian Mosquitoes (Diptera, Culicidae). Part iii. The Genus Aedomyia Theobald. By I. M. Mackerras, M.B., Ch.M., B.Sc. (Five Text-figures. ) The Petrology of the Hartley District. iv. The Altered Dolerite Dykes. By Germaine A. Joplin, B.Se., Ph.D. .. The Ecology of the Upper Williams River and Barrington Tops Districts. i. Introduction. By Lilian Fraser, D.Sc., and Joyce W. Vickery, M.Se. (Plate xiv, two Maps and ten Text-figures.) Notes on some Species occurring in the Upper Williams River and Barrington Tops Districts, with Descriptions of two new Species and two new Varieties. By Lilian Fraser, D.Sc., and Joyce W. Vickery, M.Se. (Two Text-figures. ) 126-146 147-174 175-180 181-208 209-216 Z84—293 iv CONTENTS. Pages. Notes on Australian Mosquitoes (Diptera, Culicidae). Part iv. The Genus Theobaldia, with Description of a new Species. By D. J. Lee, B.Sc. (Nine Text-figures.) 294-298 Notes on Australian Orchids. iii. A Review of the Genus Cymbidium in Australia. ii. By the Rev. H. M. R. Rupp, B.A. (Three Text- figures.) 299-302 The Occurrence of Graptolites near Yass, New South Wales. By Kathleen Sherrard, M.Sc., and R. A. Keble, F.G.S. (Plate xv and twenty-five Text-figures. ) 303-314 The Ecology of the Central Coastal Area of New South Wales. i. The Environment and General Features of the Vegetation. By Ilma M. Pidgeon, M.Sc., Linnean Macleay Fellow of the Soeiety in Botany. (Plate xvi-xvii and six Text-figures.) 315-340 The Carboniferous Sequence in the Werrie Basin. By S. Warren Carey, M.Se. (With Palaeontological Notes by Ida A. Brown, D.Sc.). (Plate xvili and five Text-figures.) 341-376 A Note on the Ascigerous Stage of Claviceps Paspali S. & H. in Australia. By W. L. Waterhouse, D.Se.Agr. .. 377 List of New Genera and Subgenera 379 List of Plates 380 Abstractwot #Proceedimess:).) \ ih) 7 Dien: Sis seas dnote te. ad ete oy ene XXXVil—xlv Donations and Exchanges Beene eerie Ree ee ae) Lota eos wan 3 ot | Shall TASC OE AMEND CLS in MMe at eee 2s, Rem seul eeu eta Mae ee te am area am Vale eL > Dox Index Shoe NO fo So, HR Ah ROE LR Rae ee eae A ay aT oe lxiii-Ixxiv CORRIGENDA. (Volume Ixii.) Page ix, line 14, for Fuviatile read Fluviatile Page xviii, line 25, for determinaitons read determinations Page 19, line 10 from bottom of page, for fulvithorar read fulvicoxa Page 155, line 6 trom bottom of page, for brimblecombei read brimblecombi Page 167, line 6, for brimblecombei read brimblecombi Page 168, line 2, for brimblecombei read brimblecombi ANNUAL GENERAL MEETING. WEDNESDAY, 31st Marcu, 1937. The Sixty-second Annual General Meeting was held in the Society’s Rooms, Science House, Gloucester Street, Sydney, on Wednesday, 31st March, 1937. Mr. C. A. Sussmilch, F.G.S., President, in the Chair. The minutes of the preceeding Annual General Meeting (25th March, 1936) were read and confirmed. PRESIDENTIAL ADDRESS. Following a well-established practice, I will devote the first part of my address to a brief review of the Society’s affairs during the past twelve months. The concluding part of Volume 1xi of the Society’s ProcrEDINGS was issued in December. The complete volume (360 plus Ixxxiii pages, seventeen plates and 196 text-figures) contains twenty-five papers and, in addition, the memorial accounts of Charles Hedley and Tannatt William Hdgeworth David. Exchanges from scientific societies and institutions totalled 2,156 for the session, aS compared with 1,703, 1,795 and 1,865 for the three preceding years. During the past year the following institutions have been added to the exchange list: Centre National de Recherches agronomiques, Versailles; Lingnan Science Journal, Canton; Société Royale Entomologique d’Egypte, Cairo; Station biologique de Roscoff, Paris; and Takeuchi Entomological Laboratory, Tokyo. Since the last Annual Meeting the names of thirteen members have been added to the list, three members have been lost by death, three have resigned, and the names of four have been removed on account of arrears of subscription. ARTHUR HENRY SHAKESPEARE Lucas, who died at Albury, N.S.W., on 10th June, 1936, was born at Stratford-on-Avon, England, on 7th May, 1858. The son of Rev. Samuel Lucas, F.G.S., a Methodist minister, with a sound knowledge of geology, he grew up in a scientific atmosphere. He was educated at New Kingswood Schooi, Bath, and at Oxford University, where he was an exhibitioner at Balliol College. He obtained the degrees of Master of Arts of Oxford and Bachelor of Science of London. After holding a mastership at the Leys School, Cambridge, under Dr. W. F. Moulton, he came to Melbourne in 1883, and taught Mathematics and Science to the senior classes at Wesley College and also lectured in Natural Science at the University Colleges, Trinity, Ormond and Queen’s. In 1893 he moved to Sydney as Headmaster of Newington College, from which post he retired in 1898 to become Mathematics and Science Master at the Sydney Grammar School, where later he became Headmaster. For a time he lectured in Physiography at the University of Sydney. He retired from school work in 1923, but later, for two years (1924— 1926), he accepted appointment as Professor of Mathematics at the University of Tasmania. While he was in Victoria he was actively interested in the Field Naturalists’ Club, being the first editor of the Victorian Naturalist, and President of the Club 1887-1889. A ii PRESIDENTIAL ADDRESS. He was President of this Society for the two years 1907-09, and was a member of Council from 1895 until his death, with the exception of the two years he spent in Tasmania. The greatest part of his published work is contained in numerous papers dealing with the Algae, on which he was a recognized authority. He was an indefatigable collector, and after his retirement he spent several months each year in collecting seaweeds from many parts of the Australian coast. He was Honorary Curator of Algae at the Sydney Botanic Gardens for many years. His own large collection of Australian Marine Algae, containing some 5,000 specimens, he bequeathed to the Commonwealth Government. Apart from his two Presidential Addresses, he contributed sixteen papers (two in conjunction with C. Frost) to our PRocEEDINGS during the years 1894-1936. Most of these papers were the results of his studies on Algae, but several of the earlier ones dealt with Australian Lizards. The range of his work is indicated by the fact that, apart from his work on Algae, he published an ‘Introduction to Botany” (in collaboration with Professor Dendy) and ‘The Animals of Australia” and “The Birds of Australia” (both in collaboration with D. le Souef). He was Local Honorary Secretary of the Australasian Association for the Advancement of Science for Victoria in 1892, and was President of the Geography Section at the Brisbane (1909) meeting. In addition to his scientific attainments he was an accomplished linguist, having a sound knowledge of several modern languages (including Spanish, Italian and Russian) as well as Latin and Greek. As a teacher he was lucid, thorough, and inspiring, and his amazing versatility is indicated by the fact, recorded by one of his biographers, that “in the days of the old Senior Hxamination his boys won medals in thirteen different subjects, and it was his personal teaching that produced so remarkable a result”. Notwithstanding his wide range of accom- plishments, he was a remarkably modest man, and thus he deserved far more public recognition than he ever got. Those who knew him, however, were able to appreciate his lovable disposition, his kindness and sympathy, and his charming modesty. Rosin JOHN TILLYARD was born on 31st January, 1881, at Norwich, England, and died in Goulburn District Hospital on 13th January, 1937, as a result of a motor accident while driving from Canberra to Sydney. His early education was at Dover College, from which he won scholarships to Oxford for classics and to Cambridge for mathematics. He chose the latter and proceeded to Queens’ College, Cambridge. He obtained his degree of Bachelor of Arts in mathematics in 1903, and in the following year read Oriental languages and theology, but rheumatism compelled him to leave England, and he accepted appointment as a master in science and mathematics at Sydney Grammar School. He graduated Master of Arts of Cambridge in 1907. In 1913 he was admitted as a Research Student in the University of Sydney and awarded a Government Science Research Scholarship, which he held for two years, graduating Bachelor of Science in 1914. He obtained his Doctorate in Science at Sydney in 1918. He held a Linnean Macleay Fellow- ship in Zoology from 1915 to 1920, in which year he was appointed Chief of the Biological Department of the newly-established Cawthron Institute at Nelson, N.Z. During his tenure of the Macleay Fellowship he was granted leave of absence for a period in 1917 to act as Lecturer in Zoology at the University of Sydney. In 1926 he became Assistant-Director of the Cawthron Institute, and in 1928 returned to Australia as Chief of the Division of Economic Entomology of the Council for PRESIDENTIAL ADDRESS. lil Scientific and Industrial Research, from which he retired on account of ill-health in 1934. He had a brilliant career as an Entomologist, the results of his researches appearing in his two books “The Biology of Dragonflies” (1917) and ‘The Insects of Australia and New Zealand” (1926) and some two hundred papers in the journals of scientific societies. His early work was mostly on the Odonata, while during his term as a Linnean Macleay Fellow he worked on a wide variety of entomological problems, including wing venation and other characters of the Odonata, Australian Neuroptera, Australian Mecoptera, the Panorpoid Complex, and fossil insects of Permian and Triassic age in Queensland and New South Wales. In New Zealand, and subsequently at Canberra, he necessarily devoted a large portion of his time to the measures necessary to combat a number of insect pests, but, with his amazing energy, he continued his own work on various insect groups, particularly those found abundantly as fossils. For several years he collaborated with the late Sir Edgeworth David in investigating fossil remains, from rocks of Pre-Cambrian age in South Australia, which they believed to be the remains of primitive crustaceans. Some of their results have been published as a Memoir on Fossils of the late Pre-Cambrian from the Adelaide Series. His scientific publications brought to him many honours: he was elected Fellow of the Royal Society, London (1925), Fellow of the New Zealand Institute (1924), Corresponding Member of the Zoological Society, London (1921). Cambridge University conferred on him its Doctorate in Science (1921), and Queens’ College elected him an honorary Fellow. He was awarded the Crisp Medal (1917) by the Linnean Society of London, the Trueman-Wood Medal (1926) by the Royal Society of Arts and Science, London; the R. M. Johnston Memorial Medal (1929) by the Royal Society of Tasmania; the Clarke Memorial Medal (1931) by the Royal Society of New South Wales; and the Mueller Medal (1935) by the Australian and New Zealand Association for the Advancement of Science. He was president of the Zoology Section of the New Zealand Science Congress at Dunedin in 1924, and of the Zoology Section of the Australian and New Zealand Association for the Advancement of Science at Brisbane in 1930. He had been a member of this Society since 1904, and contributed eighty-nine papers to the PROCEEDINGS during the years 1905-1935. WALTER WILSON FRocGATT, who died at Croydon on 18th March, 1937, was born at Melbourne, 13th June, 1858. The son of George W. Froggatt, a mining engineer, he was educated at the Corporate High School, Bendigo, Victoria. Both his parents were keen nature lovers, and so he early developed his love of natural history. On account of ill-health he spent some years on the Jand in north-west Victoria, and droving in western New South Wales and Queensland. In Queens- land he also spent some time on various goldfields—Mt. Brown, Cairns, Herberton and Flinders. During this time in the country he developed his interest in the study of insects, which he collected widely. Through this he met Baron F. von Mueller, then Government Botanist of Victoria, and, partly as a result of the Baron’s good offices, he was appointed entomologist and assistant zoologist to the scientific exploring expedition to New Guinea despatched by the Royal Geographical Society of New South Wales. After his return he was engaged by Sir William Macleay, as collector for his private museum, from 1886 to 1888. During this period he collected in northern Queensland, and also in north-western Australia, in the back country of the Kimberleys. From 1889 to 1896 he was assistant and collector at the Sydney Technological Museum under the late J. H. Maiden, and in 1896 he was appointed Government Entomologist, which position he occupied iv PRESIDENTIAL ADDRESS. until he retired in 1923. After his retirement he was special Forest Entomologist to the Forestry Commission of New South Wales from 1923 to 1927. For ten years after the institution of the Faculty of Agriculture, he lectured in Entomology at the University of Sydney. He had been a member of this Society since 1886, was President 1911-1913, and a member of Council from 1898 till his death. He contributed to the PROCEEDINGS some forty-nine papers (one in conjunction with F. W. Goding) in addition to his two Presidential Addresses. He took the greatest interest in all naturalist societies, and was always an active member of the Naturalists’ Society of New South Wales, of which he was President for some years; he was a member of the Council of the Royal Zoological Society of New South Wales, which elected him a Fellow in 1931. He was also a member and one of the founders of the Wattle League, Wild Life Preservation Society, and the Gould League of Bird Lovers. He was a member of the Australian National Research Council, 1921-1932, and a Fellow of the Linnean Society of London. His scientific writings covered a wide range in entomology, and comprised many departmental reports in addition to his contributions to the publications of scientific societies. He was also the author of “Australian Insects” (1907), “Some Useful Australian Birds” (1921), “Forest Insects of Australia” (1923), and ‘‘Forest Insects and Timber Borers” (1927), as well as handbooks on Insects (1933) and Spiders (1935). In the course of his work he was sent on a world tour to study insect pests in general and fruit pests in particular for the Governments of South Australia, Victoria, New South Wales and Queensland; in 1909 he visited the Solomon Islands at the invitation of Levers’ Pacific Plantations, and in 1913 went to the New Hebrides at the request of the French Planters’ Association. During the past year the David Memorial Fund was closed, the result being that a sum of £2,079 was handed to the Senate of the University of Sydney, which has decided that the interest shall be used for the establishment of a post-graduate travelling scholarship for Geology to be known as the Edgeworth David Scholar- ship. The Senate of the University also decided that in future the Chair of Geology shall be called the “Hdgeworth David Chair of Geology”. The Council of the Society also gave its support to a proposal to obtain a portrait of the late Sir Edgeworth David, to be hung in Science House. The Committee appointed for the purpose of carrying out this project received sufficient subscriptions from members of the societies associated in Science House, and has commissioned Mr. Norman Carter to paint the portrait. In an effort to expedite the appointment by the Government of Trustees for the Sir Joseph Banks Memorial Fund, the Council arranged for a deputation to wait on the Acting-Premier in May last year. The deputation was received by Major Shand (in the absence of the Acting-Premier), and received a sympathetic hearing, but I regret to say that the Government has not yet brought forward the necessary formal legislation to enable the trust to be appointed. The proclamation by which numerous wild flowers are afforded protection was renewed for a further period of a year from 1st July, 1936. With the object of ensuring that type material of species from Australia and the Mandated Territories should be available for scientific workers in Australia, your Council asked the Commonwealth Government to extend the principle approved by it in 1923 for Australia, that the types of new species and duplicates of rare species collected by expeditions should be deposited in an Australian PRESIDENTIAL ADDRESS. Vv Museum, to the Mandated Territories. The Society was notified in September, 1936, that “in future special permits to collect in New Guinea will contain a condition that types of new species and duplicates of any rare species obtained must be donated to the Administration of the Territory”, and in December, 1936, “That the Lieutenant-Governor of Papua proposes to declare all specimens of flora and fauna to be prohibited exports except with the consent of the Treasurer, such consent to be given after the collector has furnished an undertaking that he has not collected any new or rare specimens or that he is sending or has sent certain specimens to Canberra.” The vacancy in the Council resulting from the death of Mr. A. H. §. Lucas was filled by the election of Mr. R. H. Anderson, B.Sc.Agr. The year’s work of the Society’s research staff may be summarized thus: Mr. H. L. Jensen, Macleay Bacteriologist to the Society, continued investiga- tions into nitrogen-fixation in wheat soils. In twenty-six soils to which no extra source of energy was added, completely negative results were obtained. In soils to which glucose or straw had been added, to test the potential N-fixing capacity, only two out of sixteen soils gave a moderate N-fixation under aerobic conditions with the addition of glucose; the addition of straw did not in any experiment result in a measurable gain of nitrogen. Experiments with twelve wheat soils exposed to daylight to test the possible importance of algae gave negative results, but one other soil showed a significant gain of nitrogen. No aerobic organism other than Azotobacter chroococcum (the only species of Azotobacter so far encountered) has yet been found capable of fixing elementary nitrogen. Pure cultures of this species were found capable of assimilating 12-15 mgm. of elementary nitrogen per gram of glucose consumed. Since the assimilation of 10 mgm. N per gram of glucose is considered a normal amount, the lack of N-fixation in the wheat soils cannot be ascribed to inefficiency of the Azotobacter strains. Unfavourable soil reaction (acid) seems in most cases responsible for the absence of N-fixation. Nitrification experiments with thirty soils have shown a close correlation between total N-content and nitrate production. The conclusion is indicated that it cannot be assumed that the processes of non-symbiotic nitrogen fixation will suffice to compensate the wheat lands for the gradual removal of nitrogen by continued cultivation of wheat, particularly if stubble-burning is regularly practised. Miss Lilian Fraser, Linnean Macleay Fellow of the Society in Botany, continued her work on the Sooty Moulds of New South Wales, completing two papers for publication and preparing a thesis containing results of all her work on this subject. In this thesis she attempts to show (a) that there is a distribution and typical assemblage of sooty-mould fungi which is dependent directly on the ability of the individual species to resist heat and desiccation, and (0) to explain the reason for the predominance of members of the Capnodiaceae and certain other species in sooty-mould colonies, their absence from other habitats occupied by decay-causing fungi, and the absence or relative unimportance of decay-causing fungi in sooty-mould colonies. One paper, “Notes on the Occurrence of the Trichopeltaceae and Atichiaceae in New South Wales” appeared in the ProcEEDINGS for 1936, and another, “The Distribution of Sooty-mould Fungi and its Relation to certain Aspects of their Physiology’, is complete and will appear in the PROCEEDINGS for 1937. With the object of finding reasons for the composition of sooty-mould colonies and the absence of common saprophytes, a series of experi- ments was carried out to ascertain the effect in culture of the growth of individual species upon the growth of other species. It was found that, whereas true sooty- vi PRESIDENTIAL ADDRESS. mould fungi do not retard each other’s growth to any great extent in culture, the same species do retard the growth of Penicillium. This may in part explain the ability of a large number of sooty-mould species to grow together in the one colony, and also the absence of the common saprophytes. Studies of the behaviour of gas bubbles in living sooty-mould cells have shown that the bubbles are within the protoplast and controlled by its properties. The composition of the gas under various conditions of desiccation has been determined, but further work is necessary on this. It has been shown that gas must be able to diffuse slowly across the dry cell-wall, that a certain amount of gas can accumulate in a cell which has never had access to air, and that the cell-wall can absorb moisture from a nearly saturated atmosphere in sufficient quantity to allow for growth of the hyphae. This latter property is no doubt responsible for the ability of sooty-mould fungi to colonize the habitats in which they are found. An ecological survey of the rain forests and Eucalypt forests of the Upper Williams River and Barrington Tops Plateau which was undertaken in collaboration with Joyce Vickery, M.Sc., of the National Herbarium, Botanic Gardens, is being completed. Dr. I. V. Newman, Linnean Macleay Fellow of the Society in Botany, continued genetical work by an examination of anthesis of Acacia discolor and by carrying out experiments with pollination to find the time of ripening of the stigma and the periods between pollinaticn, germination of pollen, and fertilization. This work was incomplete at the time of his resignation from the Fellowship. A germination test was made with seeds of Acacia Baileyana collected from two localities near Cootamundra. The test gives no indication of segregation of widely divergent foliar characters, the variations shown being such as might be expected from open pollination in a wild species (without crossing). The recording of this test was not completed at the time of resignation. The investigation of polyspermy was retarded by considerable technical difficulties in handling and sectioning, at the great thinness necessary, the carpels which are such small, hard objects. Dr. Newman hopes to complete these investigations as opportunity offers. Mr. R. N. Robertson, Linnean Macleay Fellow in Botany, continued his investigations of the gas of the intercellular spaces of leaves and made progress on the problem of daylight movement of stomata and the changes of gas composition with change in external factors. Mr. Robertson was awarded a Science Scholarship by the Royal Commissioners for the Exhibition of 1851, and resigned his Fellowship as from 31st July, 1936. He proceeded to Cambridge, where he will continue this work on plant physiology, in which we wish him every SUCCESS. Miss Elizabeth Pope, Linnean Macleay Fellow of the Socicty in Zoology, has carried out dissections of the Port Jackson Shark, and has completed studies of the external features and the exoskeleton. She has also made a study of the anatomy of the digestive system and discovered the presence of 9% spiral folds in the large intestine, and not 8% turns as stated by T. J. Parker. The muscle system and the nervous system have been studied and dissections of the blood vessels and skeleton are in progress. Miss Pope has carried out a preliminary survey of the Ecology of a certain area at Long Reef. Some definite idea of the animal communities has already been obtained and now it should be possible to work out some of their inter-relations. During the coming year Miss Pope proposes to continue the investigations on the Port Jackson Shark, and the ecological problems in connection with the work at Long Reef. Six applications for Linnean Macleay Fellowships were received in response to the Council’s invitation of 30th September, 1936. I have pleasure in reminding PRESIDENTIAL ADDRESS. vii you that the Council reappointed Dr. I. V. Newman and Miss Elizabeth C. Pope to Fellowships in Botany and Zoology respectively for one year from 1st March, 1937, and appointed Mr. Consett Davis, B.Sc., and Mr. A. H. Voisey, M.Sc., to Fellowships in Zoology and Geology respectively for one year from 1st March, 1937. Shortly after the announcement of these appointments, Dr. I. V. Newman was appointed Lecturer in Botany at Victoria University College, Wellington, N.Z., and resigned his Fellowship as from 30th November, 1936. The Council, there- upon, decided to invite applications from qualified candidates to fill the vacancy caused by Dr. Newman’s resignation. Three applications were received, and I have pleasure in announcing the appointment of Miss Ilma M. Pidgeon, B.Sc., to a Fellowship in Botany for the year 1937-88. We may wish all four Fellows a successful year’s work. Mr. Consett Davis, after a distinguished course, graduated in Science with First Class Honours in Entomology (1934) and Botany (1935). During his Honours course he carried out research on the Australian Embioptera and on the Plant Ecology of the Bulli District, part of the results of which have already appeared in three papers in the Procrrpines for 1936. For his work as a Linnean Macleay Fellow he proposes to continue the work already commenced on the Embioptera, and also to work on the respiration of the Dryopidae, the wing venation of the Coleoptera and the anatomy of certain littoral Mollusca. As opportunity arises he proposes also to study the general ecology of the Five Islands. Mr. A. H. Voisey gained First Class Honours and the University Medal in Heonomic Geology on graduation in Science in 1933 and also divided the John Coutts Scholarship. During his University course and subsequently, Mr. Voisey carried out a considerable amount of field investigation of the Upper Palaeozoic rocks of north-eastern New South Wales, and he has thrown much light on problems of the Carboniferous and Permian Systems which were hitherto obscure. Several papers embodying results of this work have already been published by our Society and by the Royal Societies of New South Wales and Queensland, resulting in Mr. Voisey obtaining the degree of M.Sc., from the University of Sydney in 1936. Mr. Voisey proposes to continue this work with the object of elucidating the structures in the Permian System and ultimately obtaining strati- graphical sequences which will permit of satisfactory correlation with the succes- sions in other parts of Eastern Australia and perhaps with extra-Australian successions. Miss Ilma M. Pidgeon graduated in Science in the University of Sydney in 1936 with First Class Honours in Botany and was awarded a Government Science Research Scholarship in 1936. During her final year and subsequently she carried out work on the Ecology of the Hawkesbury Sandstone and Wianamatta Shale Formations of the Sydney District, and has completed one paper entitled ‘Plant Succession on the Hawkesbury Sandstone, Sydney District’, which has been submitted for publication. A second paper on “The Hucalyptus Forests of the Hawkesbury Sandstone” is approaching completion. She has also been working on the Eucalyptus Forest Associations on the Wianamatta Shales, and the nature and distribution of the brush forests. As a Fellow she proposed to extend the work on the Hucalyptus Forest Associations of sandstone and shale and to complete other aspects of the ecological work arising out of these studies. viii PRESIDENTIAL ADDRESS. THE GEOLOGICAL HISTORY OF THE CAINOZOIC HRA IN NEW SOUTH WALES. Introduction. For the scientific part of my address this evening I have chosen as my subject a review of the geological history of the Cainozoic Hra in New South Wales. A study of the published work on this subject shows that widely divergent views have been expressed by the various writers, and it seems desirable, therefore, to review the existing knowledge for the purpose of attempting to provide a more satisfactory account of our Cainozoic history. The absence of fossiliferous marine strata of Cainozoic age in New South Wales, except for a small area in the south-west corner of the State, together with the unsatisfactory evidence of geological age afforded by our Cainozoic fossil plants, makes the accurate dating of such Cainozoic formations as do occur practically impossible. In Victoria, however, marine fossiliferous strata of Cainozoic age are widespread, and the association of these with other Cainozoic formations, such as the volcanic rocks and their associated deep-leads, gives more definite evidence of age than can be found in New South Wales; the writer has found it necessary, therefore, to make an attempt to correlate the Cainozoic formations of the two States in the hope that such a correlation would provide evidence lacking in New South Wales. With this object in view the published literature has been studied, certain areas in Victoria have been personally visited and, in addition, a number of features have been discussed with some Victorian colleagues who have cordially assisted in every way; in this connection I am particularly indebted to Messrs. W. Baragwanath, F. A. Singleton and R. A. Keble. Previous Observers. C. §S. Wilkinson (1882) and EH. F. Pittman (1908) published very brief summaries of the Cainozoic Hra in New South Wales, but the first real attempt to interpret the history of this era was that made by H. C. Andrews. He was the first geologist in Australia to study the origin of the existing land forms and use that study in the interpretation of its Tertiary and Post-Tertiary history; in making these physiographical studies he also, of course, made use of such direct geological evidence as was available. The result of his work was published in 1910 under the title of the Geographical Unity of Eastern Australia in late Tertiary and Post-Tertiary Time (Andrews, 1910). His methods and conclusions met with much criticism at the time and even to-day there are some Australian geologists who disagree with some of his most important conclusions, but in the writer’s opinion his interpretation of our Cainozoic history has proved to be thoroughly sound and, apart from some very minor modifications, the succession of events postulated by him and the geological ages assigned to them have proved to be correct. In 1911 the present writer in his book on the Geology of New South Wales (Sussmilch, 1911) gave a fairly detailed description of the Tertiary formation of New South Wales, the chronological succession adopted being based on Andrews’ published work of the previous year; and in 1925 (Sussmilch, 1925) published a brief description of the topographical features of New South Wales, which included a table showing the more important events of the Cainozoic. Era arranged in chronological order. T. W. E. David (1914), in a summary of the geology of Australia, included a brief chapter on the Tertiary Period, and in his Explanatory Notes to accompany a new Geological Map of Australia (David, 1932) included a fairly detailed PRESIDENTIAL ADDRESS. ix summary of the Cainozoic Era; in this account his dating of some of the formations differs somewhat widely from that of previous writers. R. Henry Walcott (1920) contributed a very useful paper dealing with the evidence of age of some Australian gold-drifts, in which he reviews the whole of the existing literature relating to this subject for both Victoria and New South Wales; he gives full lists of the fossil plants and a very useful list of references. F. Chapman and F. A. Singleton (1925) published a very useful summary of the Tertiary Deposits of Australia, which deals with both the marine and non- marine formations and includes a very complete bibliography. A study of the above and other publications on this subject shows that wide differences of opinion exist, not only as to the order of succession of events which took place during the Cainozoic Hra, but also as to their actual geological age. The interpretation of our Cainozoic history depends upon the following evidences: (1). The Fuviatile Deposits; (2). The Volcanic Rocks; (3). The Marine Formations; (4). The Existing Land-forms. The Fluviatile Deposits of New South Wales. At many places in New South Wales old river-channels of Tertiary age are found partly filled with deposits of alluvium consisting of river gravels covered by layers of sand and clay and, in some cases, beds of lignite. The bottom gravels of many of these old river-channels contain alluvial gold, tinstone, gem-stones, etc., and are known to the alluvial miner as “deep-leads’. These fluviatile deposits are usually well stratified and at most localities contain fossil fruits or fossil leaves or, in some cases, both. At nearly all localities the alluvial deposits are covered by contemporaneous flows of basalt and, in some instances, basalt flows are actually interstratified with the fluviatile deposits. Similar deposits also occur in Queens- land and in Victoria. A brief description of the best known of these deposits is desirable and all of those selected for this purpose in this State have been visited by the writer. (a) The Emmaville (Vegetable Creek) Leads—These occur on the New England Tableland in northern New South Wales, not very far from the Queens- land border; they were first described in detail by T. W. E. David (1887), and further descriptions were given by J. E. Carne (1911); as they have been described in full detail they may be taken as a type of our Tertiary fluviatile deposits and described more fully than those which follow. The Tableland at Hmmaville has an altitude of about 2,900 feet and consists dominantly of granites and quartz- porphyries, with which are associated subordinate areas of highly folded Upper Palaeozoic strata; the surface of the tableiand is a peneplain cut out of these rocks. Rising above the general level of the tableland is a monadnock called Mt. Battery, 3,970 feet in altitude, a residual of the older tableland, out of which the peneplain was developed. The fluviatile deposits and their associated lava flows lie in shallow valleys about 300 feet deep incised in the surface of the tableland; a section of these deposits showing their mode of occurrence is given in Figure 1. Two basalt-covered leads, the Vegetable Creek Lead and the Graveyard Lead, are shown in this section. At the right of the section is shown the valley of the Severn River, cut out during the present cycle of erosion subsequent to the uplift of the tableland; it will be seen that the development of this present-day valley has partly cut away one of the valley walls of the old lead channel. B x PRESIDENTIAL ADDRESS. In describing these leads, David has shown that the fluviatile deposits under- lying the basalts range from 25 feet to 79 feet in thickness, while the basalts range up to 200 feet in thickness; he has also shown that there are two separate flows of basalt, with evidence of an erosion interval between them; he states that: “In Skinner’s Rock shaft there is conclusive proof of at least two flows of basalt belonging to different periods. This shaft was sunk through 100 feet of soft basalt on to beds of fine sand and clay 25 feet thick and the latter was found to rest upon the waterworn surface of hard basalt.” David considered that the erosion interval between the two basalt-flows represented a long period of time, and he placed the main auriferous lead with its basalt cover in the Hocene Period, while the overlying 25 feet of alluvium with its covering flow of basalt was considered to be as young as Miocene or even Pliocene. In his latest writing on this subject (David, 1932) he places the older deposits in the Oligocene and the newer in (?) the Miocene Period. A study of David’s sections will show that, even allowing for the erosion interval between the two basalt-flows, there is no valid reason why the whole series could not have been deposited not only in one geological period but even in part of a period. J. EH. Carne was evidently of this opinion because, in the geological map which accompanied his report on the Emmaville tinfield in 1911, all of these deposits are included in the Hocene Period. A large number of fossil leaves have been obtained from these fluviatile deposits and these have been described by Baron von Httingshausen (1888); he described 60 different species from the Old Rose Valley lead and 35 species from Witherden’s Tunnel; both of these localities are from the same horizon, i.e., under the lower basalt-flow, yet only one of the 95 species described is common to the two localities. Sixteen species were described from Fox and Partridge’s claim, obtained from a shallow lead above the lower basalt-flow, none of which is listed from the localities previously mentioned. However, from collections of fossil leaves obtained from one and the same lead at Newstead, near Hlsmore, about 20 miles from Hmmaville, 30 species have been described by EHEttingshausen and others. Twenty-one of these species occur in Httingshausen’s lists from Hmmaville, eight from the Old Rose Valley lead, nine from Witherden’s Tunnel, and four from Fox and Partridge’s. There seems no doubt, therefore, that the fossil plants obtained from Emmaville all belong to one and the same fossil flora. Ettingshausen was of opinion that this flora deviates strikingly from the present-day flora and assigned a Lower Eocene age to it; these opinions will be discussed in a later section. The history revealed by the Emmaville leads and their associated land-forms indicates the following stages of development: Development of a peneplain at sea-level; Elevation of this peneplain by about 300 feet; Development of valleys to a depth of 300 feet; The partial filling of these valleys with the fluviatile deposits and lava flows; Continuation of valley development with the production of a system of shallow mature valleys alike in the basalts and older rocks; 6. An uplift of about 2,900 feet to produce the existing tablelands; 7. Cutting out of the valleys of the present cycle of erosion. (b) The Gulgong Leads.—These occur near the village of Gulgong, on a table- land with an altitude of about 1,600 feet; the surface of this tableland is a Lag) RO ol PRESIDENTIAL ADDRESS. xi peneplain cut out of a series of highly-folded Palaeozoic strata and their associated plutonic intrusions. The leads occur in shallow valleys incised in the surface of this peneplain and are, for the most part, covered by basalt-flows; the fluviatile deposits range from a few feet up to 200 feet in thickness, while the basalts range up to 130 feet thick. Fossil fruits were obtained from the Home Rule Lead at a depth of 126 feet; these were described by von Mueller (1876) and referred to the Pliocene Period. C. S. Wilkinson (1878) reported that some bones of fossil vertebrates had been obtained from the Magpie Lead at a depth of about 40 feet, and included remains of Diprotodon, Halmaturus and Macropus. SECTION AT EMMAVILLE (T.W.e. DAVID) VEGETABLE CREEK LEAD GRAVEYARD LEAD Old Timber. Thin Veins Thin Veins Shaft ¢7ft. Ue HEE Gra eg ard of Tin Stone ———s x. S g Sdivoni TAN ZL =SSSAN DSTONE~ © 20 40 60 80 100 Chains ° 200 400 600 800 jooo Feet Horizontal Scale Vertical Scale SECTION ACROSS FOREST REEFS GOLD FIELD (rv.t.srown) ( Basalt PTT ES <9 ip sit DAS) A A p a i) SD RSS LLP ZL SILURIAN 7S! 9 LIME STONE eis wane 2 to) 40 80 20 Feet ° 1000 2000 3000 Feet Horizontal Scale Vertical Scale = SECTION AT WINGELLO (J.B. JAQUET ) a pI Forest Reefs Lumpy Lead pBecalls overlying fluviatile deposits ( 1 2 Oatum 2000ft above sea level 3 ° 8 16 24 Chains ° 200 400 600 Feet Horizontal Scale Vertical Scale (c) The Forest Reefs Leads.—These occur on the Central Tableland of New South Wales not many miles from the town of Orange, and have been described by H. Y. L. Brown (1882); a section showing their occurrence is given in Figure 2; it will be seen from this that the surface of the tableland here is a peneplain cut out of highly-folded Lower Palaeozoic strata intruded by basic granites and porphyries; incised in its surface are a number of Tertiary stream channels now partly filled with fluviatile deposits covered by basalt lava flows, the latter ranging up to 200 feet in thickness. The alluvial deposits have yielded fossil fruits similar to those obtained at Gulgong. (d) The Warrumbungle Mt. Leaf-Beds.—At the Warrumbungle Mountains, near Coonabarabran, thin beds of sand and clay have been found interstratified with trachyte lava flows. The extinct volcanoes, of which these lava flows form a part, stand upon a tableland about 2,000 feet in altitude. Fossil leaves have been § (Hawkesbury Sandstone yee ey Sat) PRESIDENTIAL ADDRESS. obtained from the shale beds and described by Henry Deane (1907), who states that “the leaves are somewhat similar in character to many of those described by Ettingshausen from the deposits from Dalton and Vegetable Creek’. (e) The Wingello Leaf-Beds—These occur near the village of Wingello, on the Mittagong-Marulan Tableland at an altitude of 2,200—2,300 feet, the surface of which at this locality consists of Triassic sandstones (Hawkesbury Sandstones), and have been described by J. B. Jaquet (1901). The fluviatile deposits consist of ferruginous shales, sandy claystones and coarse-grained sands, deposited in shallow valleys, about 300 feet deep, cut into the Hawkesbury Sandstones, as shown in Figure 3. They are covered in part by basalt-flows and have yielded fossil leaves which have been described by Henry Deane and obviously belong to the same fossil flora as that obtained from Dalton and Emmaville. (f) The Leaf-Beds at Dalton.—These occur at the village of Dalton, about 7 miles from the township of Gunning. The country here consists of a tableland with a general altitude of about 1,900 feet. The surface of the tableland is a peneplain cut out of a series of highly-folded Silurian strata intruded by granite. Traversing the surface of the tableland is a series of mature valleys about 300 to 400 feet deep and with aggraded floors. Typical examples of these mature valleys are given in Plate A. At Dalton deposits of cemented siliceous gravels and .; sands occur some 50 feet above the floor of the valley and these contain abundant fossil leaves. These have been described by Ettingshausen (1888) (27 species) and referred by him to the Eocene Period. (9g) The Kiandra Leads.—These occur near the village of Kiandra on the Southern Tableland and have been described in detail by E. C. Andrews (1901). The tableland here has an altitude of over 5,000 feet and its surface is a peneplain cut out of highly-folded Lower Palaeozoic sediments (tuffs and slates) with granite and syenite intrusions; above the tableland surface rise monadnocks, such as Governor’s Hill (5,723 feet), residuals of the older tableland out of which the peneplain has been eroded. The leads lie in shallow valleys cut into the peneplain surface and consist of river gravels covered by layers of sand, clay and lignite ranging up to 150 feet in thickness, the whole covered by a flow of basalt. The main lead has been traced for a distance of about 20 miles and lies in a rock channel about 10 chains in width. Present-day streams have cut their channels on either side and well below the base of the lead, so that it now occurs on top of a ridge; the upper surface of the basalt is, however, somewhat below the general level of the tableland. No fossil leaves or fruits have been described from this lead. Since its uplift, the Kiandra tableland has been deeply dissected; at the fifteen-mile the Tumut River is entrenched in a gorge 2,500 feet deep, and where this stream joins the Yarrangobilly River the gorge is 3,600 feet deep. From the descriptions given it will be seen that all of these fluviatile deposits, with their associated basalts, are similar in their geological characters and in their physiographical setting; they differ only in the altitude of the tableland upon which they rest; they would therefore appear to be all of the same geological age. The Fluviatile Deposits of Victoria. It is proposed in this section to describe briefly some of the Tertiary fluviatile deposits of Victoria for the purpose of showing their close relationship to those of New South Wales as well as their relationships to one another. PRESIDENTIAL ADDRESS. Xili I. Hastern Victoria. (a) The Leads of the Bogong and Dargo High Plains (Victoria).—These occur in Eastern Victoria not many miles'from the New South Wales border, and have been described by Stanley Hunter (1909). Their physiographic setting is identical with that of the various leads described from New South Wales; the tableland on which they occur has a general altitude of about 6,000 feet, but appears to have a definite southerly tilt. The surface of this tableland is a peneplain cut out of Lower Palaeozoic strata, and lying in shallow valleys cut into this peneplain surface are fluviatile deposits covered by sheets of basalt. The higher points of the tableland, such as Mt. Feathertop (6,303 feet), Mt. Fainter (6,160 feet), Mt. Hotham (6,101 feet) and Mt. Cope (6,015 feet) all occur in the older rocks. The basalts to-day cover a series of disconnected areas on or near the main divide, and these areas are so level as compared with the rugged topography which surrounds them that the more extensive areas are known as plains such as the Bogong High Plains, the Baw Baw Plains and the Dargo High Plains. The basalts reach an altitude of 5,935 feet at the northern end of the area (Bogong High Plains), the altitude decreasing to 4,400 feet at the south end of the Dargo High SECTION ACROSS DARGO HIGH PLAIN (S. HUNTER) -Basalts overlying fluviatile deposits W. / / ry dts Hee} fae / fe / iff ( i y, v7. eff : J y / a Oh Te WE of U, fi ji. y, vi y Vi ; j yf IG WA y/ y / / y, , Yi fe / ORDOVICIAN SHALES & SANDSTONES ee tox Datum 2500Ft above sea Jeve/ 4 fo} 3000 6000 sooo Feet ° 1000 2000 3000 Feet eS! Horizontal Scale Vertical Scale SECTION ACROSS GOLDEN POINT LEAD, BALLARAT (H. BARAGWANATH) Basalts overlying rfluviatile deposits Golden Point Lead Yarrowee Ck FEES he TLOCEP Pec re eer Reon Tr Pa Loot 7 COO Tr = / !]] ORDOVICIAN SHALES ETS 5 ° 16 32 48 Chains Natural Scale BS es A Ads Kt 6 Oy LENS) INS CZ AT B F SD we S S ine 47 Awe \N F F 8 B N c P j ANS ATION Atti S at LTR C NW ) D SST NACLANIE SS a“ SEDIMENTARY. ROCKS TESS SUPT eG eG ISS VSS SPOUSES ES N TSS NM SD Sr Fe Lbs TS es West ~S ISS \ OS Xo NT SRSA A. Residuals. B, Younger Peneplain. C,Upland Valley. 0D, Present day Valley. E, Monadnock Basalts. fF, Plateau Basalts. Fig. 6.—Ideal section across tableland, showing main physiographical features. Xiv PRESIDENTIAL ADDRESS. Plains, a decrease in altitude of 1,500 feet in a distance of about 22 miles, suggesting that the tableland was tilted during its uplift. A study of Stanley B. Hunter’s sections (1909) on the State Geological Map of the Dargo High Plains (see Fig. 4) shows that the fluviatile deposits with their basalt cover are similar in all respects to those occurring in New South Wales, while the tableland on which they occur has suffered a similar deep dissection to that of the Kiandra Tableland of New South Wales. Fossil leaves have been obtained from these deposits and were described by F. McCoy (1876) who considered them to be of Lower Miocene age, and it is upon this evidence apparently that these deposits have since been referred by most Victorian geologists to the Miocene Period and the basalts referred to the Older Basalt Series of Victoria. (bo) Aberfeldy.—The geology and physiography of this area have been fully described by H. Baragwanath (1925); according to his description there is in this district a much dissected tableland ranging from 3,260 to 3,500 feet in altitude, but with a definite tilt towards the south; the one-time surface of the tableland is a peneplain cut out of Ordovician strata. Rising above the level of this peneplain are two residuals, Mt. Baw Baw (5,130 ft.) and Mt. Useful (4,765 ft.); these are remnants of the older tableland out of which the peneplain was eroded. The two main rivers of the district are the Aberfeldy and Thompson Rivers, and the divide between these two streams is capped at intervals along a distance of about 20 miles by patches of basalt, under which in places occur river gravels. No fossil plants have been described for these deposits. The physio- graphic setting here is very similar to that of the Dargo High Plains. (c) The Tangil Lead.—This has been described by R. A. Murray (1880) and eccurs on the divide between the Tangil and Latrobe Rivers. The fluviatile deposits here are about 40 feet thick and are capped with basalt, and from the lead fossil fruits (Murray, 1887) have been obtained. These basalts were originally classed as Newer Basalts by R. Brough Smyth (1874) because some of the fossil fruits found were identical with those found in the Haddon Lead in the Ballarat District, but later S. Hunter (1909) referred them to the Older Basalts (Miocene) because he considered the physiographic setting of the Tangil lead to be similar to that of the Dargo High Plains. (ad) Tangil East and Narracan.—The geology of this region has been described in detail by H. Herman (1922), and from his description the following important features stand out: 1. The presence of a well-developed peneplain cut out of Silurian and Jurassic strata; 2. The deposition on this peneplain of the following Tertiary formations: firstly, fluviatile deposits consisting of quartz gravels, micaceous sands and beds of lignite, followed, secondly, by basaltic lava-flows ranging from 300 to 500 feet in thickness and, thirdly, deposited upon these basalts are fluviatile deposits (perhaps lacustrine in part) consisting of sands, clays and ferruginous conglomerates with a maximum thick- ness of 100 feet. Herman, following the general practice, referred the basalts to the Older Basalt Series of Miocene age and the underlying fluviatile deposits were considered to be of Miocene, Oligocene or Eocene age. At Narracan, in the southern part of the area, these fluviatile deposits have yielded fossil leaves which have been described by F. Chapman (1926), and his list of genera is included in Table IJ; this fossil flora was considered by him to be the same as that obtained from the PRESIDENTIAL ADDRESS. XV Dargo, Berwick, Bacchus Marsh and Pitfield localities. The fluviatile beds over- lying the basalts were doubtfully referred by Herman to the Pliocene period; they have yielded no fossils. In speaking of these latter beds Herman states: “These deposits are evidently of fluviatile and in part at least of lacustrine origin. They were laid upon the flattened surface following the filling of the (?) Miocene river valleys by the volcanic accumulations.” Herman’s sections show very clearly that the peneplain, with its covering of Tertiary deposits, was subsequently uplifted to form the existing tabieland ranging up to 1,200 feet in altitude and that the uplift was a differential one accompanied by faulting and the tilting of the faulted blocks. (e) Morweil—From the adjoining district of Morwell Herman (1922) has recorded the existence of a freshwater series consisting of sands, clays and lignites with a thickness of upwards of 1,000 feet; of this thickness 780 feet consist of lignites. No marine strata are associated with these beds. At Yallourn the topmost beds have yielded fossil leaves which have been described by H. Deane. This freshwater series has been termed the Yallournian by F. A. Singleton (1935), and he states that ‘‘though these coals have been referred to the Miocene they appear to pass easterly, as shown by borings, beneath the Barwonian marine sediments of Hast Gippsland whose lowest portion is not younger than the L. Miocene and may even be Upper Oligocene’; he states further that ‘‘the aspect of the flora which includes at Morwell (Yallourn) Banksia, Dryandra, Lomatia, Cinnamomum, Phyllocladus and Ginkgo suggests it is not older than Oligocene”. It has been well established by borings that lignites do occur under the Lower Miocene marine strata of Hast Gippsland (Chapman and Crespin, 1932) at depths of upwards of 1,000 feet, but these lignite beds are of no great thickness. More recent borings in East Gippsland have also proved the existence of lignites above Miocene marine strata, showing that the lignites are not limited to one horizon. In the Parish of Glencoe, some 30-35 miles east of Yallourn, logs of bores show the presence of lignite, 70 feet in thickness, beneath the earliest marine beds at depths of from 1,200 to 1,400 feet. It is quite possible that these lignites are directly connected with the lowermost freshwater beds at Morwell, but that does not mean that the whole of the Yallournian series dips below the oldest of the marine beds. The freshwater beds at Morwell and the marine beds in the Parish of Glencoe are still practically horizontal, and it is difficult to imagine how the former could dip under the latter as has been suggested by Singleton. There is, further, no proof that any marine strata have ever existed above the Morwell lignites; these latter are very hydrous, containing up to 60% of water, and they could hardly have retained that amount of water if they had ever been overlain by a thick series of marine beds. The occurrence of lignites above marine strata of Miocene age, as well as their occurrence below them, shows that there is an interdigitation of marine and freshwater beds in this part of Victoria, and it would appear probable that a continuous deposition of freshwater beds was going on at Morwell simultaneously with the deposition of marine strata elsewhere. The thickness of the Yallournian at Morwell is similar to that of the marine series in Hast Gippsland, and the deposition of the one would surely demand at least as great a period of time as that of the other. With these facts in view there would seem to be no reason why the topmost beds at Yallourn, which contain the fossil plants, might not be as young as Lower Pliocene in age. It might also be noted that H. Herman (1922) states that “the xvi PRESIDENTIAL ADDRESS. great mass of the Latrobe Valley brown coals appear to be stratigraphically superior to extensive sheets of the ‘Older Basalt’ ’’. (f) Berwick.—This locality lies some distance to the west of Morwell, and here again fluviatile beds containing fossil leaves are found underlying basalts, both resting upon Lower Palaeozoic strata. The basalts have been referred to the Older Basalt Series, but the only proof of their age is the underlying fossil plants which are listed in Table I, which were described by H. Deane (1902). II. Western Victoria. Basalt-covered fluviatile deposits similar in character to those just described are extensively developed in Western Victoria. A. Bacchus Marsh.—This lies at the eastern margin of the Ballarat Table- land and there occurs here a series of fiuviatile deposits underlying the Newer Basalts which have been described by R. Brough Smyth (1874) as follows: ‘At Bacchus Marsh conglomerates, sandy clays and beds of ironstone ranging up to 200 feet in thickness are seen overlying an older volcanic rock such as that occurring at Melbourne, Flemington, etc. The ironstone bands and ferruginous sandstones are full of the impressions of dicotyledonous leaves.” The fossil leaves that have been described are listed in Table I. These freshwater beds are in turn overlain by basalts (Newer Basalts). An excellent account of the physiography of this area has been published by C. Fenner (1918). B. The Ballarat District—The geology and physiography of this region have been described in detail by H. Baragwanath (1923); he shows it to consist of a tableland with an elevation of 1,500-1,600 feet, the surface being a peneplain cut out of Lower Palaeozoic formations. Incised into the surface of this peneplain is a series of broad valleys up to 500 feet in depth which are almost filled with a succession of fluviatile deposits and lava flows (see Figure 5). At Ballarat, above the lowest gravels, there are found four basalt-flows with interstratified fluviatile deposits. Subsequently to the outpouring of these basalts, a series of wide shallow mature valleys were cut out alike in the basalt and older rocks. At Haddon (Smyth, 1874) the lead underlying the basalt has yielded fossil fruits and fossil leaves, while at Guildford (Smyth, 1875) specimens of both fossil leaves and fossil fruits have been obtained from a lead in the Meins Freehold Goldmining Co. property, Guildford, at a depth of 198 feet below the surface (Smyth, 1874). C. Pitfield—This occurs on the southern margin of the Ballarat District and here the fluviatile deposits and their associated basalts rest upon marine strata of Tertiary age. These conditions at this locality have been described by Stanley Hunter who wrote (1909) as follows: “Bores put down show that there are three distinct flows of basalt; between the 1st and 2nd flows lay lignitiferous clays containing Tertiary leaves, between the 2nd and 3rd flows was wash similar to that taken out elsewhere at Pitfield and which Mr. E. Lidgey considers to be L. Pliocene.” Hunter states further that the bores passed a foot or so into under- lying marine beds of supposed Eocene age, but the age of these marine beds has since been determined by F. A. Singleton (1935) as being Lower Miocene. The fossil leaves referred to have been described by Henry Deane (1902) and are listed in Table I. It will be seen from the descriptions given that the fluviatile deposits and associated basalts of Western Victoria (Bacchus Marsh, Ballarat and Pitfield) are quite similar in their nature and mode of occurrence to those of Hastern Victoria PRESIDENTIAL ADDRESS. XVii (Dargo, Aberfeldy, Tangil and Narracan), that both regions have yielded a similar fossil flora (leaves and fruits), and that in both regions the physiographic setting is the same, and this surely is sufficient evidence for considering them to be of the same geological age. Yet most observers have considered those of Eastern Victoria to be of Lower Tertiary age and those of Western Victoria to be of Upper Tertiary age. It is also obvious from the descriptions given that the Tertiary fluviatile deposits of New South Wales, with their associated basalts, are similar in every way to those of Victoria. The one point of real difference between the various localities in both States is the elevation at which they stand to-day; both the geological and the physiographical evidence indicate that these Tertiary deposits were laid down on a peneplain elevated only a few hundreds of feet above sea-level and that, subsequent to their deposition, both peneplain and Tertiary deposits were elevated to form the present-day tablelands—probably at the close of the Tertiary Era; the fact that the elevation was a differential one accounts for the present difference in elevation at the various localities which have been described. The high altitude of the Tertiary formations on the Dargo High Plains (6,000 feet), together with the profound gorges which surround them, may have suggested to some of the earlier workers a high geological antiquity as compared with the Ballarat occurrences, where dissection, owing to the lower elevation (1,600 feet), is not so striking, but the difference is only one of altitude; the dissection of the Ballarat Tableland at Bacchus Marsh is at a similar stage of development to that of the Dargo High Plains. One concludes, therefore, that the Tertiary formations of New South Wales and those of Eastern and Western Victoria described here are all of one and the same geological age. The Cainozoic Fossil Flora. From the fluviatile deposits described in the last section there has been obtained a number of fossil plants, including (a) fossil leaves, (0) fossil fruits; the latter have been obtained from the coarse gravels at or near the base of the deposits, while the fossil leaves have been obtained from beds of clay overlying the gravels. The leaves and fruits have rarely both been obtained from the same leads. (a) The Fossil Leaves.—A large number of fossil leaves obtained from (1) the Emmaville District and (2) the Dalton District have been described by Ettings- hausen (1888), and were considered by him to be of Hocene age. Httingshausen considered these fossil plants to represent a mixed flora consisting partly of species related to plants still living in Australia and partly of genera and species whose nearest allies were to be found in fossil plants from countries other than Australia. Among the former he described species of Callitris, Dammara, Phyllocladus, Casuarina, Santalum, Persoonia, Grevillea, Hakea, Lomatia, Dryandra, Caricoma, Ceratopetalum, Boronia and Hucalyptus, and considered these to be more or less closely related to living Australian forms. With regard to those he considered to be foreign, he referred them to such genera as Sequoia, Myrica, Alnus, Quercus, Cinnamomum, Sassafras, Aralia, Eleocarpus, Acer and Copaifera, and considered the nearest relations of some of them to be species found in Europe and America, with geological ages varying from Cretaceous to Miocene; it is upon this evidence apparently that he gives an Hocene age to these fossils. Ettingshausen’s determinations have been severely criticized by Henry Deane, who (1896) wrote as follows: “I have carefully looked into the matter of the xviii PRESIDENTIAL ADDRESS. Dalton and Vegetable Creek fossils, and I cannot agree with the crucial deter- minations as to the character of the flora, and its resemblances to the flora of other parts of the world are utterly wrong. With the aid of R. T. Baker I have made comparisons with the fossil leaves and living ones, and so far as I have gone the various types of fossil leaves are represented among existing plants and there is no need to go outside Australia to look for them.” In his paper Deane gives examples of some of what he considers to be Httingshausen’s faulty determinations, and points out that all or nearly all of the fossil leaves described possess the form and character of existing plants living in the “brush forests” of Hastern Australia. Deane (1900) returns to the attack after he had made a study of the fossil leaves from Vegetable Creek (Emmaville), Gunning, Wingello and Bacchus Marsh (Victoria), and reaffirms his previous view that all of the species are closely related to existing Australian plants. He draws attention to the difficulty of determining which existing plant a particular fossil leaf really resembles, and states that it may resemble those of half a dozen plants belonging to widely different groups. R. H. Walcott (1920) has also questioned the value of these fossil leaves as an evidence of geological age, and states that “when living species are never determined by leaves alone, notwithstanding that they may be procured in abundance and in perfect condition, it seems to be rather unwise for stratigraphical purposes to place too much reliance upon specific determinations made from the examination of perhaps imperfect fossil leaves or specimens of wood in various conditions of preservation”’. The above criticisms not only apply to Ettingshausen’s determinaitons of New South Wales fossil leaves, but apply equally to McCoy’s determinations of geologic age of similar fossil leaves obtained from the deep-leads of Victoria, determinations which are apparently still being adhered to by workers in that State. It is worthy of note that Baron von Mueller, one of the most eminent botanists of his day, always refused to have anything to do with the determination of fossil leaves. In view of the above facts, the decisions of both Ettingshausen and McCoy as to the Hocene-Lower Miocene age of the Australian Tertiary fossil leaves cannot be accepted as reliable and, in view of the evidence put forward by Deane that they are closely related to forms still living in the “brush forests” of to-day, it is quite possible that they are no older than Pliocene in age. Henry Deane, in criticizing the determinations of Ettingshausen and McCoy, did not carry his views to their logical conclusion, because when he later described some Tertiary fossil leaves from New South Wales and Victoria he referred them to the Lower Tertiary. Deane as a botanist was primarily concerned with the correct botanical classification of his specimens and apparently accepted the views of the geologists of his day as to the Lower Tertiary age of the leads without question, apparently overlooking the fact that their opinions as to age, at least with regard to some of the leads, had been based on McCoy’s determinations of the Lower Miocene age of the fossil plants. (b) The Fossil Fruits—These were described by von Mueller (1874) and considered by him to be of Pliocene age, and that determination has generally been accepted by later writers. Some confusion of thought has been brought about by the fact that fossil leaves and fossil fruits have usually not been found in one and the same lead, and this has been accepted as further proof that the PRESIDENTIAL ADDRESS. SX leads containing the fossil leaves were geologically older than those containing the fossil fruits. However, both fossil leaves and fossil fruits have been recorded as having been obtained from some of the leads in the Ballarat district. Fossil leaves and fossil fruits have also been obtained from the same deposit at Sandy Bay, near Hobart, Tasmania (Wilkinson, 1882), and their association at other localities in Tasmania has been recorded by R. M. Johnston (1879). There is a possible explanation as to why both leaves and fruits are not usually found together. Records show that the fossil fruits have usually been obtained from the coarse gravels in the deepest part of the old river-channel, conditions quite unsuitable for the preservation of leaves; these gravels are usually highly charged with water, conditions which seem to have been particularly favourable for the preservation of the fruits, because when such fossil fruits are removed from the leads they quickly disintegrate unless preserved under water or some other liquid; at any rate that has been the writer’s experience. The fossil leaves, on the other hand, have usually been obtained from beds of fine sediment situated some distance above the main gutter in which the gravels occur, conditions which may not be entirely favourable for the preservation of the fruits. In the Ballarat District of Victoria fossil fruits and leaves have been obtained from the Haddon Lead, whereas fossil leaves only have been found in the leads at Pitfield; both series of leads occur under the same series of basalts (the Newer Basalts) and are undoubtedly of the same geological age. Fossil leaves have also been obtained from the fluviatile deposits which occur under the Newer Basalts at Bacchus Marsh, and these beds have always been considered to be of Pliocene age. Similarly, in Eastern Victoria fossil fruits have been obtained from the Tangil Lead, whereas fossil leaves have been obtained from the fluviatile beds at Narracan, in both cases under the same series of basalts, but these basalts have always in the past been referred to the older basalt series (Older Basalts) considered to be of Oligocene or Lower Miocene age, apparently on the evidence of the fossil leaves. It seems quite certain that the fluviatile beds of Tangil and Narracan are of the same geological age. R. A. Murray (1880) came up against this difficulty when describing the Tangil Lead, and made the following remarks: “It may be noted that some of the species of fossil fruits described by Baron von Miiller are common to both Miocene and Pliocene drift, specimens having been found in the gravels beneath the .Older Basalt at Tangil precisely identical in species with some obtained from the lead gravels beneath the Newer Basalt at Haddon.” Smyth (1874) had previously referred the basalts at Tangil to the Newer Basalts, and had correlated the underlying leads with the leaf-beds at Bacchus Marsh; but Murray referred the Tangil basalts to the Older Basalts because their mode of occurrence and the physiography of the surrounding country resembled that of the basalts of the Dargo and Bogong Plains, which were and are still considered in Victoria to be Older Basalts, presumably because of McCoy’s determination of the Lower Miocene age of the underlying plant beds. Fossil leaves have been described from a number of localities in Victoria, the more important of which are tabulated below; in this table the names of the genera only are given, as the writer places very little reliance upon the deter- minations of species from such material; however, had the species also been given it would have made very little difference to the result. Those of the Victorian genera which have been recorded also for New South Wales are indicated in the right-hand column. xX PRESIDENTIAL ADDRESS. TABLE I.—Fossil Leaves recorded from Victoria. ‘ Dargo. Narracan. Morwell. Berwick. Bacchus Marsh. Pitfield. N.S.W. DS x xX Cinnamomum ..... WGAUGUS ees neyen IAI CUS aynccnayeencuereterenene NGASELA Faria arate eae IDKCRVRAOUOS soaccéc SSC WUNEY So Gancoue Mristanitesmre see Hedycarya ....... Mollenedial js 5546 IMCGOINOGN “So aon00¢ Nothofagus ....... Argophyllites Daphnandra ...... Carpolithes ss ss2.- IDDOAADMWE, sooocc06 INeph elites =. .4 -4- IPAMACIOAS saccoccc TECOSPOGUMUN eee Woma bia eect IDHAUIAS “sooasacoc Apocynophyllum (Banksia eaves eee Dryandra a Gink Owe ceteris Phyllocladus ...... After allowing for incomplete collecting, particularly from some of the localities, there would seem to be little doubt that these genera all belong to one and the same Tertiary flora, a view which appears to be generally accepted. As the genus Cinnamomum appears to be the most widespread of these genera, it will be convenient to refer to this flora as the Cinnamomum Flora. It has already been shown that there is strong evidence in favour of the belief that both the fossil fruits and the fossil leaves have been derived from deposits of the same geological age; the fossil fruits were referred by Baron von Mueller to the Lower Pliocene, and a Pliocene age has since been generally accepted for them; the fossil leaves, on the other hand, have been given ages ranging from Hocene to Pliocene, according to the locality from which they have been obtained; those found under basalts believed to belong to the Older Basalt series were considered to be Oligocene or Lower Miocene in age, whereas those occurring under basalts hkelieved to belong to the Newer Basalt Series were considered to be Pliocene in age. The value of the comparisons made by Ettingshausen and McCoy with plants of Cretaceous, Eocene and Miocene ages in other continents is very doubtful. Henry Deane has repeatedly referred to the close resemblance of these fossil plants to plants living in our present-day “brush forests’, and there appears to be no reason, therefore, why these fossil leaves may not be as young as Lower Pliocene, that is, the same age as has generally been accepted for the fossil fruits; other evidence in support of this will be referred to later. nA PS Te a a al A Aa TE tsrestistiates | | TAS ap etiatratesirstreticn || | es J Sits isis estat at stilts] isl ttf | Pa rattan | tf] tates |p yl ia 1 MMS ES SS pad bd ok bd Od | The Marine Formations of New South Wales. Strata of marine origin are limited in New South Wales to a small area in the south-western corner of the State; they do not outcrop at the surface, being covered by more recent deposits, and such knowledge as we have of them is limited to information obtained from bore-holes put down in search of artesian water. A bore-hole at Arumpo has penetrated these beds to a depth of 647 feet, showing that they are upwards of 600 feet in thickness. PRESIDENTIAL ADDRESS. xxi The Marine formations of Tertiary age in Australia have been classified by Messrs. Chapman and Singleton (1923) as follows: Upper Pliocene—Werrikooian Series. Lower Pliocene—Kalimnan Series. Upper Miocene—poorly developed. Middle Miocene—polyzoal limestones of HE. Gippsland. Lower Miocene—Janjukian Series (and Barwonian Series). Upper Oligocene—Balcombian Series. The marine strata of south-western New South Wales have been referred by Chapman and Singleton mainly to the Janjukian, extending perhaps into the lower part of the Kalimnan Series. Relation of the Terrestrial and Marine Formations. In view of the unsatisfactory evidence of geological age afforded by the Tertiary fossil plants, it becomes necessary to find out what evidence can be obtained from the association of the terrestrial formations with the Tertiary marine beds. No association of terrestrial and marine formations has been found so far in New South Wales, but fortunately the two have been found in association at several localities in Victoria. (a) Pitfield Plains—The conditions at this locality have already been described, and it has been shown that the fluviatile deposits containing fossil leaves and the associated lava-flows overlie marine strata of Janjukian age (Lower Miocene) ; obviously here the former are younger than the latter, but the question is how much younger? The fluviatile deposits could not have been deposited in the sea, and it would appear to be obvious that subsequent to their deposition the marine deposits must have been elevated and the sea-bed converted into dry land before the fluviatile beds were deposited. At no very great distance to the north, on the Ballarat Tableland, similar fluviatile deposits and their associated basaltic lava flows were deposited in definite valleys ranging up to 500 feet in depth, incised into an uplifted peneplain; it is not unreasonable to assume that these valleys continued southwards into the uplifted marine strata at Pitfield Plains and that the fluviatile beds, therefore, were deposited in actual valleys, not necessarily as deep as those at Ballarat. If this supposition is correct it implies that a consider- able interval, accompanied by uplift and subsequent denudation, elapsed between the deposition respectively of the marine strata and the fluviatile strata. Support for this view is supplied by geological sections in the valley of the Moorabool River some distance to the east of Pitfield Plains. The geology of this region has been described by Hall and Pritchard (1897), who, in their geological sections, show the Newer Basalts, the same basalts as those occurring at Pitfield Plains, resting unconformably upon an eroded surface of the underlying Janjukian marine beds. The evidence from these two localities shows that the leaf-bearing fiuviatile deposits and their associated lava flows are definitely younger than Lower Miocene and quite possibly as young as Pliocene. (b) The Hamilton District—The Newer Basalts of the Ballarat Tableland continue westwards without a break to the Hamilton District, where they cap a tableland about 600 feet in altitude, the tableland having a gentle tilt from Ballarat (1,600 feet) westwards to Hamilton (600 feet). At Hamilton the basalts show the same deep weathering and the same mature dissection as they do at Ballarat, but here they rest directly upon marine strata. XXii PRESIDENTIAL ADDRESS. The marine strata consist of Janjukian beds capped by a few feet only of Kalimnan marine beds, and the latter are capped in turn by the Newer Basalts. The nature of the contact between the two latter formations is not very clear in the field, but the evidence suggests that the Kalimnan sedimentation was inter- rupted by the pouring out of the basaltic lavas over the sea-bottom; it is, how- ever, possible that some erosion of the marine beds may have taken place before the extrusion of the basalts. However, one fact is quite clear, and that is that the basalts cannot be older than Lower Pliocene. Besides the Newer Basalts just referred to, there occurs in this district a still younger. series of basaltic lava flows which have always in the past been grouped under the term Newer Basalts. At Byaduk, some few miles south of Hamilton, these younger basalts may be seen as flows partly filling the mature valleys which occur on the surface of the tableland. The Newer Basalts proper, in which the mature valleys occur, are deeply weathered, the ridges between the mature valleys are gently rounded, while rock outcrops are few and inconspicuous. The still younger basalt flows which lie in, and have flowed down, the mature valleys are but little weathered, there is very little soil, and consequently very little vegetation on their surfaces, and typical lava tunnels exist underneath them. When viewed from a short distance they give the impression of having flowed down the valley only a few years ago. From the description just given it will be obvious that quite a long erosion interval exists between these two series of basalts, and the younger cannot be older than Pleistocene and may even be Recent in age. Drik-Drik District —The basalt-capped tableland extends south-westwards from Hamilton to the Glenelg River and has here an elevation of about 500 feet, the basalts themselves being about 250 feet in thickness. The writer is indebted to Mr. R. A. Keble for the details of the geology of this district; he states that the present-day valley of the Glenelg River is younger than the basalt which caps the tableland and that this valley, since its first formation, has been partly submerged beneath the sea and later uplifted; during the submergence, marine strata of Werrikooian (Upper Pliocene) age were deposited in it and such strata are, therefore, younger than the basalts. The succession of events as given by Mr. Keble was as follows: 1. Extrusion of the basalts (Newer Basalts) which covered the ancient valley of the Glenelg River. 2. Initial erosion of the present Glenelg Valley at the fringe of the basalt sheet. 3. Submergence followed by the deposition of marine strata of Werrikooian age. 4. Uplift bringing the Glenelg Valley again above sea-level. This evidence gives an upward limit to the age of the Newer Basalts; they are pre-Werrikooian. From the evidence at Pitfield Plains, Moorabool River, Hamilton and Drik- Drik, it seems quite certain, therefore, that the Newer Basalts of Western Victoria and their associated fiuviatile beds containing fossil leaves and fossil fruits are of Pliocene age, and most probably of Lower Pliocene age. Having considered the upward limit of age of the Cinnamomum flora, attention should now be given as to what evidence there may be as to its downward limit of age. F. A. Singleton (1935), in referring to the occurrence of the genus Cinnamomum in the upper series of the marine beds at Beaumaris (Victoria), PRESIDENTIAL ADDRESS. Xxiil states that these beds have usually been referred to the Kalimnan (Lower Pliocene), but gives some reasons for thinking that they may be Upper Miocene; even if this suggestion should prove to be correct, it does not bring the genus Cinnamomum lower than Upper Miocene. At Sentinel Rock (Victoria) leaf-bearing beds overlie marine strata of Barwonian (Lower to Middle Miocene) age. F. Chapman (1905) states that “this flora is a very distinct one, the leaves being chiefly of the Coprosma (Coprosmo- phyllum Hy. Deane) type; other genera present are the proteaceous Persoonia, the coniferous Phyllocladus; Casuarina and Acacia are also present’. This flora is certainly not the typical Cinnamomum flora, but in any case, resting as it does upon marine Barwonian strata, it cannot be older than Upper Miocene and may even be younger. At Moorlands in South Australia (Mawson and Chapman, 1921) fossil plants have been found occurring below marine Miocene strata, but only two genera have been described, a Banksia and a Telopea; this again is not the typical Cinnamomum flora. More recently some fossil leaves have been found by Sir Douglas Mawson in clay beds lying beneath marine strata of Janjukian age at Blanche Point, Aldinga, in South Australia. These have been described by F. Chapman (1935), and include the genera Ficonium, Pomaderris, cf. Banksia, Eleocarpus, Sterculia, similar, according to Chapman, to species occurring in the Cinnamomum flora, but as to whether these few fossil plants truly represent the Cinnamomum flora is a matter for question. From the Redbank Plains in south-eastern Queensland a fossil flora has been found which includes the genera Sapindus, Ficus, Myrica, Banksia, Cinnamomum, Diemenia, Eucalyptus and Apocynophyllum, and there would appear to be no doubt that it is a similar flora to the Cinnamomum fiora of New South Wales and Victoria. These same beds have yielded fossil fish which have been described by E. S. Hills (1934); he has described four species, all new ones, as follows: (a) Epiceratodus denticulatus, which Hills considers to be very close to HH. forsteri, a species which ranges from Pleistocene to Recent; (0) Phareodus queenslandicus—Hills states that the only other known occurrences of this genus are in the Eocene of Wyoming and the Lower Tertiary of Java; the Queensland example is, however, a new species; (c) Notogoneus parvus.—The only other known fossils of this genus are stated to range from Eocene to Oligocene. Hills, however, was doubtful as to whether his Queensland specimens were really referable to Notogoneus, and states that ‘better material may reveal differences sufficient to separate from this genus”; (ad) Percalates antiquus.—Hills’s conclusion was that there is an extremely close resemblance between this species and the living P. colonomum. It is obvious that the evidence of age given by these fossil fish is somewhat conflicting; this was realized by Hills, and he referred them tentatively to the Oligocene Period; the question may well be raised as to whether a younger age is not suggested by these fossil fish in view of the fact that two of them are very closely related to Pleistocene and living species, while, of the other two, one is a new species, and of the other the true genus is in doubt. From the above it will be seen that although some few fossil leaves have been found in undoubted pre-Miocene strata, there is at present no certain evidence, from association with marine strata, that the Cinnamomum flora as a XXiV PRESIDENTIAL ADDRESS. whole is older than Lower Pliocene, while so far as the evidence of the associated fossil fish in south-eastern Queensland is concerned, while it cannot be ignored, it is at least doubtful. It is quite certain, of course, that some of the members of this flora existed in pre-Pliocene times; perhaps they all did; but the only thing that we can be really sure about at present is that this flora was abundant and widespread in Pliocene times. Reference should be made here to an association of marine strata with an auriferous lead at the Welcome Rush near Stawell (Victoria). This occurrence was first described by R. Brough Smyth in a letter to the Geological Magazine; he stated that marine fossils had been obtained from a bed of ferruginous material about thirty-eight feet below the surface of the ground and forty feet above the Silurian bedrock upon which the auriferous wash rests. The few marine fossils found here were described by F. McCoy, who referred them to the Lower Pliocene. These fossils, which are few in number and most of them poorly preserved, have since been re-described by F. Chapman (1905), who concluded that ‘“‘they repre- sented a horizon near the summit of the Janjukian Series, but older than the Kalimnan (Lower Pliocene) and younger than the Balcombian”; that is, about Middle Miocene in age. The strata associated with the auriferous gravels have not yielded any fossil leaves or fossil fruits, and they do not appear to be associated with any of the Tertiary Basalts; consequently there is nothing to enable any correlation to be made with other Victorian fluviatile deposits, and they do not, therefore, afford any direct evidence as to the geological age of the latter. The Volcanic Rocks of New South Wales. The Cainozoic volcanic rocks of New South Wales were described in some detail by the writer (1923), and there is no need to add here to that description; they were classified as follows: The Alkaline Series—Late Tertiary. The Plateau Basalts—Lower Pliocene. The Monadnock Basalts—Upper Cretaceous or Hocene. (a) The Monadnock Basalts——These occur as cappings on some of the physio- graphical residuals (monadnocks) rising above the level of the adjacent tablelands; the areas covered are relatively small. (0) The Plateau Basalts.—These are the basalts covering extensive areas of the surfaces of the present-day tablelands and which in places overlie the fluviatile deposits already described. The term plateau basalt was used in a purely geographical sense and was a very convenient one, but of late years this name has, unwisely, been given a petrological significance which does not necessarily apply to all basalts situated on tablelands. Reasons have already been given for referring these basalts to the Lower Pliocene. (c) The Alkaline Series.—These consist mainly of alkaline rocks ranging from acid to basic in composition and include some basalts. The areas occupied are relatively small. The Cainozoic Volcanic Rocks were later referred to in some detail by Dr. W. R. Browne (1933), who differed from the writer on a number of points, the most important difference being with regard to the age of the Alkaline Series; these he considers to be older than the Plateau Basalts; these differences will not be discussed here, but will form the subject later of a separate paper. Dr, Browne drew attention in his paper to one very interesting occurrence in the PRESIDENTIAL ADDRESS. XXV Moruya District of New South Wales, where Dr. Ida Brown had noted the occurrence of basalts overlying beds of coarse grit containing fragments of pelecypods, which F. A. Singleton had tentatively referred to the Upper Cainozoic. The Cainozoic Volcanic Rocks of Victoria. These have in the past been classified as follows, and a summary of their occurrence has been published by E. W. Skeats (1909): 1. The Alkaline Series—Middle Cainozoic. 2. The Newer Basalts—Pliocene to Pleistocene. 3. The Older Basalts—Oligocene or Miocene. The Older Basalts——In south central Victoria, but particularly in the districts around and adjacent to Port Phillip, basalts occur which definitely underlie marine strata of Lower Miocene age. In summarizing these occurrences, F. A. Singleton states ‘that basalts have been found beneath Janjukian limestone at Airey’s Inlet; beneath Lepidocyclina limestone at Flinders and Keilor; beneath Balcombian marls at Balcombe Bay, and under beds of probably similar age at Curlewis and Royal Park’. He considers these basalts to be Oligocene in age, since they underlie the marine beds unconformably. It was to occurrences such as these that the term “older basalts” was originally applied; there can, of course, be no doubt as to their Lower Cainozoic age. Unfortunately, there has later been grouped with them a series of basalts in Hastern Victoria which are not associated with marine strata; these include the occurrences already described as occurring at Dargo High Plains, Aberfeldy, Tangil, Narracan, Berwick, etc. The correlation of these occurrences with the Older Basalts was apparently based upon McCoy’s determination of the Lower Miocene age of the fossil plants found under the basalts at Dargo High Plains, but, as has already been pointed out in an earlier part of this address, it is much more probable that these plants are of Lower Pliocene age, and, if this is correct, the basalts cannot be older than Lower Pliocene. One interesting example of basalts of two distinct ages occurs at Aberfeldy. The geology of this district has been described by Mr. Baragwanath (1925); he describes the existence of two peneplains, an older one now surviving only in the form of residuals, of which Mt. Useful (4,760 feet) is one, and a younger one now forming the surface of the existing tableland whose altitude near Mt. Useful is about 3,500 feet. A basalt capping overlying what Mr. Baragwanath calls peneplain gravels and which is therefore part of a one-time lava flow, occurs on top of Mt. Useful, that is, on the older peneplain; basalts also occur on the surface of the present tableland (with underlying river gravels), that is, on the surface of the younger peneplain—this basalt was also a lava flow. It is obvious that the basalt on top of Mt. Useful must be much older geologically than that on the tableland below; the former would correspond with the Monadnock basalts of New South Wales, while the latter would correspond with the Plateau basalts of New South Wales. The possible age of the Mt. Useful basalt will be discussed later. Under the term “older basalt’? has also been included a flow which occurs interstratified with Miocene marine strata at Maude in the Moorabool Valley (Hall and Pritchard, 1895); this flow cannot be older than Lower Miocene. It appears, therefore, that basalts of three distinct ages, Oligocene, Lower Miocene and Lower Pliocene, have been grouped together under the term “Older Basalts’’. Cc xXxvi PRESIDENTIAL ADDRESS. The Newer Basalts.——This term has been used to include the whole of the basalts occurring in Western Victoria, and the age given by most writers has been Pliocene to Pleistocene. In this region there are basalts of at least two distinct geological ages, the two being separated by a wide erosion interval. The older series is that which occurs in the more northern part of the area, and forms a capping to the low tableland which extends from Bacchus Marsh to the Glenelg River. These basalts have already been referred to in the description of the fiuviatile deposits which in places underlie, or are interstratified with, them and reasons advanced for considering them to be of Lower Pliocene age. It has been pointed out by E. W. Skeats (1909) that wide mature valleys have been incised in the surface of these basalts, and by the writer that at Byaduk younger basalts have flowed down and partly filled these mature valleys, and that these younger basalts cannot be older than late Pleistocene and may even be as young as Recent in age. F. A. Singleton (1935) has referred to the existence at Portland, in the far west of Victoria, of basalts overlying oyster beds of Werrikooian (latest Pliocene) age; these basalts are probably also of Pleistocene age. In the southern part of Western Victoria, particularly in the Colac and Camperdown districts, there is an extensive development of basaltic lava flows, beds of tuff and tuff cones. F. A. Singleton (1935) states that because of their state of preservation these cannot be older than Upper Pleistocene; the writer has visited this area and would go so far as to say that the vuleanicity may even have continued into Recent times. The newer basalts of Western Victoria, therefore, include (a) basalts of Lower Pliocene age, and (U) basalts of Pleistocene age, perhaps extending into the Recent Period. The Alkaline Series—MThese have only a very limited distribution and were originally referred by Prof. E. W. Skeats (1909) to the Middle Cainozoic, but more recently F. A. Singleton (1935) has referred them to the Late Pliocene or Pleistocene. It will be seen, therefore, that the basalts of Victoria apparently belong to at least four distinct geological periods, (a) Oligocene, (b) Lower Miocene, (c) Lower Pliocene, (d) Pleistocene to Recent. Under these circumstances the use of the terms Older and Newer Basalts is misleading, and has led to much confusion, and it would be better if both terms were dropped. The Huristing Topography of New South Wales and its Development. No part of the State of New South Wales, except one small area in the south- western corner, has been beneath the sea since the close of the Mesozoic Era, while the greater part of it has not been beneath the sea since the close of the Palaeozoic Era; the present topography, therefore, has been in course of development since at least as far back as the Cretaceous Period. It is not necessary to give here a detailed account of the existing topography; that has already been fully done by HE. C. Andrews (1910), and nothing has been published since which necessitates any serious modification of the views put forward by him. It will be necessary, however, to refer to the more important features for the purpose of showing their relation to such Cainozoic geological formations as do occur; it will also be necessary to correlate the physiographical features of New South Wales with those of Victoria. The greater part of New South Wales to-day consists of tablelands with altitudes ranging from as low as a few hundred to as high as 6,000 feet or more; the exceptions to this generalization are the extensive alluvial plains which exist PRESIDENTIAL ADDRESS. XXVii in the north-western and south-western parts of the State; similar tablelands extend northwards into Queensland and southwards into Victoria. The original surfaces of these tablelands were all parts of a great peneplain (the Great Hast Australian Peneplain), developed probably during Lower Tertiary time and elevated to form the existing tablelands at the close of the Cainozoic Era (the Kosciusko Uplift). Since their uplift the tablelands have suffered considerable dissection, particularly along their eastern and western margins, but there still remain to-day extensive areas, particularly adjacent to the Main Divide, which are still undis- sected; these undissected tableland remnants give us a picture of the late Cainozoic land surface, as it existed before the uplift took place, and provide evidence which helps us to interpret the geological history of that Era. An ideal section across such a tableland remnant is given in Figure 6; it shows the general level of the peneplain surface, above which rise residuals of the older tableland out of which the peneplain was cut. In any one district the more important of these residuals all rise to approximately the same altitude above the peneplain surface, and this gives some measure (minimum, of course) of the altitude of the older tableland. The altitude of these residuals varies from district to district, ranging from 450 feet to 1,500 feet. It is highly probable, of course, that the surface of this older tableland was also a peneplain, and this older peneplain, now almost completely destroyed, was probably developed during the Cretaceous Period, and may be tentatively referred to as the Cretaceous Peneplain, while its successor, which forms the surface of the present tablelands, may for convenience be referred to as the Lower Tertiary Peneplain. In some districts, notably the Blue Mountain Tableland, the residuals above referred to are capped with basalt, and in some cases river gravels underlie these basalts. When the surfaces of the present-day tablelands are studied in detail it is found that the original peneplain surfaces have undergone certain modifications as shown in Figure 2; it is found that, after its development, stream channels were incised in its surfaces to depths ranging from 300 to 400 feet; for this to have been possible an uplift of 300 to 400 feet must have taken place. Owing to some change in conditions active erosion in these stream channels gave place to aggrada- tion and they became partly filled with deposits of sand, clay and lignite. This was followed in many districts by the outpouring of extensive flows of basalt which covered up the fluviatile deposits, partly filled the already formed valleys in some cases, and in others completely filled them and overflowed on to the peneplain surface. After the volcanic outbursts ceased, erosion continued and resulted in the production of a network of broad mature valleys over the peneplain surface, cut alike out of the basalts and the older rocks; these valleys range up to 400 feet in depth and up to several miles in width and are separated from one another by gently rounded ridges, but in places moderate areas of the original peneplain surface still survive. Such an extensive development of wide mature valleys in an area of low relief (300 to 400 feet) must. have required an extensive period of time, amounting almost to a cycle of erosion. This incomplete cycle of erosion was terminated by the uplift which produced the present-day tablelands, and which elevated the system of mature valleys to their present high altitude; because of their elevated position EH. C. Andrews has referred to them as the “Upland Valleys’. At the present time the floors of these old Cainozoic valleys are aggraded and no active erosion is taking place, but in many places the gorges of the present cycle of erosion can be seen heading back along them, and in such XXVili PRESIDENTIAL ADDRESS. places, of course, the valleys are being deepened and active erosion is taking place. For the production of a topography such as has just been described the following succession of events would be necessary: 1. A cycle of erosion which produced the older peneplain (the ? Cretaceous Peneplain) ; 2. An uplift of from 450 to 1,500 feet which converted this peneplain into a series of tablelands; 3. A second cycle of erosion which produced the Lower Tertiary Peneplain (Great Hast Australian Peneplain) ; 4. An uplift of from 300 to 400 feet producing low tablelands; 5. An incomplete cycle of erosion which produced the system of mature valleys (the Upland Valleys) and which was accompanied by extensive voleanie activity; 6. The Kosciusko Uplift which produced the existing tablelands of Hastern Australia. The Geomorphology of Victoria. It is not proposed to attempt here a detailed account of the geomorphology of Victoria, but merely to outline sufficient of its more important features to make a comparison with that of New South Wales possible. The most recent summary of the physiography of Victoria is that given by E. S. Hills (1935); in this he divides the State into a number of physiographic divisions with a general east-west trend; these divisions, starting from the north, are as follows: (a) The Murray Basin Plains province, a low-lying alluviated region lying to the north of the main belt of tablelands; this is similar to and continuous with the Riverina Plains of New South Wales; (b) The Western and Eastern Highland Provinces which together form an almost continuous belt of highlands lying along the main divide of the State; (c) A continuous belt of lowlands lying along the southern margins of the highland provinces; this is the region called by Professor Gregory the Great Valley of Victoria; much of it was covered by the sea during a considerable part of Tertiary time; (d) Two relatively small highland regions lying to the south of (c); the eastern one is called by Hills the South Gippsland Highlands, while the western one is referred to as the Otway Ranges. The Eastern Highland Province ranges up to 6,000 feet in altitude, and at its eastern end joins up and is continuous with the Southern Tableland of New South Wales. Hills states that the dominant physiographic controls in these highlands are differential erosion, late Tertiary warp movements and Older Basalts; these latter he considers to be Oligocene to Miocene in age. He states that these flows filled pre-existing depressions and that, upon the elevation of the tableland and its subsequent dissection, they gave rise to lava residuals which occupy some of the highest land. A description of the details of the physiography of a portion of this region called the Aberfeldy District by H. Baragwanath (1925) is very informative; he shows the presence there of two distinct peneplains, a younger one which forms the surface of the present-day tableland at an altitude of 3,000 to 3,500 feet and an older one now surviving in the form of residuals ranging from 1,000 to 1,500 PRESIDENTIAL ADDRESS. OX feet above the general level of the tableland. These two erosion levels obviously correspond to the two peneplains which exist across the border in New South Wales. At Aberfeldy basalts occur on both peneplains; Baragwanath described a small area of basalt overlying gravels on the top of Mt. Useful (4,760 ft.), a part of the older peneplain and also the occurrence of basalts on the lower peneplain level, obviously lying in a valley eroded in that level; these two basalt occurrences are obviously of different ages and correspond to the Monadnock basalts and Plateau basalts respectively of New South Wales. The maps and sections published by R. A. Murray of the Bogong and Dargo High Plains show the presence there, but at a higher altitude, of a peneplain corresponding to that of the younger one at Aberfeldy, also with its basalt-covered stream-channels. The South Gippsland Highland has already been referred to in describing the fluviatile deposits at Hast Tangil and Narracan, and differs from the highland region to the north only in its lower elevation. Hills states that these highlands owe their elevation mainly to Pliocene earth movements, and that faulting was dominant during their uplift. The Western Highland Province has a much lower general altitude than the Hastern Province, ranging from a few hundred up to about 1,600 feet in altitude. Hills states that this province comprises ranges and valleys resulting from the differential erosion of a region of complex geology now partly buried beneath (?) Pliocene, Pleistocene and Recent basalts, and states further that prominent ranges rise above the general level of these highlands, such as Mt. Macedon, Mt. Brangor, Mt. Farrangower and the Grampian Mountains; these latter are considered by him to be residuals. H. Baragwanath’s description of the geology of the Ballarat District (1928) shows that the surface of the tableland there is a similar well-developed peneplain to that. which occurs in Hastern Victoria, with similar valleys incised into its surface containing fluviatile deposits with similar fossil leaves and fruits and the whole partly covered by flows of basalt. The one important difference between the eastern and western province is that the latter does not show such striking dissection, but this is essentially a matter of altitude. The Western Tableland Province is highest along its eastern margin (about 1,600 feet in altitude), and here, for example at Bacchus Marsh, the dissection is relatively just as highly developed as in the Eastern Tablelands. In all other directions, but particularly westwards, this Western Highland Province is gently tilted and along its western margin the altitude has fallen to 500 feet or less; the streams which drain it have consequently relatively low grades and there has been no opportunity for the cutting out of deep gorges. The average rainfall of this western region also is much lower than that of the high tablelands in the Hastern Highland Province with a consequent smaller volume of water in the stream-channels. The profound dissection of the Eastern Highland Province, together with the belief that the basalts capping the tablelands of that region were much older than those of the western province, seems to have led to the belief that the two regions have had a different physiographic history, but when one comes to analyse the essential features of the two regions there appears to be no real difference apart from that of altitude. In both regions the evidence shows (1) the presence of a well-developed peneplain, now forming the surface of the tablelands, (2) an elevation of this peneplain a few hundreds of feet followed by the cutting of shallow valleys into its surface, (3) the partial filling of these valleys by fluviatile deposits containing fossil leaves and fossil fruits, (4) outpouring of basalts covering the xxXxX PRESIDENTIAL ADDRESS. fluviatile deposits, filling the valleys and in places overflowing on to the surrounding peneplain surface, (5) subsequent to the vulcanicity the development of wide shallow mature valleys alike in the basalts and older rocks, and (6) uplift to form the present tablelands. The above is exactly the succession of events recorded along the whole of the tableland region of New South Wales. The one important feature in which the Cainozoic history of Victoria differs from that of New South Wales was in the development of subsidence areas which allowed of marine sedimentation in such areas throughout a considerable part of Tertiary time. Summary. From the evidence presented, one gathers that the more important events of the geological history of the Cainozoic Era in New South Wales, including also something of the Cretaceous Period, were as listed below. This succession of events appears to hold good also for the highlands of the State of Victoria. The suggested geological age for some of the items is, as will be pointed out later, only tentative. 1. (?) Cretaceous Period. 8} "Ze6L ‘Auenugasy Yigg pepuy 4we9A “LNNODOV AWOONI L % 698913 L & 6S8‘9T3 eS hy 6 (Ores 00 9 G6 6b 00 09 OG 65 tamara Tiny B G Cre eiAedets SSUIAVS Y][VOMUOWUIOD G LI LOE Pros ‘pyT Aoupsg 0 OL PF JUNO YW [Vlad yy jo Auvdwop sulyueg [elo1euw9D L &L PSS 22 RXRIE een UI8s 1B JUNODDW VsUIODUT —ysep 0 0 ozs‘s piel ; : pezijeideg aswoouy peyeyNWhooVy 0 0 08ST ; a eee ees sTosuoD 0 0 o000'%r ° AVIV WILMA ATS AQ peywenbeq JuNoWy WG ‘pS 3 ‘p's 3 ‘SLHSSV “SHILITIGVIT "266, ‘Auenuqea4 43g¢2 32 LAAHS AONV1VG “LNNOODOV ADOIOIALOVE THE STRUCTURE OF GALLS FORMED BY CYTTARIA SEPTENTRIONALIS ON FAGUS MOORE. By JANET M. WILson, B.A. (Plates i-ii; twelve Text-figures. ) [Read 31st March, 1937.] The parasitic fungus Cyttaria has been found attacking different species of Fagus in South America, Australia and New Zealand. Two species have been recorded in Australia, Cyttaria Gunnii Berk., which grows on Fagus Cunninghami Hook. in Victoria and Tasmania, and Cyttaria septentrionalis Herb. on Fagus Moorei F.v.M. in New South Wales and southern Queensland. C. septentrionalis was first described by Herbert (1932) from the MacPherson Ranges, on the southern Queensland border, and was later recorded by the writer (1935) from Barrington Tops, Mt. Royal Ranges, north-west of Newcastle, N.S.W. Cyttaria has been placed in the tamily Cyttariaceae, an inoperculate family of the Pezizales. Materials. The material used in this investigation was collected on 28th August and 6th October, 1935, near the summit of Barrington Tops, New South Wales. Micro- tome sections of the gall were stained by the iron-alum haematoxylin method, and with gentian violet and orange G. These showed the details of the mycelium. Hand sections were also made and stained with lacto-phenol-cotton blue. By this method the mycelium and cytoplasm stained a bright blue and were differentiated from the host cells. The distribution of the fungus in the tissues could thus be traced. Gall Formation. Infection by the fungus causes certain modifications of the host which result in the formation of hard woody galls. Galls develop on all infected stems and branches which are undergoing secondary thickening. Secondary tissues only are infected. Macroscopic Hxamination of Galls. The galls vary from about haif an inch to a few feet in length, and from half an inch to about eighteen inches in diameter. They may be long and narrow (Plate i, figs. 1, 2) or short and round (Plate i, fig. 3). Long narrow galls are the commoner, and their shape is due to the fact that infecting mycelium spreads along the cambium chiefly in one direction, parallel to the long axis of the stem. It extends further each year, so that the galls are widest in the centre, tapering off towards each end. The long narrow galls are often somewhat twisted round the stem, following the natural twist of the grain of the wood. In the round short galls the parasitic mycelium has not travelled longitudinally to any extent from the centre of infection. E 2 GALLS FORMED BY CYTTARIA SEPTENTRIONALIS, A transverse section across a gall shows that all the tissues of the stem are not invaded (Text-fig. 1). One or more irregularly wedge-shaped areas of infected tissue can be seen in the stem (A in Text-fig. ld) extending from the cortex nearly to the pith. Each infected section of the stem is generally the result of one primary infection, but compound galls, which owe their origin to two or more primary infections close together, are not uncommon. This condition is shown by the gall illustrated in Plate i, figs. 4a and 4b. This gall has four components which can be seen externally at A, B, C and D as erumpent areas separated by normal bark. The internal extent of the infected tissues is shown in Text-figure 1, a—h, repre- senting transverse sections of the gall taken at intervals of one inch. Infected tissues are shaded, the unshaded parts representing normal xylem. ‘The centre of the stem is marked in each case by a small circle. It can be seen that each infected area may be split up by narrow bands of normal xylem (A in Text-fig. 1a), but all are the result of a single infection. Usually the infected area or areas are on one side of the stem only, giving it a very asymmetrical appearance. This is because infection causes an increase in the size of the tissues near, but not in, these infected areas, making the wood some distance from it on the infected side of the stem much thicker than on the uninfected side (Text-figs. 1 and 2). The twisted appearance of some galls is due to the occurrence of several infections fairly close together. Age of Galls. The mycelium is perennial and grows each year during the most active growth period of the host tree. The annual rings are fairly well marked in the uninfected wood of the gall (Plate i, fig. 5). Large vessels are formed each spring, but at the end of the active period of growth thicker-walled tracheids and fibres are formed. The age of any twig or branch can therefore be calculated. By making transverse sections of a gall, a point can be found where the infected tissue most closely approaches the pith. This has been taken to be the point at which infection first took place. It has always been found that infected xylem is present in the second annual ring, indicating that the fungus first becomes active at the commencement of the second growing season. By tracing the inward extent of the fungus in sections progressively nearer the ends of the gall, a region can be found where the infected tissue extends only to the beginning of the third annual ring (X in Text-fig. 2). The distance between this and the area of initial infection gives the rate of growth of the fungus longitudinally along the cambium in one year. Similarly the growth rate in subsequent years can be found. It was found that the growth rate of the fungus in the stem varies considerably from a few millimetres to over 1 centimetre per year. Tissues Infected. The tissues susceptible to infection are the cortex, phloem, cambium and secondary xylem. Of these the xylem is the chief tissue infected and forms the bulk of the gall. (A). The Secondary Xylem.—Three types of cells occur in the secondary xylem of the gall: (1) Normal xylem elements; (2) Cells which contain the fungal hyphae; and (3) Cells which do not contain hyphae, but are modified in such a way that they do not develop normally. (1). Normal xylem consists of vessels, tracheids, fibres and a little parenchyma, interrupted at intervals by xylem rays one or two cells wide and about twelve cells deep (Plate i, figs. 5, 6, 7). Fairly well defined annual rings BY JANET M. WILSON. A - A Ho ea i NN a fi c WY d La Text-figs. 1-5. 1.—Series of transverse sections one inch apart from the compound gall shown in Plate i, figs. 4a and 4b, to show the areas of the stem occupied by the various components of the gall. Infected areas are shaded and the centre of the stem is marked by a small circle. The various components are shown at A, B, C and D. x 0°5. 2.—Transverse section of a gall near the centre of infection. A, normal xylem; B, cambium; C, infected tissue; P, primary xylem; X, point at which infection extends to third annual ring. x 12. 3-4.—Sections of infected cells showing mycelium. x 720. 5.—Transverse section of portion of a gall showing tracheidal cells. x 720. 4 GALLS FORMED BY CYTTARIA SEPTENTRIONALIS, are shown (A in Plate i, fig. 5), since there is a definite period of rapid growth each spring following a period of inactivity of the cambium during the winter. These cells in themselves are quite normal, but between infected areas, and for a short distance on either side of infected areas, they are produced in greater numbers than in other parts of the stem (Text-fig. 2), thus giving the increased diameter referred to above. ; (2). The tissues containing fungal mycelium resemble ordinary parenchyma. The cells are isodiametric, with fairly thick, but not lignified, walls and they show no prominent pitting (Text-figs. 3, 4; Pl. i, fig. 5; Pl. ii, figs. 8, 16). These cells originate as xylem elements. They become infected with mycelium as they are cut off from the cambium and their normal process of development is modified by the presence of the fungus. Instead of acquiring lignified walls and losing their contents and so becoming vessels, fibres or tracheids, or developing into parenchyma or ray cells, they elongate slightly, but otherwise remain little altered. (3). The mycelium is not itself found in any other type of cell, but its presence causes modifications in the adjoining xylem (B in Text-fig. 2). These modifications become more marked as the gall increases in age. Young xylem elements in the vicinity of infected cells develop into tracheid-like cells. In an old gall these cells often occupy a larger area than do the infected cells, and it is to them that the gall owes much of its increase in size over that of the stem (Text-fig. 2). In the mature state these cells vary much in size and shape (Text-figs. 5 and 12). The modified cells are usually several times longer than broad (Plate ii, fig. 8). Plate ii, fig. 8 shows infected cells (A) bordered by modified xylem (B) and finally unmodified xylem (C). Plate ii, fig. 12, shows tracheidal cells at the upper edge of an infected area bordered on both sides by normal xylem. These tracheidal cells tend to dove-tail into one another. This is shown especially well in tangential section (PI. ii, fig. 9) and in transverse section (Text-fig. 5). Their walls are lignified and show prominent scalariform pits with very narrow borders (PI. ii, fig. 10 and Text-fig. 5). The direction of growth of the tracheidal cells varies considerably as is shown in transverse section (Pl. ii, figs. 10, 11, 8, 12) and longitudinal section (Pl. ii, fig. 9). In these sections cells are seen both longitudinally and transversely arranged. The radial arrangement of the xylem is therefore entirely lost in the region where they occur, and it becomes more irregular the older the gall (PI. ii, fig. 13). Starch grains are present in great abundance in some of the young tracheidal cells (BE ai; figs) 14): Areas of uninfected xylem are often seen arising in an area of infected xylem (Text-figs. 1b, 1d, A in Plate i, fig. 5). These are mostly wedge-shaped with the thin edge inward. Each must have originated from a cell of the cambium in the infected region which by chance was uninfected and therefore able to give rise to uninfected cells. (B). The Cortex and Phloem.—tIn the primary cortex and phloem, infection produces a result resembling in some respects that produced in the xylem. The cells which contain the mycelium are similar in all respects to the infected cells in the xylem. The reaction of the phloem and cortex to fungal invasion differs from that of the xylem principally in that uninfected cells are in no way modified. Infection of the phloem causes an increase in the number of normal cells in the neighbourhood of the infected cells, thus increasing the size of the phloem tissue (Plate i, fig. 7). BY JANET M. WILSON. 5 The secondary cortex is lacking or only a few cells in width, and appears never to be infected (Plate ii, fig. 15). (C). The Cambium—The infected cells in the cambium are similar to infected cells in other tissues (B, Plate i, fig. 5). Though the cambium seems to be the centre from which other tissues are infected, the mycelium does not spread in a lateral direction along it further than it does in the xylem or the phloem, nor does it cause any modification of neighbouring cambial cells. Modified tracheidal cells are derived from uninfected cambium which at the same time produces uninfected phloem on the other side. In this case the phloem cells are usually produced at a more rapid rate than in uninfected stems. Text-figs. 6-12. 6.—Section of an infected cell showing intercellular mycelium. x 960. 7-12.—Sections of infected cells showing effects of haustoria (H) on host nuclei (N). x 960. The Mycelium within the Gall. The vegetative mycelium of Cyttaria septentrionalis is fairly evenly distributed throughout the tissues it invades, except just below fruiting bodies, where the host cells are more or less completely filled with mycelium. Plate i, fig. 5, shows that no massing of fungal mycelium occurs in the wood. The mycelium is septate and moderately thin-walled (Text-fig. 3), but the cells vary considerably in length. They usually appear to be uninucleate. This condition does not always obtain in the haustoria, which frequently show the presence of 2 or 3 nuclei (Text-figs. 8, 11, 12). The protoplasm is homogeneous and not very dense (Text-fig. 3). The mycelium seems to be able to make its way either between the cells or across them, i.e., it is both intra- and inter-cellular (Text-figs. 4, 6). At the point where it enters the cell through the wall it may show a slight constriction (Text-fig. 7), but this is not invariable (see also Text-fig. 4). The intercellular mycelium sends into the cells haustoria which are irregular in shape and often prominently lobed (Text-figs. 9 and 10). The Effects of the Mycelium on Host Cells and Tissues. The hypha or haustorium, having entered the cell, usually approaches the nucleus (Text-fig. 4) and finally comes into contact with it (Text-fig. 7), or coils 6 GALLS FORMED BY CYTTARIA SEPTENTRIONALIS, partially round it (Text-fig. 8). This causes, in most cases, considerable enlarge- ment of the host nucleus. Sometimes a definite change in the shape of the nucleus is apparent; it may become elongated, lobed or kidney-shaped (Text-figs. 9, 11, 12). The fungus does not appear to destroy the nucleus of the infected xylem or phloem cells, and, as far as has been observed, the host cells of these tissues are not eventually killed. Just below a fruiting body, however, the cortical cells become so filled with mycelium that the nucleus and all the contents are completely absorbed and replaced by the fungal mycelium. The result of infection on the tissues as a whole is a general enlargement of part of the stem, i.e., the formation of a hyperplastic gall, which is due to increase in the number of the cells and not to increase in size of the existing cells (i.e., hypertrophy). The greatest increase takes place in the xylem and phloem, the primary cortex seldom being heavily infected. Text-figure 2 shows the normal proportion of infection in each tissue. The increased rate of cell production in the phloem causes the bark covering the gall outside an infected area to become thicker than outside normal wood (Plate ii, figs. 15, 16), even when it contains no mycelium. It is, however, frequently ruptured by the rapid expansion of the tissues beneath it, and, in © addition, shows various scars left by the fruiting bodies of previous years. The phellogen is a very narrow band and is lacking over the ruptured areas. Infection does not seem to cause the death of a tissue. The Effect of Gall Formation on the Growth of Fagus. The formation of galls on the branches of Fagus seldom seems to do the tree serious injury. Since no tissues are killed and since, in most cases, there is a considerable part of the stem at the level of the gall which contains normal tissues, the passage of food materials and water up and down the stem is not unduly restricted. Very large and apparently healthy trees were observed to be heavily covered with galls (Plate i, fig. 1). In one case a large gall was observed on the main trunk of a tall living tree within a few feet of the ground. Suggested Means of Infection. A macroscopic examination shows that large branches have only old galls, never young ones. The young galls are found only on young stems, indicating that primary infection takes place only when the stem is young. It would be impossible for mycelium to penetrate the hard bark of an old stem. If an invading hypha entered through a lenticel, it would still have to cross the cortex, in which there are one to several bands of stone cells, and the phloem before it could infect the cambium, which has been shown to be the centre of infection in the gall. There is no trace of fungal mycelium in the primary xylem or pith. In the galls examined the first trace of infection occurs in the xylem and phloem of the second year’s growth. These observations suggest the following hypothesis as to how infection may take place. During the late spring and early summer, October to early December at Barrington Tops, the spores of Cyttaria mature and are blown through the air in great numbers. At the same time the young shoots of Fagus are elongating and are still covered with a somewhat hairy epidermis. Secondary thickening commences in these young shoots towards the end of the zrowing season. The spore, alighting on the epidermis of the young shoots, germinates and the germ tube penetrates the epidermis and the cortex. The BY JANET M. WILSON. 7 mycelium then probably remains dormant until the beginning of the next spring, either in the cortex or in one of the medullary rays, or, most probably, in the young cambium. When secondary growth begins in the following year, it infects the young xylem and phloem cells as they are developing, and this process goes on yearly. The mycelium also infects the cambium in a longitudinal direction. Summary. Cyttaria septentrionalis Herb. is a parasitic fungus which infects the stems of Fagus Moorei in New South Wales. Infection results in the formation of galls very varied in shape and size. Wedge-shaped areas of infection occur in the stem. Usually one side of the stem is not affected, but contains normal tissue. A gall may be the result of one or more infections and thus may be called simple or compound. The age and growth-rate of an infected area can be calculated by observing its relationship to the annual rings of the stem. The tissues infected are the primary cortex, secondary phloem, cambium, and secondary xylem. The xylem contains three groups of cells, normal elements, parenchymatous cells containing mycelium, and tracheidal cells, containing no mycelium but modified as a result of the infection of the neighbouring cells. Starch is present in the young tracheidal cells. The cambium, phloem and primary cortex consist only of normal cells and parenchymatous cells containing mycelium. A smaller area in the cortex is infected than in the xylem, but in old galls the increase in phloem tissue is proportionate to that in the xylem. The mycelium is septate, thin walled and 1- to 3-nucleate. It is both inter- and intra-cellular, and produces irregularly-shaped haustoria. It is distributed evenly throughout the tissue it invades, except just below the fruiting bodies, where it almost completely fills the cells. The haustorium approaches the nucleus and partially coils round it, causing its enlargement or lobing, though it does not destroy it. The host cells are not killed. In some eases cells appear to arise which are free of infection. Infection of the stem causes enlargement due to increase in the number of cells. This is most pronounced in the xylem and phloem, very little increase taking place in the other tissues. The bark is thicker outside infected areas because of the increase in the amount of the phloem, and is much ruptured and scarred. Galls do not appear to cause serious damage to, or restrict the growth of, the trees on which they grow. Macroscopic and microscopic examinations suggest that the mycelium from the germinating spores enters the young stem during the late spring or early summer, just before secondary thickening begins or while it is taking place. The mycelium then probably remains dormant in or near the cambium until the beginning of the second year’s growth. It then proceeds to infect the young xylem and phloem cells and continues to do so from year to year. The mycelium also travels along the cambium in a longitudinal direction. In conclusion, the writer wishes to thank Assistant Professor J. McLuckie and Miss Lilian Fraser for their interest and helpful suggestions throughout the course of this work. 8 GALLS FORMED BY CYTTARIA SEPTENTRIONALIS. Literature Cited. HERBERT, D. A., 1930.—Cyttaria septentrionalis, A new Fungus attacking Nothofagus Moorei in Queensland and New South Wales. Proc. Roy. Soc. Queensland, xli, 158-161. Wixbson, J. M., 1935.—A species of Cyttaria, apparently C. septentrionalis. Proc. LINN. Soc. N.S.W., Ix (5-6), pp. xlii-xliii. DESCRIPTION OF PLATES I-II. Plate i. 1.—Small branch of Fagus Moorei, showing numerous galls. x 0:07. 2.—Part of a branch of Fagus Moorei showing a long, narrow gall. x 0:6. 3.—Part of a branch of Fagus Moorei showing a round, short gall. x 0:6. 4a, 4b.—Two views of a compound gall. The various components of the gall are shown at A, B, C and D. a, b, c, ete., mark the places from which the sections repre- sented diagrammatically in Text-figure 1 were cut. x 0:6. 5.—Portion of a transverse section of a gall showing areas infected by Cyttaria. A. wedge-shaped area of uninfected xylem; B, infected cambium; C, annual rings; D, infected xylem. x 37. 6.—Radial longitudinal section of portion of a young stem of Fagus showing normal wood structure. x 210. 7.—Tangential longitudinal section of portion of a young stem of Fagus showing normal wood structure. x 210. Plate ii. 8.—Transverse section of portion of a gall. A, infected cells containing mycelium ; B, tracheidal cells; C, normal xylem. x 865. 9.— Tangential longitudinal section of part of an old gall showing tracheidal cells. Gols 10-12.—-Transverse sections of parts of galls showing tracheidal cells. 10, x 875; iil, 3¢ Bas WA, 3c 4', 13.—Transverse section of part of an old gall showing the loss of radial arrange- ment of the xylem. x 45. 14.—Transverse section of part of a gall showing starch grains in the young tracheidal cells. x 45. 15.—Transverse section of part of a normal stem of Fagus showing phloem (P) and phelloderm (X). x 85. 16.—Transverse section of infected phloem showing increase in number of cells due to infection. x 8d. PLATE I. N.S.W., 1937. Proc. Linn. Soc. Se > eee. ya Ghee Moorei. agus Galls on F Proc. Linn. Soc. N.S.W., 1937. PLATE II. Sections of galls on Fagus Moorei. ENTOZOA FROM THE AUSTRALIAN HAIR SEHAL. By T. Harvey JOHNSTON, Professor of Zoology, University of Adelaide. (Twelve Text-figures. ) [Read 31st March, 1937.] In January, 1923, Professor F. Wood Jones, F.R.S., led a small biological party which visited Pearson Island, lying about twenty-five miles off the west coast of Hyre’s Peninsula, South Australia. Amongst the material obtained were some entozoa collected by Professor J. B. Cleland from the Australian hair seal, Arctocephalus forsteri (Lesson). No species of parasite has, as yet, been recorded from our pinnipeds. Amongst the ectozoa known to occur on the hair seal may be mentioned a Pediculid, probably an undescribed species of Antarctophthirius or Hchinophthirius. The entozoa referred to in this paper belong to three species, namely, a cestode, Diphyllobothrium arctocephalinum, n. sp.; a nematode, Contra- caecum osculatum (Rud.); and an echinorhynch, Corynosoma australe, n. sp. The types of the new species have been deposited in the South Australian Museum, Adelaide. DIPHYLLOBOTHRIUM ARCTOCEPHALINUM, nN. sp. Figs. 1-7. In the intestine of Arctocephalus forsteri there was found a tangled mass of cestodes whose separation resulted in some fragmentation. A specimen bearing a scolex was 17 cm. long, the terminal 5 centimetres bearing eggs. A fragment of another strobila was about 44 cm. in length, approximately 40 cm. of it being ovigerous. If one matched these two fragments according to the sizes of their segments and their reproductive condition, the total length of an unbroken strobila would be not less than 54 cm., of which more than 40 cm. would probably be egg-bearing. Segments which had just become ovigerous were nearly one milli- metre long and 5 mm. broad, and sufficiently overlapping the succeeding proglottis to give a slightly serrate margin to the strobila. In strongly contracted strobilae the serrations were much more pronounced. Segments in the mid-region of the scolex-less strobila, mentioned above, were about 5 mm. wide and 2°5 to 3:1 mm. long, whilst those near the posterior end measured 6 mm. in width by 3:7 mm. in length. Another fragment, 36 mm. long, possessed a markedly crinkled margin and all its segments were egg-bearing, but they were considerably wider and shorter anteriorly, 6 mm. and 1-5 mm. respectively, than in the corresponding portion of the other strobila. The length gradually increased to 3 mm. in segments at the end of specimen, the breadth becoming 8 mm. Hence, at first sight, there appeared to be two species represented in the material, but the anatomy was similar and the differences in dimensions were due no doubt to the state of muscular contraction. The scolex was narrower than the succeeding segments, but, when viewed laterally, was seen to be at least twice as thick as the neck region. The dimensions varied according to the state of contraction. When relaxed the breadth was F 10 ENTOZOA FROM AUSTRALIAN HAIR SEAL, 0-65 mm. and the length from the tip to the posterior end of the bothrial groove was 1:5 to 2 mm., the very thin edge of one bothrium slightly overlapping the other (figs. 1, 2). The maximum dorsoventral thickness was 0:75 ecm. The groove in some specimens extended back above the earliest segments. In one scolex the bothria were rather wider and the groove shorter, the organ being 0-95 mm. in breadth, 2:0 mm. in length, with a thickness of 1:5 mm. (fig. 3), the anterior extremity thus being almost round when viewed laterally (fig. 4). There is a very short unsegmented neck, but since the bothrial grooves enter it, this region should perhaps be regarded more correctly as merely the narrowed Figs. 1-7.—Diphyllobothrium arctocephalinum. 1, 2, Scolex, face and lateral views; 3, 4, a larger scolex, face and lateral views; 5, segment in which the uterus has just become egg-bearing, ventral; 6, mature segment, ventral (scale above); 7, portion of transverse section of mature segment to show relation of various glands and ducts. (Figs. 1-5 drawn to scale indicated below Fig. 4.) References to lettering.—aev, ? accessory excretory vessel; b, bothrium; bm, base- ment membrane; c, cirrus; cya, common genital aperture; cs, cirrus sac; cu, cuticle; d, tissue at side of scolex, between bothria; dev, dorsal excretory vessel; Im, longi- tudinal musculature; m, medulla; ov, ovary; p, boundary (dotted) of vitelline zone; rs, receptaculum seminis; sec, subcuticular cells; sclm, subcuticular longitudinal muscle fibres; t, testis; tm, transverse muscles; wu, uterus; wa, uterine aperture; v, vagina; va, vaginal aperture; vev, ventral excretory vessel; vs, vesicula seminalis; vt, vitelline glands. BY T. HARVEY JOHNSTON. 11 portion of the scolex. The breadth of this part is from 0-7 to 1:9 mm., with a thickness of 0-3 to 0-6 mm. The common genital opening lies in the midline ventrally at, or just behind, the mid-length of the segment. The opening is a transverse or rounded slit, according to the degree of retraction or protrusion of the cirrus. Into the posterior wall of the genital atrium there opens the much smaller slit-like vaginal aperture, whose walls are well chitinized. Behind these openings is the tocostome or uterine aperture situated a little to one or other side of the median line (or sometimes in the mid-line) as a transverse slit at whose narrow base the metraterm terminates. In whole mounts the mid-region of each ripe or maturing segment shows the presence of differentiated tissue, apparently medulla, in front of the cirrus sac and extending almost to the anterior end of the proglottis. A series of short transverse grooves or folds are commonly associated with this region, but no differentiated organs were noticed there. Transverse sections reveal the presence of a thick cuticle below which is a narrow, well-defined, less deeply staining, basement membrane, succeeded by sub- cuticular structures, the very large elongate fusiform cells being a marked feature. The sub-cuticular longitudinal muscle fibres are fairly well marked, but the transverse fibres are very minute. The cortex is occupied largely by the abundant vitellaria arranged in a single row dorsally and ventrally. The main longitudinal musculature forms a wide zone, the individual fibres being powerful and arranged more or less in small groups not completely separated to form distinct bundles. The transverse muscles are much less deeply staining. Dorso-ventral fibres are weakly developed. The medulla is relatively very narrow and contains many ecaleareous corpuscles. It is occupied largely by the testes, ovary and uterus. The main excretory canals are remote from the margins of the strobila, both have a wavy course, and the narrower dorsal vessel lies nearer to the median line of the segment. Both sets of canals have muscle fibres in their walls. Transverse canals are absent, but small sinuous branching canals pass from the main channels into the tissues. Sometimes these branches are large and, when seen in transverse section, resemble the main canals in size. In addition to the canals just referred to, there is, on either side, lying in the middle of the medulla just inwardly from the level of the dorsal excretory canal, a very definite canal with cuticular walls and abundant fine longitudinal fibres (apparently muscular). It has a sinuous course like the other vessels and appears to be a supplementary excretory canal, since communication with other systems has not been traced. The ovarian lobes may extend laterally to the vicinity of these canals and actually overlie them dorsally. The tissue surrounding them is more differentiated than that around the ordinary excretory ducts. Their position suggested that they might be the two vasa deferentia, but the failure to trace any connection with the vesicula seminalis seems to negative the suggestion. The testes did not stain in whole mounts, but were obvious in sections, though the state of fixation of the material was not sufficiently good to allow one to study these organs satisfactorily. They are very numerous and occupy most of the medulla in the region where they occur, and they tend to approach its upper border. Their boundary is much less sharply defined than that of the vitellaria. They measure 0:03—0:046 mm. in diameter, these dimensions being based on their appearance in transverse and horizontal sections. They are restricted to two definite testicular fields which are widely separated in the mid-region of the segment, but which join to form a very narrow band near the anterior margin. The testicular and vitelline zones seem to coincide, except laterally, where the 12 ENTOZOA FROM AUSTRALIAN HAIR SEAL, medulla is absent. The yolk glands lie above and below the testes and occur almost to the lateral margin of the segment. A considerable pyriform area with its base in the posterior part of the proglottis is devoid of both these glands, but is occupied in its hinder half largely by the mature uterus. Above the anterior portion of the uterus, as well as in front of that organ, is the large, elliptical, rather thick-walled, vesicula seminalis, about 0:23 mm. long and 0-015 mm. wide, lying somewhat obliquely. From it there issues a short narrow ejaculatory duct surrounded by the large muscular, circular, or rather spherical, cirrus sac whose outer boundary is ill-defined. This sac is ventral from the vesicula. The everted cirrus is about 0:1 mm. long and 0:05 mm. in diameter, narrowing towards its free end. There is a definite atrium when the organ is fully retracted, the male pore lying in front of the vaginal aperture which is located on its posterior wall. The vagina is well chitinized in the vicinity of the genital pore and passes backwards a very short distance and then upwards below the cirrus sac, becoming suddenly widened and thrown into a number of very thin-walled convolutions in a horizontal plane, but these coils do not extend very far on either side of the midline as the organ makes its way posteriorly immediately below the uterus, close to whose ventral wall it lies pressed. Just in front of the ovary, the vagina forms a rather large receptaculum which is twisted or curved and extends below and just behind the ovarian bridge to become connected with the fertilizing duct by a very narrow short canal. The ovary does not stain readily in whole mounts, and is best studied in sections. It lies in the posterior portion of the segment, closely behind the uterus. The main mass on either side is of a delicate branching structure whose branches may unite to form a reticulum as they radiate outwardly and forwards. The lobes extend practically to the testiculo-vitelline region and tend to occupy the upper portion of the medulla, whereas those parts nearer the midline lie ventrally in the medulla, the narrow ovarian bridge lying ventrally from the hind portion of the uterus. An oocapt appears to be present. The short oviduct is soon joined by the receptaculum and the fertilizing duct now formed is joined by the rather wide yolk duct and then surrounded by the mass of shell glands. The canal now becomes curved and bent on itself, and then suddenly widening into the uterus which passes forwards and is thrown into a series of about eight to ten trans- versely-lying coils or loops. As the organ becomes more densely packed with eggs it becomes more rosette-like and swollen and the individual loops less distinct. The terminal loop is surrounded by thickened walls as it passes directly ventrally, the metraterm ending at the uterine pore some distance behind the common genital opening, and frequently a little to one or other side of the midline. Eggs are elliptical, measuring 0-052 to 0:057 mm. long by 0-035 to 0-038 mm. wide. Yolk glands are extremely numerous and very small when seen in surface view, where they are commonly elongate in the direction transversely to the longitudinal axis of the segment. The vesicles are restricted to form two wide lateral zones which approach in the anterior half of the segment and eventually join to form a narrow band. They occupy a large part of the cortex ventrally and dorsally between the inner ends of the subcuticular cells and the main longi- tudinal musculature. They measure 0:030 to 0:057 mm. in maximum length by 0-01 to 0:013 mm. in width, and 0-030 to 0:040 mm. in dorsoventral diameter. The two main vitelline ducts pass inwards just behind, or just below, the ovarian bridge and unite to form a short common duct which enters the fertilizing duct. BY T. HARVEY JOHNSTON. 13 The present species can be separated readily from D. latum, D. cordatum, D. fuscum, and D. ranarum, by the fact that in these species the uterine loops extend forwards to the sides of the genital pore. Though our species resembles D. mansoni and D. houghtoni in this feature, it differs from them in the arrange- ment of the loops. From D. houghtoni it differs also in the distribution of the testicular and vitelline fields, but it resembles D. mansoni in these respects. Baylis (1929) stated that in D. mansoni the very numerous testes were not arranged in distinct lateral fields, but Faust’s figure (1930) indicates that they are. The form of the scolex and uterus, as well as the position of the genital pore, differentiate D. arctocephalinum from D. reptans and D. ranarum as described by Meggitt (1924; 1925). The shape of the scolex and of the neck region distinguishes our species from D. cordatum, D. mansoni, and many others. In D. decipiens the uterine loops are few and do not form a rosette. The dimensions of the strobila distinguish the Australian species from the small species described from southern seals. The position of the common genital pore in relation to the length of the segment differentiates the species from nearly all others, since in D. arcto- cephalinum it lies either at, or behind, the midlength, whereas in others it is situated in front. The presence of the modified tissue extending forwards along the midline from the genital pore is a conspicuous feature in cleared, stained or unstained preparations. The dimensions of the eggs are different from those of all other species whose descriptions are available. The species which seems most nearly related anatomically is D. mansoni, but the main points of difference have been mentioned above. No cestode has been identified previously from Australian pinnipeds, though many are known from antarctic and subantarctic species. The keys to species given by Meggitt (1924), Baylis (1929) and Sprehn (1932) have been consulted. CONTRACAECUM OSCULATUM (Rud.). This widely distributed nematode was represented by a young female specimen which exhibited the characteristic structure of the lips and the abundant fine striations at the anterior end. The species is known from northern seals as well as from several species which occur in the Subantarctic and Antarctic. It had not previously been recorded from Australian seals. CoRYNOSOMA AUSTRALE, n. sp. Figs. 8-12. This minute parasite of Arctocephalus forsteri measures about 3:5 mm. in length, though specimens were examined ranging from 3 to 4 mm. Both sexes are similar in size and general form. The anterior body forms a rounded disc- like structure about 1:3 mm. in diameter, more or less flattened ventrally but arched dorsally, this region bearing very numerous, small, regularly arranged, spines. The rest of the body narrows rapidly and then becomes cylindrical for the last third of the total body-length where the diameter is 0-:35-0-4 mm. The posterior end is rounded and is provided in both sexes with two circlets of spines (total 28-30) which are much larger than those on the rest of the body, and, as in other species of the genus, they give rise to triangular projections of the cuticle. Small spines similar to those on the dorsal and ventral surfaces of the dise are present on the ventral surface of the anterior part of the posterior body, the terminal quarter or fifth of the body-length being devoid of them except for the terminal group. The two best-known species, both occurring in eared seals (amongst other hosts) in the northern hemisphere, are C. semerme (Forsk.) and 14 ENTOZOA FROM AUSTRALIAN HAIR SEAL, C. strumosum (Rud.). The Australian parasite resembles the former in general form and size, but the distribution of the small spines is more like that in C. strumosum where, however, from more than a half (Meyer’s figure, 1932) to two-fifths (Ltihe’s figure, 1911) of the body-length ventrally is devoid of them. The ratio of the diameter of the disc to that of the cylindrical posterior body (based on figures published by Liihe and by Meyer) is about 2-4:1 in the case of C. strumosum; about 2:1 in C. semerme; and 3:1 in C. australe. The ratio fie a HA a i (MS Vill Figs. 8-12.—Corynosoma australe. 8, ventral view of male; 9, lateral view of male; 10, posterior end of male; 11, posterior end of female (dorsal view); 12, rostellar hooks belonging to one longitudinal row and marked i-xiii according to their position from the free end of the proboscis. (Figs. 8 and 9 are drawn to the scale indicated beside 8; 10 and 11 to scale above 11.) References to lettering.—b, bursa: cd, cement duct; cg, cement glands; ls, most posterior spine on ventral surface; ms, muscular sac (‘‘markbeutel’’) ; p, penis; uw, uterus; v, vagina; vd, vas deferens. BY T. HARVEY JOHNSTON. 15 of the length of the disc to the total body-length is about 1:2-3—2-6 in C. strumosum; 1:1-3-1:6 in C.. semerme; and 1:1-4 in C. australe. C. strumosum measures about 5 to 6 mm., but sometimes reaching 9 mm. in length; while C. semerme is only about 3 mm. (3-5 mm.). The arrangement of the caudal spines in C. australe resembles that in C. constrictum as figured by Van Cleave (1918) and quite unlike that in C. semerme, where they are very abundant and the series joins up with the ventral body spines. The proboscis in C. australe is about 0-7 mm. long, narrowed in its anterior third, but widening to 0:2 mm. behind its mid-length and then narrowing only slightly towards its base. The proboscis length is thus about one-fifth that of the body, but in C. strumosum it is less than one-sixth, and in C. semerme it is more than one-quarter. The form of the organ in (©. australe is rather slender, as in C. strumosum. There are 18 longitudinal rows of hooks, 13 to 14 in each row, a total of about 240. In C. strwmosum there are also 18 rows, but each has 10 to 12 hooks; in C. semerme there are 22 to 24 rows each with 12 to 13 hooks. The hooks in C. australe are differentiated, the first four in each row being rather long, narrow, and pointed, the free portion measuring about 0:04 mm. in each case, while the basal part which lies in the proboscis is about 0:03 mm. in the first hook, increasing in succeeding hooks to become as long as the free portion in the fourth. From the fifth to tenth, the projecting portion is larger and more powerful, and the base as long as, or slightly longer than, the free part, but there is little, if any, increase in the length of the free portion (0:042 mm.; base 0:045 mm.). The eleventh, twelfth and thirteenth hooks (and fourteenth, if present) in each row are small and diminish slightly in length (0:025-0:023 mm.) and possess little or no basal portion. The arrangement of the hooks and their relative sizes are more like those of C. strumosum than those of C. semerme. The proboscis sheath is double-walled, long and narrow (1:1 mm. by 0-25 mm.). The ganglion is in the vicinity of its mid-length. The lemnisci are thin, narrow structures each about half the length and breadth of the rostellar sheath. The delicate net-like lacunar system in the skin is typical of members of the genus. The testes, each 0:04 mm. in diameter, are arranged one just a little more anteriorly than the other in that part of the body which contains the dise. The three pairs of narrow cement glands have an arrangement and form very like that in Corynosoma semerme. The lower end of the combined cement gland of each side is considerably swollen to form a fusiform structure. The ejaculatory duct opens into a short pointed penis projecting into an extensive bursa with folded walls when introverted. There is a large muscular sac (‘“markbeutel’’). The male system closely resembles that of C. semerme as described by Liihe (1911) and Bieler (1914). In the female, the uterus is long, narrow, and thick-walled, terminating in a short muscular folded vagina which appears to be made up of three short sections. The female aperture is terminal. In some specimens a ‘copulation cap” of cement was present resembling that figured by Van Cleave for C. constrictum. Eggs from the body cavity measure 0-075 to 0-085 mm. by 0-023 to 0:029 mm., with a short broad polar process at each end of the middle shell like that figured by Liihe and by Meyer. In addition to C. semerme and C. strumosum, the following species have been described from seals: C. hamanni Linst. (C. antarcticum Rennie, C. sipho Raill. and Henry), and C. bullosum lLinst. from the Antarctic and Subantarctic; C. reductum lLinst., a rather large immature form from the Arctic; and 16 ENTOZOA FROM AUSTRALIAN HAIR SEAL. C. ambispinigerum Harada from a Japanese Phoca sp. An account of the last- named is not available for comparison. Corynosoma sp. is the only species of the genus recorded from Australian waters, having been reported by Johnston and Deland (1929) from a dolphin, Delphinus delphis, in St. Vincent’s Gulf. Lthe (1911) mentioned having met with C. semerme in an immature condition once in Otaria jubata and once in Spheniscus demersus. The former is one of the South American seals and the latter is the South African penguin. C. strumosum is known from northern European seals and cormorants; Ball (1930) identified it from the Californian harbour seal (Phoca richardii), and Meyer (1932) stated that it occurred in Phalacrocoraxz capensis in former German South-west Africa. NOTES ON GENUS CALLIPHORA (DIPTERA). CLASSIFICATION, SYNONYMY, DISTRIBUTION AND PHYLOGENY. By G. H. Harpy. (One Text-figure.) [Read 31st March, 1937.] The difficulties met in taxonomic study are responsible for considerable differences in the treatment of Australian species of Calliphora. Many promising studies have proved inadequate to meet the needs of the research worker, and although progress is being made in the study of details of morphology, so far there is no generally accepted scheme for their classification. Actually the work was undertaken first by Johnston and Hardy in 1922, but hardly any progress could be made owing to the lack of a suitable method of treating the terminalia. The problem was taken up again in later years by myself, but in the meanwhile material had been sent to Malloch, resulting in a paper that the late EH. W. Ferguson (These PROCEEDINGS, lii, 1927, p. xxiv) considered would solve the problem. Some progress in the taxonomy of Australian Calliphoras was made in my paper of 1930, followed by another in 1932. The first of these brought considerable adverse comment at the time, but the attitude I had taken up in my treatment was subsequently acknowledged as leading somewhere. I do not think, however, that it was sufficiently recognized that the specific identities I had given rested largely on field observations which are difficult to set down in print. There were certain biological features arising from my studies, and I concluded that there are units in the Australian Calliphoras that cannot be isolated on terminalia alone, as far as yet known, but can be ascertained on colour and small structural characters that remain consistent for the species, not grading from one to another as at first would be supposed. These cases are represented by C. rufipes Macq. and fallax Hardy; by C. augur Fab. and nociva Hardy; by C. tibialis Macq. and perida, a new species described below. I have not found any area where the first two meet, but the distributions of the others overlap. The arrangements of the species within this genus, given by Professor W. S. Patton (1935) and by myself, are at variance. Patton makes three main groups based on the type of terminalia the species exhibit. On the other hand, as will be seen below, this is not so very different from my arrangement, the differences lying mainly in the position where the dividing lines are to be drawn. The true relationship will be gathered when all features of the fly are considered phylo- genetically, and I would be in agreement with Professor Patton if he were to limit his view on affinities and if he did not make the development of the terminalia cover the whole species. There can be no doubt that Professor Patton, in arranging his studies along the line he has taken, is making a very big step in advance in our understanding of terminalia, but it is my impression that he carries his conclusions to a stage that is a too liberal rendering of his discoveries. A comparison of our respective methods of classification is to be gathered in the following list, where I have marked with an asterisk (*) those species in which I have an intimate knowledge of terminalia. The list is only complete as far as G 18 NOTES ON GENUS CALLIPHORA, the subgenus Proekon. The remainder has been so confused in literature that I am unable at present to give a satisfactory account of the species concerned. Subgenus ApbIcHosIA Surcouf ochracea-group. *ochracea Schiner nigrithorax Malloch Subgenus CALLIPHORA Desvoidy erythrocephala-group *eyrthrocephala Meigen. (introduced) Subgenus NEOPOLLENIA Brauer stygia-group *stygia Fabricius *qustralis Boisduval *laemica White canimicans-group *canimicans Hardy *beszeit Hardy auriventris Malloch sternalis-group *sternalis Malloch *deflexra Hardy rufipes-group *rufipes Macquart *fallax Hardy *milleri, n. sp. *fulvicoxa Hardy sp. (from Western Australia) tibialis-group *tibialis Macquart *perida, n. sp. Subgenus PROEKON Surcouf augur-group *augur Fabricius *nociva Hardy centralis-group *centralis Malloch *falciformis Hardy macleayi Malloch *fuscofemorata Malloch Subgenus Ones1a Desvoidy dispar Macquart australica Malloch and others These three sections form the erythro-- cephala-group of Patton. Together with fuscofemorata, these two sections form the canimicans- group of Patton. Together with australica Malloch,,. these four sections form the augur- group of Patton. Forms not yet dealt with by Patton mostly come here, but probably would be placed in the augur-group by him, or some separated into another section, canimicans-group, or elsewhere. Key to groups and species in genus Calliphora (combining Patton’s leading discoveries). 1. Eyes hairy. Strut of aedeagus free.* Ovipositor long. Abdomen yellowish. ADICHOSIA.—ochracea-group ...... 10: * Patton states, under ochracea, that the strut is not free but “‘the end is attached to membrane’. This must be an error, for on fresh material the struts will slip out of their membraneous sockets quite readily, as in those of stygia. i a 10. 11. 16. 18. il®s BY G. H. HARDY. 19 Strutotsaed caplusetree Ovi posiLonplone mer oisiaiericeee eae eco 3 Strut of aedeagus fixed to other parts by membrane throughout its whole length. Ovipositor possibly; ralwayse Shontwe eee eee eee eee 4 IBIUNEH SPECIES He ee anis SFG AL can terhe aCe eee CALLIPHORA.—erythrocephala-group. (One species only, erythrocephala Meigen, introduced.) Densely tomentose and hairy species; abdomen brown ................-++ee0eee: Dita SG ISEOIGtS Eas GAS NERO ans ica NEOPOLLENIA.—stygia-group ...... 11 Densely tomentose species; abdomen brown ..................cceceeeeeececcs 5 Abdomen mothenwise scolour ed! a hyn apiece cee Ved Seis desea ied oaerd sa ease eee 8 Without secondary plates on male terminalia With secondary plates developed on male terminalia, these lying adjacent to acces- sory plates, closing the genital cavity. Ovipositor not examined .............. a-Gidio. chold ososcto. 4.0. aloraireeiacita.c 8 omeanic:olo-clacch Sic Geer cee bron eis aL sternalis-group. ...... 15 Strut reaching almost to apex of aedeagus which lies considerably to the rear of the strut. Ovipositor not examined .............. canimicans-group ...... 13 Strut short in relation to the length of aedeagus so that the tip of the aedeagus (orifice) lies noticeably beyond the apex of the strut and almost in a line with it eMOVIPOSItornd SHORE: adr eS eT RR here ae Son Ha De ehabene. ca pees 7% Abdominal segment incorporated in the terminalia, of the typical broad type. Abdomen always with yellow hairs ................ rufipes-group ...... 16 Abdominal segment incorporated in terminalia, of the narrow type (unique to group). Abdomen never with yellow hairs. ........ tibialis-group. ...... 19 Abdomen mainly yellow with a blue central area on dorsum. Ovipositor short as DIRS (AKIO WAT eg eapsye levee sure eh ot chs ee Renee eae Golo aaiee ai este see pilots Le PROEKON. ...... 9 Abdomen entirely blue, or rarely the last segment otherwise coloured ...... ? ONESIA Frons on female much wider than long. Two presutural acrostichal bristles only. By Ok BES) Choices Sta InECEeat ntl Rt rE cicnees & ei auch Ol ASIN G an ABer Gre paae Lea SRAM AL eed Om 8 augur-group Frons on female about as wide as long. Three presutural acrostichal bristles OEESEM Cnet cee re teacyroaepiekei-y oon Rete em ere eevee ies eitag Le L-aa sr cechertveed ire tere msieewer centralis-group Subgenus ADICHOSIA. Eyes on male almost contiguous. Thorax very densely covered with yellow, hiding ThewSTroOuUnd=-COTOUM 6 chs sierra eae cratic enelae io) Sess etien era a leNeh sel ane lby oda sleeberaus ochracea Schiner Eyes on male widely separated, almost as wide as on female. Thorax with a very slight whitish covering not hiding the ground colour ...... nigrithorax Malloch Subgenus NEOPOLLENIA. On the male the facets of the eyes are enlarged on the upper area and hence the eyes ATS MCOMCIEUOUS) hieteecirchcy cheueelensue reitewele ual siaoter Sus telrsnieuicn sya i jen ouenan slay cn seaitayis atevtemebcuarranattepsneyinrs 12 On the male the facets of the eyes are not enlarged above and hence the eyes are conspicuously separated. Anterior clasper on male is exceptionally long at its base, thus being about as long there as high .............. australis Boisduval Anterior clasper normal at its base, being shorter than high .... stygia Fabricius Anterior clasper long at its base, as in australis, being about as long there as its JaWed FES heer ce eee CREE prety ane uae nC RRRER OREN CLA lat nto GL ais er A IaeC uO QUANG A earch hice saute laemica White Abdomen iwatin eyelil Ome liaty; Siig seren s ciece suse sng erento weh auch ed cnsine teh anay AP Petite se wie Low ower escecatey «er eiel s 14 /Noyoloranern Walaa wie WOMlO Wy INEWIAS Solo gncpodods5oueHeouobaNGonoaDON auriventris Malloch Strut of aedeagus, at centre, conspicuously bent forwards ............ bezzii Hardy Strut of aedeagus very slightly bowed forward uniformly and without a marked HOXeTOVOLL eS Arete Bote crramoncty a OREIAenS ELORB uci e eta foe cr choles. Geo IME id ee etcas 4 eemond yee canimicans Hardy Eyes of male separated by one-eighth the width of an eye. Legs slightly stained SVL Er CD ee ceeecey avon irarenrcrewerace reeredclianres oleracea Use) ac: SHCb taal rapep tte usae Cuiren ous deflera Hardy Eyes of the male separated by one-seventh the width of an eye. Legs with the Coxaewandsremonramentinelygblackarenesrcietrcierde tenet remeronenenereiciehe sternalis Malloch Three presutural acrostichals present. Anterior coxae always yellow. Eyes of male separated by. the width of two ocelli ................--..-.- fulvithorax Hardy Only two presutural acrostichals present. Anterior coxae dark .............. il'7/ Strut of aedeagus reaching only half-way towards the orifice ........ milleri, n. sp. Strut of aedeagus reaching two-thirds the distance towards the orifice .......... 18 Eyes of the male separated by the width of two ocelli .............. fallax Hardy Eyes of the male separated by the width of only one ocellus ...... rufipes Macquart Femora entirely black, tibiae more or less reddish-brown. All pleural hairs blacik OTN ELE She ene eR Rhett Ma wen ata alle ta), ate taheahemerteieneiets cl aa Ass chal Cteret esos aire tibialis Macquart Femora never entirely black, but brown and often more or less darkened over the basal half or two-thirds. Some pleural hairs yellow ............ perida, n. sp. 20 NOTES ON GENUS CALLIPHORA, The synonymy of species in Neopollenia. Malloch referred to ten species of Neopollenia in his papers, and his distin- guishing characters are so unsatisfactory that I do not find it easy to determine their exact identity. Below I give the evidence on which I have placed his forms. Some are yet to be checked on Malloch’s original material, none of which has come before me. C. stygia—Malloch apparently had a complex under this name, judging on localities alone, for the species is unknown from New Zealand. The locality from which he illustrates the terminalia is not given, but probably this was somewhere in eastern Australia. His second reference gives “Swan River’; that, if adequately identified, must be C. australis. Only one specimen of C. stygia has ~ been captured in Western Australia, and this is recognized as being an abnormal occurrence. Malloch’s third reference is without specified locality. C. australis—The name is definitely rejected by Malloch on the view that it is either a synonym of stygia or else unrecognizable. C. fulvicoxa.—The name is accepted by Malloch, who admits having it confused under hilli. C. rufipes——This name is referred to in two places on the same page, the remarks being ambiguous. First, he proposed dropping the name in favour of his interpretation of hilli, which he erroneously claimed to be a well-established species; then he says the species was originally described from Java, and referred it to Hemilucilia, believing it to be not Australian. There is reason to suppose he did not examine the description of Pollenia rujfipes Macquart, 1835, which is the reference of the Australian species, the Javanese one being put into another genus by its author. Calliphora hili Patton (nec Malloch) .—It is advisable to state here that there is no evidence to support the view that Malloch had seen this species and Malloch’s references must be placed elsewhere. C. hilli Malloch (nec Patton).—This was possibly based originally on C. fallaz, and, as his material included three females from Eungella (Queensland), I was able to recognize that these, at least, were probably ©. fulvicoxa, which later Malloch admitted. However, he rejected the view that the other specimens he had were C. fallax. I have seen no material from his locality “Barrington Tops’. Malloch’s further reference to C. hilli occurring in New Zealand is also at fault, and I have given this a new name below. C. auriventris Malloch.— Known from a single female from the Fly River district. The description being inadequate for its recognition, the name stands in abeyance. There is known to me only one species that conforms to Malloch’s description, and the specimens are from Tasmania, suggesting that I have not identified the species with any degree of assurance. My own references under the name belong to the Tasmanian species, and the determination is probably erroneous. C. sternalis Malloch.—I believe I have placed this species successfully. The only character of importance that Malloch gives concerns the ventral plate of the terminalia, the apical sternite being conspicuously lobed, otherwise the species would have been quite unrecognizable. C. tibialis——Doubtless there is some misunderstanding in the determination of this well-recognized species, with which the original description does not agree. Brauer referred it to Neopollenia, evidently relying on Schiner’s determination, but Malloch states that Schiner has two species of villosa standing under the BY G. H. HARDY. Al name amongst his material. I have been very loath to accept the name as more than a provisional one. Patton has compared specimens with the type, and it is generally recognized under the name in Patton‘s sense. However, I have isolated one form, giving it the name perida. This new form, apparently limited to Queensland, could hardly have reached Macquart, and so the name seems warranted. C. albifrontalis Malloch, 1932.—Regarded by me as being quite unrecognizable from description, but Tillyard records it as a synonym of australis (Tillyard and Seddon, Council Sci. and Ind. Res., Pamphl. 37, 1933, p. 11, footnote). Patton claims that it is identical with fulvicora after examining the terminalia. Malloch only had two males of it and Patton does not say if one of these formed the determination of genital characters, or some other material. However, as Patton’s view so readily coincides with the description, I believe it must be correct. C. varifrons Malloch, 1932.—This is another species unrecognizable from the description. Patton states it is rufipes, but there was only one male in Malloch’s material and the description reads like australis in many respects. There is a form corresponding to rufipes in Western Australia, but this does not agree with Malloch’s description and perhaps Patton has this form confused owing to Malloch’s comparisons with his hilli. The name varifrons can have no specific standing at present, and any further data should be based on Malloch’s holotype specimen, for it is quite conceivable that he has a complex in his material. At present the name stands hardly more than a nomen nudum, and at best refers to australis with only two acrostichals, a not uncommon occurrence in the stygia-group. CALLIPHORA STYGIA Fab. Musca stygia Fab. 1781; Wiedemann 1832.—Calliphora stygia Schiner 1868; Hardy 1930; Patton 1935.—Calliphora villosa Desvoidy 1830. A fly normal to the south-eastern quarter of the Commonwealth, mainly the coastal region, including Tasmania, but also the sheep country of New South Wales and Queensland, and Sydney and Brisbane. One specimen only is known from Western Australia. It is well known to be associated with myasis, and occurs in its greatest density over the coastal region, including Adelaide and Melbourne. CALLIPHORA AUSTRALIS Boisd. Musca australis Boisduval 1835.—Calliphora australis Hardy 1930; Patton 1935. Apparently this species is confined to Western Australia, where it is associated with myasis. CALLIPHORA LAEMICA White. Musca laemica White, Dieffenbach’s Travels in New Zealand, ii, 1843, 291. (All New Zealand references to stygia must be referred here.) As far as yet known, this species is limited to New Zealand where it is associated with myasis. I have other specimens, females only, from Norfolk Island which might possibly come here. CALLIPHORA FULVICOXA Hardy. Calliphora fulvicoza Hardy 1930; Malloch 1932; Patton 1935.—C. hilli Malloch (nec Patton) in part, 1927.—C. albifrontalis Malloch 1932. I have no personal knowledge of this occurring in Western Australia, but Patton recognized it in a form that he regards, probably quite correctly, as albifrontalis. It is common in the vicinity of Brisbane and Adelaide, showing it to be possibly a north-western species in contrast with the range of C. rujipes, the two meeting in Adelaide. 22 NOTES ON GENUS CALLIPHORA, Little is known concerning the economy of this fly, but during experiments conducted by Miss Joan Cue, at the Queensland University, it was found to Ooviposit on carrion that had been retained several days, whereas C. fallax only oviposited in fresh carrion. It is unlikely that this fly will be found associated with myasis, as it is not normally reared from carrion and does not seem to be attracted to traps. CALLIPHORA FALLAX Hardy. Calliphora hili Malloch (nee Patton), in part, 1927; and in toto, 1932.— Calliphora fallax Hardy 1930; Patton 1935. This fly is only known definitely from Queensland and New South Wales, being mainly a coastal fly, but found also in the sheep country in both States, where it is associated with myasis. CALLIPHORA RUFIPES Macquart. Pollenia rufipes Macquart 1835.—Calliphora rufipes Hardy 1930; Patton 1935.— Calliphora hilli Patton 1927 (nec Malloch). The type localities given under the two original descriptions are practically identical, a few miles only separating the recorded places, and I have material before me from both. It is the common blowfly of that neighbourhood. Specimens are before me from Tasmania, Victoria and South Australia, but from no other State. Probably this species is capable of association with myasis, but the records standing under the name hilli are likely to refer to fallax, on the mainland of Australia, for the present fly seems strictly limited to the coastal region and is likely to be found in the interior only as an occasional migrant. CALLIPHORA MILLERI, 0. Sp. Calliphora hilli Malloch (nec Patton), in part only, 1927. This is the common blowfly of New Zealand that goes under the name Ailli, and I am indebted to Dr. D. Miller for specimens. I also have seen his drawings of terminalia which show quite distinctive features, the most noticeable being a superabundance of bristles on the claspers, the more gently curved strut and the much longer part lying beyond that relative to its two allies in Australia. It is also distinguishable by the eyes being placed apart slightly in excess of that found on rufipes. It is only known from New Zealand, where it is associated wita the myasis of sheep. CALLIPHORA PERIDA, Nl. Sp. Closely related to C. tibialis, from which it may be distinguished by its brown femora, typically brown but often more or less darkened from the base to about half to two-thirds the length, being very variable in this respect. The only other feature of difference that has been noted is in the pleura and anterior coxae, both, or either, having yellow hairs, the number varying. No difference has been found in the terminalia or in the width between the very closely set eyes. This fly is only known to me from Queensland, being quite plentiful around Brisbane, and occurs throughout the year, being associated during much of the winter and spring periods with the typical C. tibialis. However, between these two flies there is also a marked difference in habit, perida sporting on bushes whereas tibialis is strictly confined to the ground. Through all the years that T have been collecting and watching this fly and observing its habits, I have not found any actual joining up of the two distinguishing characters. When the BY G. H. HARDY. 23: yellow pleural hairs are present, the femora are invariably brown in the main, whereas when no yellow hairs are to be seen, no brown is noted on the femora. Hab.—Queensland. Brisbane; about 100 specimens are selected for the type series. Goondiwindi, 1 male. Southern forms of the tibialis group also need close investigation, for I have specimens strongly suggesting that a complex occurs around Adelaide, and this pc. apl. Calliphora perida, n. sp.—aed., aedeagus; a.c., anterior clasper; p.c., posterior clasper; f., forceps; a.pl., accessory plate. Note the long narrow shape of the apical tergite; the lower figure shows the parts as seen on a mount, the forceps being broader than appears in the lateral view, when unmounted. possibly new species may be extending towards Melbourne. I judge this from 2 long series taken in the two States concerned. From Sydney and from Tasmania I have seen only the typical form without marked variations. CALLIPHORA AUGUR Fab. Musca augur Fabricius 1775.—Calliphora augur Patton 1925, 1935; Hardy 1926, 1930; Malloch 1927 in part, and 1928 in part. The synonymy that stands tentatively under this species is rather extensive and it is possible the names do not all belong to the one species. On the published evidence it is not possible to attach the names to any other species known to me. The present species occurs in Tasmania, Victoria and perhaps in certain mountain areas of New South Wales as a permanent resident; it is also found in the southern coastal regions of Queensland and in the sheep country of the two latter States as a seasonal fly only. The limit of its western occurrence is not known. It is associated with myasis. CALLIPHORA NocIvA Hardy. Calliphora augur Malloch 1927 and 1928 in part only, and many references in literature.—Calliphora nociva Hardy 1932; Patton 1935. The permanent limits of this fly do not seem to extend eastward far beyond South Australia along the coastal region, but it is found in Melbourne and in Canberra. Its northern range includes Central Queensland, but apparently it does not enter the coastal region of this State, nor yet of New South Wales. It is associated with myasis. Possibly the fly is typical of the Mallee areas. 24 NOTES ON GENUS CALLIPHORA, CALLIPHORA CENTRALIS Malloch. "Caliphora centralis Malloch, 1927; Hardy 1932; Patton 1935. The range of this species is wide enough to suggest that an earlier name may be found for it. It apparently occurs through the coastal region of New South Wales, north of Sydney and far up into the Queensland coastal section. Normally it is confined to timbered country of the plains and low hills, and appears also to be a permanent resident in timbered districts of the western plains of Queensland, 300 miles inland at least. It is not attracted by carrion, nor yet caught in traps, as far as my experience goes. CALLIPHORA FUSCOFEMORATA Malloch. Calliphora fuscofemorata Malloch 1927. I have a male of this species taken from very near the type locality (caught by Miss V. Irwin-Smith) and have examined its terminalia. It would appear to be a good species that cannot be confused with any earlier description. The form is only known from the northern parts of Queensland, probably confined to the rain-forest areas, just as C. falciformis Hardy may prove to be in the more southern rain-forest areas. Judging from its terminalia, Patton was quite correct in placing it with the canimicans-group in order to be consistent in his scheme of classification. In accordance with my key to species under genus Proekon, it goes into a new group characterized not only by the terminalia, but also in having two presutural acrostichal bristles and the blue metallic margin at apex of abdominal segments, but I list it for the time being in the céentralis-complex; it does not agree with the definition of the group in the key given above. Distribution. The subgenus Adichosia is apparently limited to eastern Australia, and is represented by only two forms. Neopollenia occurs in North Queensland, Norfolk Island, New Zealand, Tasmania, and Western Australia, which seem to.mark the limits of distribution. South-eastern Australia and Tasmania are the areas of its greatest abundance. Proekon is known from New Caledonia, Australia, Tasmania, and is recorded from Timor; it may even occur in New Guinea. Queensland is the area of its greatest abundance. The coastal region of Australia, for the purpose of this account, may be divided into four quadrants, north-west, south-west, north-east and south-east. The north-western quadrant is practically an unknown region in regard to Calliphoras as no systematic collecting has been done there. As seen below, it may possibly prove to be the centre of distribution for C. fulvicora. The south-western quadrant has been under investigation during recent years. The eastern side of Australia has been well covered and is best known. The data given in this paper suggest that each quadrant has its own particular fauna in permanent residence, but is invaded periodically from some other region by species that are unable to become permanently established. ADICHOSIA. This subgenus contains only two known species and is probably the most primitive of the Calliphoras. One species, ochracea, breeds throughout the year in the rain-forests within the north-eastern quadrant, and the other, nigrithorax, in similar conditions in the south-eastern quadrant. Elsewhere it appears to be a seasonal fly only. BY G. H. HARDY. 25 NEOPOLLENIA. The south-eastern quadrant has in permanent residence, stygia, rujipes and tibialis, three of the four first-described species. In addition, this is the only area in which bezzii and deflera are known, and there are other species (Tasmanian) yet to be described. The north-eastern quadrant has canimicans, sternalis, fallax and perida. The south-western quadrant has australis and a species near rufipes. The north-western quadrant may possibly be the centre of the widely distributed fulvicoxa, for this is unknown from the south-eastern quadrant except at Adelaide, but is recorded from Perth and was described from Brisbane. But it might similarly be regarded as a Central Australian species which reaches the coast at the places mentioned. PROEKON. This subgenus: has one species each in the south-western and the south-eastern quadrants, namely, nociva and augur respectively. The former extends its permanent range eastward to the border country of Victoria. All the other species known are practically limited to the north-eastern quadrant. The two southern species may be breeding in different types of country, for nociva seems to favour the mallee areas, whereas augur occurs in the other wooded districts, the two meeting in the open plains. Those species listed in the centralis-group and which are apparently restricted to the one quadrant, seem to show a tendency to definite regional distribution within that quadrant. The majority described and undescribed may be northern flies, but centralis seems to be typical of the open forest and falciformis of the rain forests, both occurring in the southern section of the quadrant. PHYLOGENY. Patton gives some phylogenetic ideas on the development of the terminalia, which seem to be quite sound in principle but reversed in direction of presumed development. Taking into account characters other than terminalia, it would seem that Adichosia nigrithorax would be the most primitive Calliphora extant, for it has hairy dichoptic eyes. The other species in the subgenus, also with hairy eyes, has the holoptic form; this also is the form towards which the other two subgenera trend. It seems to me probable that the terminalia of Adichosia may also be of the primitive type and should be placed at the base of the Calliphorine stem. Patton, however, believes that the form of terminalia found on augur (Proekon) is the primitive one, and if this be the case we would have the curious incident of a primitive group being the one most abundant in species and the most advanced forms in the numerical minority. Also, the advanced form would have a restricted distribution, the primitive form a wide one. Making the necessary adjustment, and accepting Patton’s main theme, 2 diagram of phylogeny may be built up, as shown in the adjacent arrangement. I offer this diagram as a tentative one, but from data I have gathered by the study of other genera of the Calliphoridae, I think the general trend of the subject will be maintained. It may be shown that the ovipositor was originally long, and the strut developed from an independent thin support to become thickened and fused with other parts of the aedeagus later, the form taken in canimicans being an intermediate stage. H 26 NOTES ON GENUS CALLIPHORA. rufipes-group tibialis-group species emspecrcs sternalis-group 2 species cenimicans-group centrajis- a /spleicile's group augur= 2) spiecile's group stygia-group 3 species fuscofemorata- group ochracea-group 2 species Diagram of Phylogeny. Patton places the sternalis-group as associated with the canimicans-group for a reason unknown to me. i) Key to the Phylogenetical Considerations. Eyes hairy, primitively dichoptic at least in part. Strut free and slender. Ovipositor Ios ak = Relate RENEE ES e CAREER nen NE ARC | oat RUM aries en Nr eee JeRents Men is ran NS SPM a a ochracea-group Eyes bare, the dichoptic nature strongly tends to disappear ................. 2 Strut still free and slender and the ovipositor long .................. stygia-group Strut bound to other parts of aedeagus by membrane throughout its length. Ovi- positor probably short in all cases or perhaps in some strongly tending that WY ss ere ie ye luciseh auserscbistew oh outs strata c yeiel rolseutelas he-s:-a. ecuaybiatetreuces ieeia roimetss Utes he Weicouree suDI aoc terete cuanto some cee c etme 3 Struestillvislenderinnsscete see seo a oie canimicans-group; fuscofemorata-group StLUty DGOAGeNEA ys sh ase eeu ence el ere a oe eke EE RAdS CoP, Opera tad eis eecyote GALGkS, 6 4 Strut normally broadened but curved at least at its apex; other characters of terminaliaynormalomneceneralmtoOrimn ian tie cline nie ck noi nie ea ane 5 Strut abnormally broad and straight, only reduced at apex to a point not showing a marked trend forwards. Other parts of terminalia showing abnormal develop- ment at least in part, especially so in the development of secondary plates sags Pie OAR pees eee his eR a Oe te ee) Ay EL LN ae = Se ety See sternalis-group INfia A (Hees MCE! Wa lOEROhIN Gost odoabookocooogaduopoedousoudouoop rufipes-group Ninth tergite elongate relative to its breadth being markedly longer than broad PAE gh perry MECC ELE POO V RRC IR AT RANE EOE HOR CER ERT ORI Un RS a aes onan RA aaa tibialis-group It will be noted that I use the name fuscofemorata for a group and place it in the above key and diagram. I do not expect the name to remain permanently, for the subgenus Proekon is not yet well understood. The centralis-group and the augur-group fall into alignment with the rufipes-group and there are none known to me within the subgenus Proekon that are comparable with the tibialis-group and the sternalis-group. The subgenus Onesia stands in relation to Neopollenia very much as Proekon does, only it has more numerous species, some of which, like fuscofemorata, fall into alignment with the canimicans-group and some with the ruficeps-group. The intro- duced erythrocephala-group is in alignment with the stygia-group. References. PATTON.—Amnn. Trop. Med. and Parasit., Liverpool, xxix, 1955, 19-32. Harpy.—Bull. Ent. Res. London, xxi, 1930, 441-8; and xxiii, 1932, 549-558. MALLOCH.—Proc. Linn. Soc. N.S.W., lii, 1927, 299-335; lili, 1928, 598-617; and Ivii, 1932, 64-8. A CENSUS OF THE ORCHIDS OF NEW SOUTH WALHKS, 1937. By the Rev. H. M. R. Rupp, B.A. [Read 28th April, 1937.] The Census of New South Wales Plants, by J. H. Maiden and Ernest Betche (1916), recorded 177 species of Orchids—an increase of only four since the publica- tion of Moore and Betche’s ‘‘Handbook of the Flora of N.S.W.” in 1893. Recent research has indicated that of these 177, at least four should be deleted from the list. Mr. W. H. Nicholls has demonstrated (Vict. Nat., June, 1936) that no authentic Australian specimens of Thelymitra longifolia Forst. can be discovered, and it seems that this species is restricted to New Zealand. Mr. Nicholls has also shown (Vict. Nat., June, 1934) that Fitzgerald’s 7. megcalyptra is really conspecific with Lindley’s T. aristata. Fitzgerald’s Pterostylis striata is now generally admitted to be P. alata Reichb. f.; and the present writer is convinced that P. cucullata R.Br. has not yet been recorded in New South Wales. Brown’s name has been mistakenly bestowed upon a very different species, P. falcata Rogers. Some doubt exists in regard to a number of other species. No one has seen Diuris dendrobioides Fitzg., or Pterostylis clavigera Fitzg., for over forty years, and as no specimens are available, their validity cannot be tested. Several of ihe same author’s Prasophyllum species are also quite unknown to the present * generation, as also is his Anticheirostylis apostasioides. But of course these may yet be re-discovered, and they should therefore be retained on the list. The possibility of re-discovery is indicated in the fact that since Maiden and Betche’s Census was published 45 species and one new genus have been added to the Orchid flora of the State. Alterations in nomenclature, due either to the application of the international priority rule, the transference of species, or the deletion of genera, have become necessary since the 1916 Census. Two of these—Dendrobium elongatum Cunn., instead of D. gracilicaule F.v.M., and Bulbophyllum crassulaefolium Cunn., instead of B. Shepherdii F.v.M., are here published for the first time, on the authority of Dr. R. S. Rogers of Adelaide. In both instances Cunningham’s description preceded Mueller’s by many years. Dr. Rogers thinks Mueller may have suppressed D. elongatum to avoid confusion with a non-Australian plant of Lindley’s; but the latter’s D. elongatum is merely a synonym for his D. cymbidioides, and has no standing. With regard to Bulbophyllum crassulaefolium, Dr. Rogers writes: “Cunningham did not see the plant in flower, and apparently thought it might prove to be a Dendrobium. His coloured drawing of it is preserved at Kew Gardens; the habit of the plant agrees perfectly with Mueller’s B. Shepherdii, and the locality (Blue Mountains) is identical.” This little Bulbophyllum is very common in many parts of the State. Deleting the four species cited above from Maiden and Betche’s Census, and adding 45 to the remaining 173, we now have 218 Orchids on record for this State. In the Census list below I have only given references to descriptions, ete., in the 28 CENSUS OF ORCHIDS OF NEW SOUTH WALES, 1937, case of those which are not listed in the 1916 Census. In all other cases Maiden and Betche’s work should be consulted. I have used the following abbreviations: Fragm.—Mueller’s Fragmenta Phytographiae Australiae. Q. Fl.—_F. M. Bailey’s Queensland Flora (1902). S.A. Orch.—Dr. R. S. Rogers’ South Australian Orchids. Orch. N.S.W.—Rupp’s Guide to the Orchids of N.S.W. Bot. Reg—Curtis’s Botanical Register (London). * Denotes plants recorded since the 1916 Census. 7 Denotes an alteration in nomenclature. LIPARIS Rich. reflexa Lindl. coelogynoides F.v.M. *habenarina F.v.M., Fragm., iv, 131. See Vict. Nat., May, 19385. *Simmondsii Bail., Q. Fl., p. 1521, also Botany Bulletin, Q’land. Dept. of Agriculture, xix, 1917, p. 12 (J. F. Bailey and C. T. White); see also Aust. Orch. Review, March, 1937. OBERONIA Lindl. iridifolia Lindl. Titania Lindl. DENDROBIUM Swz. speciosum Sm. var. Hillii F.v.M. *var. gracillimum Rupp, Proc. LINN. Soe N.S.W., liv, 5, 1929. *Kesteventt Rupp, Proc. LINN. Soc N.S.W., lvi, 2, 1931; Q. Nat., March, 1935. falcorostrum Fitzg. tetragonum Cunn. aemulum R.Br. Kingianum Bidw. *var. Silcockii Bail., Q. Fl., p. 1528. yelongatum Cunn., Bot. Reg., 1839. (D. gracilicaule F.v.M., see above.) monophyllum F.v.M. *Schneiderae Bail., Q. Fl., p. 1531. cucumerinum Macleay. pugioniforme Cunn. linguiforme Swz. teretifoliwm R.Br. See Proc. LINN. Soc. N.S.W., Ix, 3-4, 1935. var. Fairfaxii Fitzg. and F.v.M. striolatum Reichb. f. Beckleri F.v.M. *tenwissimum Rupp, Proc. LINN. Soc. N.S.W., lii, 4, 1927. Mortii F.v.M. BULBOPHYLLUM Thou. rerassulaefolium Cunn., Bot. Reg.. 1839, Misc., p. 33. (B. Shepherdii F.v.M. See above.) tbracteatum Bail. (Adelopetalum brac- teatum Fitzg. See Q. FIl., p. 1539. It is generally recognized now that Bailey’s treatment of this Orchid is correct.) aurantiacum F.v.M. exiguum F.yv.M. minutissimum F.v.M. Elisae F.v.M. *Weinthalii Rogers, Trans. Roy. Soc. S. Austr., lvii, 1933. TAENIOPHYLLUM Blume. Muelleri Lindl. SARCOCHILUS R.Br. divitifiorus F.v.M. falcatus R.Br. var. montanus Fitze. *Weinthalii Bail., Q’land Agricultural Journal, xiii (1903), 346, and xxviii, Part 6 (June, 1912), 448. *Hartmanni F.v.M. Fragm., viii, 248. See Abstract Proc. LINN. Soc. N.S.W., No. 482, Aug., 1935. Fitegeraldii F.v.M. olivaceus Lindl. *spathulatus Rogers, Trans. Roy. Soe. S. Austr., li, 1927. *dilatatus F.v.M., Fragm., i, 191. See also Rogers, loc. cit. parvifiorus Lindl. Ceciliae F.v.M. Hillii F.v.M. eriochilus Fitzg. CLEISOSTOMA Blume. tridentatum Lindl. Beckleri F.v.M. ORNITHOCHILUS Wall. Hillii Benth. GEODORUM Jacks. pictum Lindl. Dipop1uM R.Br. punctatum R.Br. *Hamiltonianum (Bail.) Cheel, Proc. LINN. Soc. N.S.W., lvii, 1-2, 1923. CYMBIDIUM Swz. canaliculatum R.Br. *forma aureolum Rupp, Proc. LINN. Soc. N.S.W., lix, 1-2, 1934. *jiridifolium Cunn., Bot. Reg., 1839, Mise. 34. (C. albuciflorum F.v.M. See Rupp, loc. cit.) suave R.Br. PHAtus Lour. grandifolius Lour. (Now almost extinct in N.S.W.) CALANTHE R.Br. veratrifolia R.Br. GALEOLA Lour. cassythoides Reichb. f. Ledgeriana ¥F.v.M. BY H. M. R. RUPP. 29 EXprpocguM Gmel. nutans Lindl. GASTRODIA R.Br. sesamoides R.Br. *CRYPTANTHEMIS Rupp, Proc. LINN. Soc. N.S.W., lvii, 1-2, 1932. *Slateri Rupp, loc. cit. and lix, 3-4, 1934. CHEIROSTYLIS Blume. grandiflora Blume. SPIRANTHES Rich. sinensis (Pers.) Ames. Lindl. ) CALOCHILUS R.Br. campestris R.Br. (Doubt has been expressed in regard to this species. It is certain that in N.S.W. it was long confused with the species now known as C. cupreus Rogers. But Brown recorded it both in N.S.W. and Queensland. I believe it is much less common than was formerly supposed: but I have collected it near Bullahdelah, and have seen specimens from various districts. ) *grandifiorus Rupp, Vict. Nat., Feb., 1934, and Abstract, Proc. Linn. Soc. N.S.W., Aug., 1935. *cupreus Rogers, Trans. Roy. Soc. S. Austr., xlii, 1918. Robertsoni Benth. paludosus R.Br. THELYMITRA Forst. ixioides Swz. media R.Br. circumsepta Fitzg. aristata Lindl. (For the inclusion of Fitzg.’s TT. megcalyptra in this species see Nicholls, Vict. Nat., Oct., 19384, and for the association of T. aristata and Dendrobium Kingianum, see Rupp, Vict. Nat., Nov., 1934.) *paucifiora, R.Br., Prodromus, p. 314. nuda R.Br. *chasmogama Rogers, Trans. Roy. Soc. S. Austr., li, 1927. See also Proce. LINN. Soc. N.S.W., Ix, 3-4, 1935. carnea R.Br. Hlizabethae F.v.M. See Rogers, Trans. Roy. Soc. 8S. Austr., li, 1927. venosa R.Br. DiurRis Sm. alba R.Br. jpunctata Sm. (D. elongata R.Br.) cuneata Fitzg. spathulata Fitze. *venosa Rupp, Proc. LINN. Soc. N.S.W., li, 3, 1926, and liii, 4, 1928. dendrobioides Fitzg. secundiflora Fitzeg. tricolor Fitzg. Sheaffiana Fitze. maculata Sm. (S. australis aequalis F.v.M. bracteata Fitzg. platichilus Fitzg. aurea Sm. *palachila Rogers, S. Austr. Orchids, 1s Bs *brevifolia Rogers, Trans. Roy. Soc. S. Austr., xlvi, 1922. sulphurea R.Br. abbreviata F.v.M. pedunculata R.Br. pallens Benth. ORTHOCERAS R.Br. strictum R.Br. CRYPTOSTYLIS R.Br. ysubulata Reichb. f. (C. R.Br.) erecta R.Br. leptochila F.v.M. longifolia PRASOPHYLLUM R.Br. australe R.Br . flavum R.Br. elatum R.Br. brevilabre Hook. patens R.Br. *Rogersii Rupp, Proc. N.S.W., liii, 4, 1928. *odoratum Rogers, S. p. 15. *gracile Rogers, loc. cit., p. 14. *Frenchii F.v.M. See Pescott, Orchids of Victoria, p. 31. *Suttonii Rogers and Rees. See Vict. Nat., July, 1933; but the Barring- ton Tops record there given is a mistake. fuscum R.Br. (Mr. W. H. Nicholls has recently reviewed this species and found it to include more than one. But his treatment of the group has not yet been applied to the N.S.W. forms. Maiden and Betche recognized vars. alpinum and grandiflorum, but for the present it may be better to include all forms under the specific name.) striatum R.Br. Baueri Poir. Deaneanum Fitze. longisepalum Fitze. ae | nigricans R.Br. Ee: transversum Fitze. ansatum Fitzg. laminatum Fitze. rufum R.Br. densum Fitzg. viride Fitze. filiforme Fitzg. yArcheri Hook. (P. intricatum Stuart. See Nicholls, Vict. Nat., Oct., 1931.) *Morrisii Nicholls, loc. cit. *Hopsonii Rupp, Proc. N.S.W., lili, 4, 1928. Woollsii F.v.M. LINN. Soc. Austr. Orch., és LINN. Soc. 30 CENSUS OF ORCHIDS OF NEW SOUTH WALES, 1937, reflexrum Fitzeg. eriochilum Fitzg. fimbriatum R.Br. *acuminatum Rogers, Trans. Roy. Soc. S. Austr., li, 1927. See also Orch. INES Wise Ds Ore *Ruppii Rogers, loc. cit.; also Orch. N.S.W., p. 88. *Nublingii Rogers, loc. cit.; also Orch. ISSN Wiles dh SB ANTICHEIROSTYLIS Fitzeg. apostasioides Fitzg. Microtis R.Br. *magnadenia Rogers, Trans. Roy. Soc. S. Austr., liv, 1930. porrifolia Spreng. parviflora R.Br. *oblonga Rogers, Trans. Roy. Soc. 8. Austr., xvii, 1923. CORYSANTHES R.Br. pruinosa Cunn. fimbriata R.Br. *diemenica Lindl. (See Proc. LINN. S@Gh INESEW%5 ith, 924, LOPS. jo, Sls) undulata Cunn. (See Rogers, Trans. Roy. Soc. S. Austr., li, 1927, also refer to Proc. LINN. Soc. N.S.W., loc. cit., p. 88.) bicalcarata R.Br. unguiculata R.Br. PTEROSTYLIS R.Br. ophioglossa R.Br. *var. collina Rupp, Proc. LINN. Soc: IN.SW., liv, 5, 1929. concinna R.Br. acuminata R.Br. Baptistii Fitzg. curta R.Br. nutans R.Br. var. hispidula Fitzg. clavigera Fitzg. nana R.Br. pedoglossa Fitzg. pedunculata R.Br. *furcillata Rupp, Proc. LINN. Soc. N.S.W., lv, 4, 1930. *furcata Lindl. (See Rogers, Trans. Roy. Soc. Vict., xxviii [new series], aig) *alpina Rogers, loc. cit. *faleata Rogers, loc. cit. *pulchella Messmer, Proc. Linn. Soc. N.S.W., lviii, 5-6, 1933. grandifiora R.Br. truncata Fitzg. reflera R.Br. *revoluta R.Br. (See Proc. LINN. Soc. N.S.W., lili, 5, 1928, p. 553.) coccinea Fitzg. yalata Reichb. f. (P. praecogx Lindl., P. striata Fitzg.) obtusa R.Br. parviflora R.Br. (Maiden and Betche record var. aphylla Ewart and White. P. parviflora is so variable a species, and, in N.S.W. at least, the appearance of leaves is often so much later than the flowers, that the validity of var. aphylla seems doubtful in this State.) mutica R.Br. cycnocephala Fitze. rufa R.Br. (The group of which this species is representative calls for review, as there is considerable confusion of forms.) *nusilla Rogers, Trans. Roy. Soc. S. Austr., xlii, 1918. *var. prominens Rupp., Proc. LINN. Soc. N.S.W., lvi, 2, 1931. jMitchellii Lindl. (P. rufa var. Mit- chellit. ) Tsquamata R.Br. (2. rufa var. squamata. ) Woollsii Fitze. Daintreyana F.v.M. longifolia R.Br. barbata Lindl. CALEANA R.Br. major R.Br. minor R.Br. *Nublingti Nicholls, Vict. Nat., May, UW) Bile *SPICULABA Lindl. (Dirakaea Lindl.) irritabilis Reichb. f. Huntiana F.v.M. ACIANTHUS R.Br. caudatus R.Br. fornicatus R.Br. exsertus R.Br. freniformis R.Br. (Cyrtostylis reni- formis R.Br.) ERIocHILuS R.Br. yeucullatus Reichb. f. (H. autumnalis R.Br.) LYPERANTHUS R.Br. ellipticus R.Br. suaveolens R.Br. nigricans R.Br. *BURNETTIA Lindl. (Lyperanthus, partly.) ycuneata Lindl. (L. Burnettii F.v.M.) CHILOGLOTTIS R.Br. jreflera (Lab.) Cheel. R.Br.) trapeziformis Fitzg. formicifera Fitzg. trilabra Fitzg. Gunnii Lindl. ADENOCHILUS Hook. Nortonu Fitzg. CALADENIA R.Br. filamentosa R.Br. Patersonii R.Br. dilatata R.Br. *var. concinna Rupp, Proc. LINN. Soc. N.S:W.., lili, 5, 1928. arenaria Fitzg. concolor Fitzg. (C. diphylla BY clavigera Cunn. tesselata Fitzg. *angustata Lindl. (See Rupp, LINN. Soc. N.S.W., lvi, 5, 1931.) *alpina Rogers, Trans. Austr, li, 1927. cucullata Fitzg. testacea R.Br. carnea R.Br. *var. gigantea Rogers, Trans. Roy. SoG Se Austin Lis 1920. Proc. Roy. Soc. 8. M. BR. RUPP. alba R.Br. latifolia R.Br. dimorpha Fitzg. congesta R.Br. *tutelata Rogers, S.A. Orch., p. 30. caerulea R.Br. deformis R.Br. GLOSSODIA R.Br. major R.Br. minor R.Br. 32 AUSTRALIAN HESPERIIDAE. VI. DESCRIPTIONS OF NEW SUBSPECIES. By G. A. WATERHOUSE, D.Sc., B.E., F.R.E.S. [Read 28th April, 1937.] During part of 1936 I spent some time at the British Museum of Natural History in consultation with Brigadier W. H. Evans, who has been making a study of the species of this family for the whole world. The following new races are the result of part of my investigations in England. The types are all in the Australian Museum. The next part will contain my notes on the Australian types and their localities. TRAPEZITES PHIGALIA Hewitson. Hesperia phigalia Hew., 1868, Descriptions of 100 new species of Hesperidae, p. 32. Hewitson described this species from his own’ collection, giving as locality simply “Australia”. Kirby’s List of the Hewitson Collection mentions two specimens, but I was only able to find one, which was labelled by F. A. Heron, Hesperilla phigalia No. 2. This was a female and has been considered the holo- type. It does not quite conform to the description, as it has a very small spot in area la immediately below the large spot in 2, on the upperside of the forewing, also the underside of the hindwing is not grey, but yellowish-brown. The size given by Hewitson is slightly smaller than for his 7. eliena and slightly larger than for his 7. petalia, both described on the same page as 7. phigalia. This suggests that Hewitson was describing a male. I find it difficult to assign a type locality for the specimen in the British Museum as the underside of this specimen does not agree with any of the long series I have from South Queensland, New South Wales, Victoria and South Australia. As there is evidence that Hewitson did not obtain any of his material from New South Wales or Victoria, and the description does not apply to the South Queensland race, I can only assign the type locality as near Adelaide. There was a Hewitson specimen of TJ. petalia which bore a label Hesperilla phigalia No. 1. The holotype of 7. petalia is labelled No. 2, Kirby listing two specimens of this species in the Hewitson collection, both of which I found. TRAPEZITES PHIGALIA PHILA, N. subsp. The chief difference in this race is the decidedly pink tint on the apex of the forewing and the hindwing on the underside. In addition, the broad orange band on the upperside of the hindwing is divided by darker veins, in both sexes. These characters are only found in specimens from South Queensland. The holotype male from Stradbroke Is., caught in September, has the ring spots on the under- side of the hindwing more indistinct than three other males from the same locality. There are also one male and two females from Noosa, Qld., also caught in September, but the pink on the underside is not quite so marked as in the Stradbroke specimens. They are, however, not grey as in specimens from southern localities. [ou eo BY G. A. WATERHOUSE. MorTaSINGHA ATRALBA Tepper. Hesperilla atralba Tepper, Trans. Roy. Soc. S. Aust., iv, 1880-1, p. 33, Pl. 2, fig. 5. The holotype is a female in the South Australian Museum from Ardrossan, Yorke’s Peninsula, S. Aust., and now consists of two wings only. The male of the typical race has an inconspicuous stigma, very different from the broad stigma in males of the Western Australian races. Brigadier Evans has examined the genitalia, but so far finds nothing to warrant separating the races as distinct species. The race atralba has the spots whiter than the other races. It has two broods, but most specimens have been caught in April. I have examined the series of dactyliota Meyrick, 1888, in his collection. They consisted of two males and a female from Geraldton, W.A., and a female from Port Lineoln, S. Aust.; the latter belongs to typical atralba. Mr. Meyrick has presented one of his males to the Australian Museum, and it is now before me. They are smaller than typical atralba and, now I have seen this series, I find that those specimens from further south in Western Australia, to which I applied the name dactyliota, are distinct races. The race nila Waterhouse, 1932, from Dirk Hartog Is., W.A., in August, is the same size as dactyliota, the spots on the forewing above are slightly smaller and the hindwing beneath is yellowish-brown, unlike any of the other races. MOoTASINGHA ATRALBA ANACES, Nn. Subsp. M. atralba dactyliota, Waterhouse and Lyell, 1914, p. 196, figs. 648, 773; Waterhouse, 1932, “What Butterfly is That?”, p. 234, Pl. xxx, fig. 18. This is the largest race yet known; on the upperside the spots on the fore- wing in the male are proportionately smaller and there is rarely a spot in 2; the blotches on the hindwing are more extensive and greenish-grey. On the under- side the apex of the forewing and the hindwing have a pinkish tint and there are usually two spots in 1a on the forewing; the spots on the hindwing are less defined than in the other Western Australian races. In the female the spots on the upperside are nearly as large as in the typical race. Described from four males and one female from Hamel (R. Illidge) and five males from Waroona (G. F. Berthoud), all caught from 15th to 30th Oct., 1913. These localities are close together and somewhat south of Perth, W.A. MovTASINGHA ATRALBA ANAPUS, nN. Subsp. This race is the same size as dactyliota and nila. On the upperside the spots of the forewing are smaller than in dactyliota and that in 3 is round, those in 4 and 5 small and placed directly under one another. On the underside the apex of forewing is grey and in la there is an additional spot, the hindwing is grey and the spots are much more distinct than those of anaces. The holotype is a male from Stirling Ranges, W.A., caught in October with three other males in poor condition. One of these has the spots in 4 and 5 of the forewing much larger than in any male I have seen from Western Australia. SUNIANA LASCIVIA LASUS, nN. subsp. This is a very small northern race, the forewing in the male being less than 9 mm. and in the female less than 10 mm. The markings above are bright orange and well defined, especially that along the lower margin and end of cell, the band of the hindwing is proportionately broader than in lascivia from the south. On the underside of the forewing, the cell is broadly orange, the three subapical spots and the discal band are well marked, as is also the band on the hindwing. This race is easily distinguished from typical lascivia from New South Wales and I 34 AUSTRALIAN HESPERIIDAE, VI. Victoria by its size and more prominent markings. It approaches nearer to the race neocles Mabille, 1891, of which the type is said to come from Cooktown. Described from two males and one female from Bathurst Is., N.T., in October. SUNIANA SUNIAS SAUDA, nN. subsp. This race from Port Darwin differs from the other Australian races in being paler yellow both above and below. TELICOTA EUROTAS Felder. Pamphila eurotas Felder, Site. Akad. Wiss. Math.-Nat. Wien, x1, 1860, 462. This species differs from the others in the genus in having the uncus undivided. The race in northern New South Wales is eurychlora Lower, 1908. Mr. F. H. Taylor has sent me specimens from the Cairns District, so this added material shows that North Queensland specimens form a distinct race. The Australian Museum has specimens from Aru, which have dark orange markings on the upper- side and the markings on the underside usually more defined than in the Australian races. TELICOTA EUROTAS LACONIA, nN. Subsp. In the male, this race differs from eurychlora in having the orange markings above darker. On the forewing the three subapical elongate spots are not so definitely connected with the costal streak; the spots in 4 and 5 are smaller and the discal band from la to 4 narrower and with straighter edges, especially on the inner side. On the upperside of the hindwing the cell spot is smaller and in all specimens I have seen the broad band extends into 6. Beneath the general colour is more orange and the markings more distinct than in eurychlora. The female has the three subapical spots of the forewing quite separate from the cell spot. The holotype is from Cairns in May; three males and a female from Cairns in September, and two males and a female from the Herbert River in September. 35 THE DISTRIBUTION OF SOOTY-MOULD FUNGI AND ITS RELATION TO CERTAIN ASPECTS OF THEIR PHYSIOLOGY. By LiniaAn Fraser, M.Sc., Linnean Macleay Fellow of the Society in Botany. (Plate iii; twelve Text-figures.) [Read 28th April, 1937.] A sooty-mould colony usually consists of a number of different species growing together, as has been described in a previous paper (Fraser, 1933). The constituent fungi may be indiscriminately mixed, or may be more or less segregated. On a leaf or on adjoining leaves there may be colonies of a single species, and in other places several may be growing together. The appearance of a sooty-mould colony is determined by the dominant fungus. Capnodium salicinum, for example, forms a thin black colony. Limacinia concinna and Capnodium moniliforme form thick felt-like moulds. C. elegans forms a thin cottony mould on account of the upright nature of the hyphae. The appearance of the colony may vary with the habitat. On stems Capnodium mucronatum forms erect fascicles of hyphae up to 2 em. high. Such a mass of mycelium could not be supported on a leaf, so that epiphyllous colonies of C. mucronatum are relatively thin and consist of loosely interwoven hyphae. Sooty-moulds are found in all sorts of localities but not all the species are found throughout the whole range. Certain distinct associations are charac- teristic of sunny, shaded and densely shaded, and of dry and moist localities. In this paper an attempt is made first to interpret this distribution in nature on the basis of the physiological properties of the individual species, and secondly to examine the reason for the limitation of sooty-mould-forming fungi to the excretions of scale insects. Methods of Growth of Naturally-Occurring Sooty-Mould Fungi. A property shared by all sooty-mould-forming fungi is the ability to make use of intermittent moist conditions of the atmosphere for the purposes of growth. It is apparent that this must be a physiological factor of great importance. If a fragment of sooty-mould is kept in a damp atmosphere or in water, growth takes place at all hyphal apices (Text-fig. 1), and from broken ends (Text-fig. 2). Text-figures 1 and 2 show the amount of new growth made in 12 hours by Limacinia concinna. The walls of the new cells are light coloured and therefore easily recognizable. Text-figure 3 shows the amount of growth made in 36 hours. Living sooty-mould cells contain large quantities of an oil- like substance (A in Text-fig. 4). The amount of this substance present in the cells behind the new growth is always found to be much decreased (Text-figs. 3,5). Text-figure 5a shows a hypha as it appeared at the commencement of the growth test. The oil-like substance is present in all the cells. Text-figure 5b shows the amount of growth made in water after 12 hours, and Text-figures 5c and 5d show the amount of growth after 36 and 60 hours in water respectively. The food 36 DISTRIBUTION OF SOOTY-MOULD FUNGI, reserve is then seen to be entirely depleted. Loss of food reserve takes place progressively from the cells nearest the new growth to those furthest from it. If a sooty-mould mycelium growing under natural conditions is examined microscopically after a dewy night, evidence of fresh growth can be seen in the presence of thin-walled cells at the apices of the hyphae. Text-figs. 1-5. 1.—A hypha of Limacinia concinna showing new growth (A) from the apex after 12 hours in water. x 285. 2.—Broken hyphae of Limacinia concinna showing new growth (A) after 12 hours in water, and the jagged appearance of the broken walls (B). x 285. 3.—Hyphae of Limacinia concinna showing the amount of new growth made after 36 hours in water (A), and the reduction in the amount of oil-like substance in the old cells adjoining the new growth. x 285. 4.Cells of Limacinia concinna showing the presence of drops of an oil-like substance (Ae 3% UAW: 5.—A hypha of Limacinia concinna showing the disappearance of oil-like substance from the old cells with increase in number of new cells. 5a, original hypha. 5b, after 12 hours in water. 5c, after 36 hours in water. 5d, after 60 hours in water. x 285. Growth of a sooty-mould colony seems therefore to take place as follows: the mould cell absorbs scale-insect excretion as it is available, and stores up food materials. Then when sufficient water is available, during rain or on a dewy night, growth is made and the reserve foods are drawn upon. It is obvious that little growth can be made during hot or dry weather. The growth rate of sooty-moulds over a long period is therefore necessarily slow. This has been demonstrated in the case of Brefeldiella brasiliensis, for the growth rate of which exact data have been obtained. Twenty-two thalli of this species growing on leaves were measured at intervals. Measurements were taken always along the same two diameters at right angles. The average increase in diameter is given in Table 1. BY LILIAN FRASER. 37 TABLE 1. | Time in weeks from the commencement of the | experiment ee: 5a oe Be Bb 0 | 2 4 9 10 11 Average diameter of colony in mm. .. ots 0:87 | 0:96 1:0 12 1:24 1:27 Brefeldiella is specially suitable for such measurements as its flat thallus grows at the margin only and not in thickness, so that the total amount of growth made can be found by measuring the diameter from time to time. Exact measurements can not be made in the case of the members of the Capnodiaceae, which form mixed colonies growing in thickness as well as in diameter and from many points. The growth rate, in the field, of the members of the Capnodiaceae is faster than that of Brefeldiella. Limacinia concinna, for example, can form a thin mould over the surface of a leaf 7 x 2:5 cm. in size in two weeks during moist weather. Natural Associations of Sooty-Mould Fungi. The following situations are inhabited by characteristic associations of sooty- mould fungi. (1). Sunny open habitats where sooty-moulds are exposed to maximum heat, light and desiccation. Fungi: Capnodium salicinum, C. salicinum var. uniseptatum, C. Walteri, C. anonae (imperfect stage only), C. fuliginodes (imperfect stage only), C. australe, Atichia glomerulosa, Dematium pullulans and Cladosporium herbarum. Hosts: Bursaria spinosa (attacked by Ceroplastes destructor and Eriococcus eucalypti), Pittosporum wundulatum (Ceroplastes destructor), Eugenia sp. (Ceroplastes rubens), Hucalyptus spp. (Ctenochiton eucalypti), Leptospermum flavescens, L. scoparium, L. lanigerum (Tachardia melaleucae). (2). Habitats which are moister than (1) and are exposed to light and heat for shorter periods. Fungi: Capnodium anonae (perfect and imperfect stages), ©. anonae var. obscurum, C. fuliginodes (perfect and imperfect stages), OC. fuliginodes var. grandisporum, Limacinia concinna, Aithaloderma ferruginea, Atichia Millardeti, Caldariomyces sp. 1, Brefeldiella brasiliensis. Hosts: Ceratopetalum apetalum (attacked by Dactylopius sp.), Hlaeodendron australe (Ceroplastes destructor), Eugenia sp. (Ceroplastes rubens), Synoum glandulosum (Ceroplastes destructor), rarely Bursaria spinosa (Ceroplastes destructor). All the fungi of (1) may also occur in this association, their fructifications being characteristically larger than in more open situations. (3). Habitats which are moister than the preceding, obtaining as a rule in rain forests or in damp shady gullies where humidity is always high. (a). Exposed to sunlight for at least part of the day. Fungi: Capnodium elegans, C. mucronatum, C. moniliforme, Henningsomyces affine, Scorias philippinensis, Microzyphium sp. 1, M. sp. 2, Caldariomyces sp. 2, Atichia Millardeti. The fungi of (2) occur occasionally, those of (1) rarely. Hosts: Rain forest trees attacked by the scale insects already mentioned, especially Doryphora sassafras attacked by Aspidiotus rossi. (b). Not or rarely exposed to sunlight, often at some distance from the source of food. 38 DISTRIBUTION OF SOOTY-MOULD FUNGI, Fungi: Chaetothyrium spp., Atichia Millardeti, Trichopeltis reptans, Tricho- thallus hawaiiensis, Brefeldiella brasiliensis, Triposporium sp., Phycopsis vanillae. Hosts: Rain forest trees attacked by the scale insects mentioned above. Certain species of fungi are not often associated with each other, though occurring in the same sort of situation. In some cases several species may occur on the same leaf but their mycelium does not become mixed and the colonies remain distinct though in contact at the edges. This has been observed in the case of some species of Chaetothyrium, especially when C. fusisporum is present (Plate iii, fig. 1). In Table 2 a list is given of the species of sooty-mould fungi found growing with a selected number of types, to illustrate the associations recorded above. TABLE 2. Number of | Total Number Times of Times Type. Associated Fungi. Association Type has has been been Found. Collected. Capnodium anonae AG .. | Capnodium anonae var. obscurum 5 61 C. Walteri 21 C. salicinum aie a 3 C. salicinum var. uniseptatum 12 C. moniliforme 6 C. fuliginodes 15 C. australe 1 C. elegans 2 C. mucronatum .. 4 2 Aithaloderma ferruginea 9 Caldariomyces sp. 1 1 Caldarionyces sp. 2 .. dea Nee 10 Atichia Millardeti ; 5 Microxyphium sp. 1 a Microxyphium sp. 2 3 Chaetothyrium fusisporum il Henningsomyces affine .. 1 Limacinia concinna 6 Capnodium Walteri Shi .. | Capnodium anonae its BY ah 21 33 | C. fuliginodes ; ! 9 | C. salicinum var. uniseptatum 7 C. salicinum ae as 503 eye 3 | C. australe ie 2 | Limacinia concinna is Bs she 2 | Capnodium anonae var. obscurum 1 | Aithaloderma ferruginea ste BiG 1 Atichia Millardeti 1 Aithaloderma ferrugined .. .. | Capnodium anonae ato ac 9 42 | Atichia Millardeti we a ae 9 | Brefeldiella brasiliensis 6 | Limacinia concinna 5 Caldariomyces sp. 2 .. ae nie 3 Capnodium salicinum var. uniseptatum 3 | Microxyphium sp. 1... aes a5 3 | Henningsomyces affine 2 Capnodium moniliforme wie his 1 C. elegans 1 C. fuliginodes 1 BY LILIAN FRASER. 39 Capnodium elegans si .. | Capnodium mucronatum Ae sal C. moniliforme | C. anonae ae Scorias philippinensis .. Limacinia concinna Aithaloderma ferruginea Chaetothyrium roseosporum 10 Bee DNR Capnodium moniliforme .. | Capnodium mucronatum C. elegans C. anonae : Microxyphium sp. 1 Caldariomyces sp. 2... wie ns Atichia Millardeti no ue doe || Trichopeltis reptans Brefeldiella brasiliensis Scorias philippinensis .. Limacinia concinna a OO ol ony a Chaetothyrium roseosporum .. | Atichia Millardeti Chaetothyrium cinereum Capnodium elegans Trichopeltis reptans Chaetothyrium fusisporum eR Re bo bo Atichia Millardeti a .. | Chaetothyrium fusisporum Brefeldiella brasiliensis Aithaloderma ferruginea Trichopeltis reptans Chaetothyrium griseolum noe || Capnodium anonae C. moniliforme Phycopsis vanillae Caldariomyces sp. 2 Ah an Capnodium salicinum var. wniseptatum C. mucronatum .. C. Walteri Microxyphium sp. 1 Limacinia concinna Chaetothyrium depressum C. fuscum C. roseosporum .. C. cinereum 0.6) ou io) anoro a Cee le te tO Oe S| It has been found that Capnodium anonae is the commonest and most widespread sooty-mould species. It is found growing in many localities in all kinds of associations. This is shown in Table 2 by the number and variety of fungi associated with it. Other species are seen to be more limited in their associations. The species found growing with Capnodium Walteri, C. elegans, C. moniliforme, Aithaloderma ferruginea, Chaetothyrium roseosporum, and Atichia Millardeti are chiefly those of the same association class. Heat Resistance of Naturally-Occurring Sooty-Mould Fungi. As sooty-mould fungi show such a marked degree of natural grouping, an attempt was made to trace the cause. One probable reason seemed to be that some fungi might be more resistant to heat than others. Consequently as many sooty-mould fungi as were available were tested for their reactions to heat. Methods.—After some experimenting the following method was adopted as being simple, quick and suitable for treating large numbers of fungi at the same 40 DISTRIBUTION OF SOOTY-MOULD FUNGI, time. Fragments of the fungus to be tested were placed in four test-tubes, either dry or in water, according to whether dry or wet heat was to be used. The test- tubes were then placed in a water bath at the required temperature so that they were immersed to about half their height. The tubes were removed from the water bath after 5, 10, 20 and 40 minutes of heating. It was found that the temperature inside the tubes reached that of the water bath in approximately three and a half minutes, and this extra time was given in each case. Hanging- drop cultures were made of the treated fragments of mycelium and they were examined for signs of growth after one week. In Tables 3 and 4 the results of these experiments are given. TABLE 3. Resistance of Sooty-Mould Fungi to Moist Heat. Temperature in degrees Centigrade te ae 30 35 40 Time of treatment in minutes r 5 10 20 “40. 5 10 20 40 5 10 20 40 a Fungus. Limacinia coneinna .. Si A Be its BB B, 8 3 8 8.8 Mo — = Guenodian fuliginodes ae Be Ss an 3 8 8 8 3 8-9 8 8 Wo PA fie Walteri .. ae ae es oa 3 8 8 |) B a 8 8 8 LS S = Cipnadiun elegans... 25 ies ar ae OW Po eee Di 2 TL er Gime moniliforme 2 2 12 Lye FS] HF] |] Fr Se = Capnodi um mucronatum ae ses ous me 2 8 8 38 S&S BB 8 B 9} ML Cai um salicinum . . a0: a a Ae BS BB Bx PQ) 3 A a a Cah baton anonae.. 5 ae bi a 3 8 30 9.3} a. 8 8 2B 2 eel aie Capnonian anonae var. obscurum .. ae BG Pe RI BO A Ib | = Chieti fusisporum ite Ps an 50 a BB ood 8 ae 8 9B 2B Dy Dh ag Mideoin ferruginea a0 ba 40 ae BB BB 3 B BB SU 27 Chitin cinereum ee nie oe dic BS Bi Bo w 3 Bo QZ = = = Te a, SDeligaee LS Ae wee See 3 8 @. 3 8 Bo Bo B 8) 2) —— Trichopeltis reptans .. te a8 oh mA @ Bh. BB 3 38 38 2);—- —- — — Ghilsneh herbarum By. eye PB ry er Le Sh Ee icillium expunsum ote 4 Pi as 3 Za Dien 1 —- —- —-}- -—- The condition of the fungus after treatment is shown arbitrarily as follows: — indicates that no growth has taken place in the hanging-drop culture and the fungus is considered to be dead. 5 indicates that growth equal to that of the untreated control has taken place. 2 indicates that a fair amount of growth has taken place. 1 indicates that very little growth has taken place, only an occasional hypha being alive. BY LILIAN FRASER. 41 TABLE 4. Resistance of Sooty-Mould Fungi to Dry Heat. Temperature in degrees Centigrade. . 55 | 60 65 | 70 75 Time of treatment in minutes oO MeLO 20 40 5 10 20 40} 5 10 20 40 5) 10 20 40, 5 10 20 40 a | | | Fungus. Limacinia concinna .. x0 go Bo dS = SS = = = — Capnodium fuliginodes a on See eo eS, e Diem 1 SEE 2 AO 9 1 1— j— — — — @ipiodium Walteri .. ays Jo Be SP BS Be BB we Wes SS By al Sh ahs TL) Capnodium aiaee, a op Ga BD BON BS. Ry oe | B I I es == Capnodium moniliforme dhs eS 5 doa |B wea ay @ ak aS eh a ah a Ss SS Capnodium mucronatum % so oS OS Oo BOS SF Br Bil Ss 8 4 AB 8 4 a j= == — Gatun, salicinum ee aa BB. BB 3 @ 8 96) a} 8 98} 33 38 PRE | Od, vl a aL gc OO os Cicer ere ae eae GE anonae var. obscurum 33 3 2 8 8 Boal By Bos | 2 al — Chaetothyrium fusisporum .. oo 3 & 8 BB BB} Bs | BS 2 ee abe ee al oak al) Be a SS Chaetothyrium cinereum ae oo 8 8 8 Bis B 2B Bis BB 2B | 22 2— |j— — — — Chaetothyrium roseosporum so 3? 6B) SP Bi) BL BF By Be ey ah ab ak ah ee | ee Aithaloderma ferruginea “is no 6) Bh Be BB BB ol “9 2 2— is —_—— eH Microxyphium sp. 1 18 ee BO 2) Gale — — — am Trichopeltis reptans .. ag so 8 BB Br Bj B Bs ayy Bo ws Bw al es = — — ‘inn GD. cs 6s of 8 SO BIS BH 8) eo @ |e oy wi =a — Cladosporium herbarum rds is o 8 ae BB) DA ae Oe a Leen Lea a by a Penicillium expansum eS weed 2s) 92 eal: I a | | | The condition of the fungus after treatment is shown arbitrarily as follows: — indicates that no growth has taken place in the hanging-drop culture and the fungus is considered to be dead. 3 indicates that growth equal to that of the untreated control has taken place. indicates that a fair amount of growth has taken place. 1 indicates that very little growth has taken place, only an occasional hypha being alive. bo These tables show that there is a striking difference between the resistance shown by fungi to wet and dry heat. None of the fungi tested were able to with- stand a temperature higher than 45°C. in water, even for so short a time as 5 minutes. There does not appear to be any exact correlation between ability to resist wet heat and ability to resist dry heat. For example, Limacinia concinna can remain alive after 10 minutes’ exposure to a temperature of 40° C., wet heat, but is killed by an exposure of 5 minutes to 60° C., dry heat, whereas Capnodium J 42 DISTRIBUTION OF SOOTY-MOULD FUNGI, elegans and C. salicinum are killed after 5 minutes at 40° C., wet heat, but are resistant to 65° C., dry heat, for 40 minutes. The following classes of sooty-mould fungi can be distinguished on the basis of their resistance to dry heat: (1).—Very resistant, comprising species which can withstand a temperature of 70° C. for 40 minutes. Species: Capnodium Walteri, C. mucronatum, C. salicinum, Chaetothyrium fusisporum, Triposporium sp. TABLE 5. Resistance of Cultivated Sooty-Mould Fungi to Moist Heat. Temperature in degrees Centigrade is mls 30 35 40 Time of treatment in minutes ore as oe 5 10 20 40 5 10 20 40 yO) PAD) E40) aces | Fungus. | Medium. Capnodium salicinum .. Ee ae S Sie 2 aie Dome, 2 2 ee Oi Nine 2 1 1— — 12 (Waxes 3 3B 2 2 2 2);— — — — G [[eezte pane; 1 _ — Capnodium salicinum var. uniseptatum | Ss 8B 3.8 3 9B a 9 Si Oi ae ee | 1D 3° Poe wor aes) lege O' iO ie aoe G 2 2— — 1— — — 1—- — — Aithaloderma ferruginea S) are BB SEM Lo Ie, 3 1 — — IP 3 33 2 2 Z il | G 2 a 1 LS = 1 1— — Capnodium fuliginodes .. Ss Bo 8 BB 3. 8 8. 2B ENRAGED Fron) 1p Ss 8 BB 8 8 8 8 2B PA Ney ee oT G 3 BL Bae oe SO a ee eRe 1—- — — Capnodium Walteri S SB BB 3 3 3 BB pa et tS 1 1p [on B aS eM SCS! eee we Ol Ot moe aaah | A eae G SEDI oat Boe pee Reena 1—- — — Chaetothyrium cinereum iS) 3 3 3 B® 3 > 8 2 3 8 il all 12 Ps ee nc G il il = = Timacinia concinna NS) 3 8 3 3 BB BB 3 Bal 1 1p Pye SN — G 1 1 — Triposporium sp. S BB Bo <8} DROITS 2 12 [iets wetter) mS amt: ON NT ae DEN iD, 2 1—- — | G 38. 1- — i31i1—-_— — 1$1—- — Dematium pullulans | Ss 3 8 Be 9B} 2 1 i = == Lite ae: By BO GE plies Veto | G Bi 1B Be Bal Soe no O45 ee The condition of the fungus after treatment is shown arbitrarily as follows: — indicates that no growth has taken place in the hanging-drop culture and the fungus is considered to be dead. > indicates that growth equal to that of the untreated control has taken place. 2 indicates that a fair amount of growth has taken place. 1 indicates that very little growth has taken place, only an occasional hypha being alive. P, potato glucose solution.—S, unpurified adonite solution.—G, glucose salts solution. BY LILIAN FRASER. 43 (2).—Resistant, comprising species which can withstand a temperature of 65° C. for 20 minutes. Species: above 60° C. for more than 10 minutes. Capnodium fuliginodes, C. elegans, TABLE 6. Resistance of Cultivated Sooty-Mould Fungi C. anondae, to Dry Heat. C. moniliforme, CO. anonae var. obscurum, Aithaloderma ferruginea, Chaetothyrium roseosporum, C. cinereum, Trichopeltis reptans, Cladosporium herbarum. (3).—Not resistant, comprising species which can not withstand temperatures Temperature in degrees Centigrade 5d | 60 65 70 Time of treatment in minutes 5 10 20 40| 5 10 20 40) 5 10 20 40 5 10 20 40 1 PPS Cla wei & Fungus. Medium. | Capnodium salicinum Ss) B00, BB) FP Pa ee 12 SHOWS (ola ieeolee Aner el te oi amo al la G 21 31— /— — — Capnodium salicinum var. uniseptatum iS) BB Be By @ esr By PA BI Byes Bye) Bs By |G P 8 8 Se) Bog Th ee | G $9 LH|e GH} oOo g[— eS Se Aithaloderma ferruginea iS) 3 8 8 2 | 82 22/41 1— — |— — — — 1p Ths, lp eal | — G == | Capnodium fuliginodes NS) B Be BiB | BB B. Qill BB 83 = |— — — — 12 38.3 3 3);3 3 2—)})3 3 2 — j— — — — G sna ees Nee sake Mal Capnodium Walteri s 3 3 81.912 9 872) 2 919 Ol ===] = 12 6} jetuereine Aa ease LS al ea Lica hea tes ake |— —-—_— — G 1 — | | =e ae —— — | i Chaetothyrium cinereum S 3 3 3 Be Weal | — 12 a) 8) ah) (eal ahs al — G i mW | Limacinia concinna Ss B OB BS Bol B i ew | 1 1— — |— — — — P ab De ac | | = | | ~ SVS HL G 1 | Triposporium sp. s 88 3 IQ 2 Pil aod tei P 3 33 2/2 2 21/2 2 2 1\|—~-—— — G eal — Dematium pullulans iS) By 4 al | 1 P BBs Th ae a |— — G Bh 8) SSMS aS S048 138 88 Bw] — The condition of the fungus after treatment is shown arbitrarily as follows: — indicates that no growth has taken place in the hanging-drop culture and the fungus is considered to be dead. indicates that growth equal to that of the untreated control has taken place. indicates that a fair amount of growth has taken place. indicates that very little growth has taken place, only an occasional hypha Re po co being alive. P, potato glucose solution.—S, unpurified adonite solution.—G, glucose salts solution. 44 DISTRIBUTION OF SOOTY-MOULD FUNGI, Species: Limacinia concinna, Microxyphium sp. 1, Penicillium expansum (control). It can be seen from Table 3 that the distribution of sooty-mould fungi can not be explained by their powers of heat resistance alone, for, although the species of the non-resistant class occur in the less exposed situations in nature, others which occur in similar situations are strikingly resistant to heat, e.g., Chaetothyrium spp. Resistance of Cultivated Sooty-Mould Fungi to High Temperatures. In this series of experiments three media were used for the cultivation of the fungi, as it was thought that the composition of the medium might influence the resistance of the fungus to some extent. The media were as follows: (1) Unpurified adonite 2 gm., water 100 c.c. (S in Table 5). (2) Standard potato glucose solution (P in Table 5). (3) Glucose 2 gm., sodium nitrate 2 gm., potassium dihydrogen phosphate 0-5 gm., magnesium sulphate 0:25 gm., water 100 c.c. (G in Table 5). The fungi were grown for three weeks on glass-wool soaked with the culture medium in Petri dishes, and were then allowed to become air-dry at laboratory temperature and humidity under aseptic conditions before testing for heat resistance. The treatment adopted was the same as for the naturally-occurring sooty-moulds. The results are given in Tables 5 and 6. TABLE 7. Resistance of Sooty-Mould Fungi Grown on Media of Different Concentrations to Dry Heat. i} Temperature in degrees Centigrade oe + | 5 50 55 60 Time of treatment in minutes 8 See -. | 5 10 20 40) 5 10 20 40) 5 10 20 40! 5 10 20 40 ! | | — | Concentration | Fungus. ; Of Glucose | | in Medium. { % Caldariomyces sp. 1 | 0 Bo BF 26) A Ae ah ghey That a — — | 0:5 3 By Bik ial ab ah @ 2 —! | 2-0 SUIO Cie o ial oy ee elem Li Qe ellen 10-0 Bh 6 Pe al a a rh Ba EO 25:0 2) el le el a — — Capnodium fuliginodes 0) 3. 3 8 8 | 2 3.3/2 1—— j— — — — 0:5 38 8 9/8 2 2 2/8 2a. ijie—— 2-0 2 Ss B83 3 Ol so Waban e | | 10:0 Bh. PA 1 Se eS ES | 25-0 3 2 2— |— — — — J— — — — J — Dematium pullulans oz ae | (0) 2 1——/]2 1 = 2 -—— — — — | 0:5 22——]1— 1 —_— —_—— 2-0 ies JarS Uees alae ia is es Wale I era es 10:0 18 B22 Bl so 1 lie @ 2 |e o—— 25-0 | OSI Oa = The condition of the fungus after treatment is shown arbitrarily as follows: — indicates that no growth has taken place in the hanging-drop culture and the fungus is considered to be dead. indicates that growth equal to that of the untreated control has taken place. indicates that a fair amount of growth has taken place. indicates that very little growth has taken place, only an occasional hypha being alive. Rb & BY LILIAN FRASER. 45 The results obtained for resistance to wet heat are similar to those obtained for naturally-occurring sooty-mould species. All species except Dematium pullulans showed greater resistance on unpurified adonite media than on potato solution or glucose salts solution. From an examination of Table 7 it can be seen that this was also the case when dry heat was tested. On the whole, fungi in culture are less resistant to heating than are the same species when growing in their natural habitat. An exception to this is Limacinia concinna, which is more resistant in culture. The Effect of Altering the Concentration of the Culture Medium on the Heat Resistance of Sooty-Mould Fungi. It is well known that certain higher plants, e.g., Rhus, Peganum, ete. (see Maximov, 1929, p. 271 et seq.), which can endure long periods of desiccation unharmed, are characterized by cell sap of high osmotic pressure. The osmotic pressure of the cell sap of naturally-occurring sooty-moulds has been found to vary from 70 to 95 atmospheres. If the high osmotic pressure has any direct bearing on the heat-resisting powers of the cell, it should be possible, by raising or lowering the osmotic pressure, to increase or decrease the degree of resistance. This is most readily done by raising or lowering the concentration of the culture medium. The powers of heat-resistance of mycelium grown in solutions of various concentrations of glucose were therefore tested. Potato extract solutions were used with 0%, 05%, 2%, 10%, and 25% sugar. The fungi used in these experi- ments were Capnodium fuliginodes, Caldariomyces sp. 1, and Dematium pullulans. One set of cultures three weeks old was used for tests with wet heat. Another set of the same age was allowed to dry slowly at laboratory temperature and humidity. These were then used for tests with dry heat. In Table 7 the result is shown of experiments using dry heat. It can be seen that resistance was slightly less in media of high and low sugar concentration than in media of medium concentration in the case of Capnodium fuliginodes and Caldariomyces sp. 1. For Capnodium the optimum concentration is 0:5-2:0%, and for Caldariomyces 2-10%. In the case of Dematium pullulans low concentra- tions reduced the powers of heat-resistance to a greater extent than in the other species, but high concentrations reduced it to a lesser extent. The optimum concentration was 10%. Similar results were obtained using wet heat, but, as before, the temperature necessary to cause death was lower. It appears, therefore, that in the case of these fungi there is no direct relation- ship between osmotic pressure and heat resistance. For each species there is an optimum concentration of medium, above and below which heat-resistance falls off. A series of experiments in which different concentrations of nitrogen were used was made. The results showed that high and low concentrations reduced the heat-resistance of all species to about the same extent. Resistance of Sooty-Mould Fungi to Low Temperatures. The species of naturally-occurring and cultivated sooty-moulds which had been tested for heat-resistance were subjected to low temperatures to ascertain their powers of resistance to cold. The procedure adopted was similar to that used in the heat-resistance experiments. Pieces of mycelium were placed in test- tubes, dry, or with a little water, according to whether dry or wet temperatures were to be tested, and were partly immersed in a water bath. The temperature 46 DISTRIBUTION OF SOOTY-MOULD FUNGI, of the water bath was controlled by the addition of ice and salt. The following temperatures were used: -—15°C., 0° C., 2° C., 5°C. All the species were able to withstand these temperatures without injury, both in the wet and in the dry condition. Resistance of Sooty-Mould Fungi to Desiccation. Material of the species of fungi which had been collected for heat-resistance tests was kept at laboratory temperature and tested weekly for viability. Material of the cultivated species used in the heat tests was also treated in this way. The results are given in Tables 8 and 9. From these it can be seen that the naturally-occurring sooty-mould fungi can be grouped into the following classes on the basis of their ability to resist periods of desiccation: (1).—Very Resistant, comprising species viable after 10 weeks without water. Species: Capnodium salicinum, C. Walteri, C. mucronatum. (2).—Resistant, comprising species viable after 5 weeks without water. Species: Capnodium elegans, C. anonae, C. moniliforme, Microxyphium Spee (3).—Not Resistant, comprising species which are dead after 4 weeks without water. Species: Limacinia concinna, Chaetothyrium roseosporum, C. fusisporum, C. cinereum, Trichopeltis reptans, Aithaloderma ferruginea, Triposporium sp. It can be seen that with a few exceptions, the distribution of those species whose associations could not be explained on the basis of their powers of heat- resistance can be explained on the basis of their resistance or susceptibility to desiccation. TABLE 8. The Resistance to Desiccation of Naturally-Occurring Sooty-Mould Fungi. i Period of desiccation in weeks og |p. oa 2 3 4 5 6 if 8 9 10 11 = | os 2S | Fungus. Capnodium salicinum .. an boi, @ 3 33 3 | 3 3 3 3 3 | = Capnodium elegans oe Bee so |} oe WCB 3 2 2, 1 i ied — — Capnodium moniliforme a ed || 2 3 2 2 1 1 1}/— |}— |— | — Capnodium anonae 3 3 2 2 2, 2 2 1 | —_ — Capnodium Walteri Boy Boi BP B 3 3 3 2 2 1 }— Capnodium mucronatum Beal ne | B 3 2 2 deal cat 1 | 1 Timacinia concinna a ) 8 3. | il | Chaetothyrium fusisporum an +a | 3) | = a Chaetothyrium roseosporum 3 | 2 | = Chaetothyrium cinereum yi a | | —— Triposporium sp. ees ify al ee a | Aithaloderma ferruginea 3 | By! Bho | Trichopeltis reptans .. ae ive G3} all aoe — | | | The condition of the fungus after treatment is shown arbitrarily as follows: — indicates that no growth has taken place in the hanging-drop culture and the fungus is considered to be dead. 3 indicates that growth equal to that of the untreated control has taken place. indicates that a fair amount of growth has taken place. indicates that very little growth has taken place, only an occasional hypha being alive. m bo BY LILIAN FRASER. TABLE 9. The Resistance to Desiccation of Cultivated Sooty-Mould Fungi. 47 | | | | Period of desiccation in weeks 1 2 3 4 5 GI) ev 8 9 10 11 Fungus. Medium. | | | | Capnodium salicinum s 3 3 | 3 3 3 | 3 3 3 2 )— P 3 3 oll 8 3 2 || 2 iL 1 — i G 3 — j= — — |— — — — — a are Capnodium salicinum var. S 3 3 3 3 3 2 2 2 1 — — uniseptatum 12) 3 3 o 2 2, 2 1 G 3 2 iL ih 1 — — a — a — Capnodium fuliginodes ) 3 2) 2 2 2 2 2 2 2 2 2 1 3 3 3 3 2 2 2 2 1 1 1 G 3 3 iL — — — — aa — — — Capnodium Walteri Ss 3 3 3 3 3 2 2 2 2 2 2 P 2 1 1 il 1 1 — — -= a — G 2 2 1 1 1 — |— — — —_ — Aithaloderma ferruginea Ss 83 2 2 2 2 = = — — — — P 3 2 il = = = G 3 2 1 | — ute sae aad | Limacinia concinna N) 3 3 3 3 2 2 2 2 2 2 2 12 2 2 1 1 1 il — — —_ — — G 2 2 2 1 il Chaetothyrium cinereum .. S 3 3 3 83 3 2 2 2 2 2 2 1p 2 1 1 1 G 2 1 1 —_ — — — — —- —— -- Triposporium sp. Ss 3 3 3 3 3 2 2 2 2 2 —_ 12 3 3 2 2 2 2 il 1 1 1 — G 3 2 = — Dematium pullulans S 3 3 3 2 2 1 | P BPS Oil B) I pe coe aie cut G 3 3 3 3 3 PP i @ 2 2 2 2 | The condition of the fungus after treatment is shown arbitrarily as follows: — indicates that no growth has taken place in the hanging-drop culture and the fungus is considered to be dead. indicates that growth equal to that of the untreated control has taken place. 3 2 indicates that a fair amount of growth has taken place. 1 indicates that very little growth has taken place, only an occasional hypha being alive. P, potato glucose solution.—S, unpurified adonite solution.—G, glucose salts solution. Reaction of Individual Species of Sooty-Mould Fungi to Special Conditions of Nutrition. It appeared significant that only a limited number of species of fungi should occur in sooty-mould colonies, Penicillium spp. should be relatively unimportant. possible reasons for the paucity of these common saprophytes. and that most omnivorous moulds such as There seemed to be several Hither they might not be able to utilize “honey dew”, on which sooty-moulds grow in nature, or they might not be able to withstand the conditions of desiccation, high temperature 48 DISTRIBUTION OF SOOTY-MOULD FUNGI, and strong sunlight to which they would be subjected in a sooty-mould colony, or their growth might be prevented by the production of staling substances by the sooty-mould fungi. It was thought also that there might be two reasons why the Capnodiaceae, Atichiaceae and Trichopeltaceae are found only in sooty-mould colonies. Hither they might be restricted to “honey dew” as a source of food, or they might be too slow-growing to compete with mould fungi in any other habitat. Experiments have been recorded in an earlier paper (Fraser, 1934) which showed that the limitation of most sooty-mould-forming species in nature to the excretions of scale insects does not appear to be due to their inability to make use of different types of food materials. a. Reaction to Adonite. The exact nature of the food materials available to the sooty-mould fungi was apparently not known to previous workers. Arnaud (1911) alone referred to the composition of “honey dew’. He considered it to be a watery solution of dextrin, gums, etc. It has been shown by Dr. V. Trikojus* that the “honey dew” produced by the scale insect Ceroplastes destructor is a nearly-pure aqueous solution of adonite. A small quantity of purified adonite was made available to the writer, and preliminary experiments were made to ascertain its effect on the growth of sooty-mould fungi. The results obtained indicated that adonite was probably a specially suitable medium for the growth of sooty-mould fungi, but it did not appear to be very suitable for the growth of Penicillium. More extensive experiments were accordingly planned. Pure B.D.H. adonite of plant origin was obtained. It was thought that it might also be necessary to test adonite of scale-insect origin, so a large quantity of Ceroplastes destructor growing on a host tree, Melia Azedarach var. australasica, was collected. The insects were scraped off the host and heated until the wax melted and the adonite solution present in its meshes was liberated. This was strained off, filtered and evaporated to dryness. The residue consisted almost entirely of adonite, and it was not considered necessary to purify it. The following agars were used: (1). Unpurified adonite agar.—Unpurified adonite extracted from Ceroplastes destructor 2 gm., agar 2 gm., water 100 ec.c. (2). Unpurified adonite agar with the addition of salts—Unpurified adonite 2 gm., sodium nitrate 2 gm., magnesium sulphate 0:25 gm., potassium dihydrogen phosphate 0:5 gm., agar 2 gm., water 100 c.c. (3). Purified adonite agar.—B.D.H. adonite 2 gm., sodium nitrate 2 gm., magnesium sulphate 0:25 gm., potassium dihydrogen phosphate 0:5 gm., agar 2 gm., water 100 c.c. * Dr. Trikojus kindly made available to the writer the unpublished results of his investigations on the excretions of Ceroplastes destructor. This insect is commonly associated with sooty-moulds. It attaches itself at an early age to the leaf or twig of a host plant and remains there throughout its life, absorbing food materials by means of thin suckers called “stylets’’. It excretes a waxy covering of spongy texture, which becomes several millimetres thick. The insect also produces a watery solution, the “honey dew’, which contains certain by-products of its metabolism. The “honey dew” fills the meshes of the waxy covering and runs out on to the leaf or twig. Adonite (or adonitol) is a pentahydric alcohol of the constitution C,H,,0O,. In fresh “honey dew’’ it occurs in a concentration of 6%. BY LILIAN FRASER. 49 (4). Potato extract agar.—Sodium nitrate 2 gm., magnesium sulphate 0-25 gm., potassium dihydrogen phosphate 0:5 gm., agar 2 gm., potato extract (200 gm. potato in 1 litre of water, boiled and filtered) 100 c.c. This was used as a control. Petri dishes 9 cm. in diameter were poured with 10 c.c. of the required medium and inoculated with the species to be tested. The cultures were incubated at 25° C. in darkness for 21 days. All experiments were made in triplicate and the growth rate was obtained by measuring the diameters of the colonies in two directions at right angles three times weekly. The following fungi were chosen for experiment, as they represented the two most important groups of sooty-mould fungi, the Capnodiaceae and the Fungi Imperfecti: Capnodium fuliginodes, C. salicinum, Caldariomyces sp. 1, Aithaloderma ferruginea, Chaetothyrium griseolum (Capnodiaceae), Dematium pullulans, Penicillium expansum (Fungi Imperfecti). Penicillium was included as a control. All the fungi used were able to make a certain amount of growth on the agars on which they were tested. 30 20 [ Diameter of colony in mm. Time in days from commencement of experiment. Text-figs. 6-12. 6-12.—Graphs to show growth rates on adonite (A), unpurified adonite (S. 1), unpurified adonite with the addition of salts (S. 2) and potato extract (P) agars: 6, Caldariomyces sp. 1; 7, Chaetothyrium cinereum; 8, Penicillium expansum; 9, Aithalo- derma ferruginea; 10, Capnodium fuliginodes; 11, Capnodium salicinum; 12, Dematium pullulans. 50 DISTRIBUTION OF SOOTY-MOULD FUNGI, Unpurified adonite proved a very satisfactory source of food for all the sooty- mould fungi except Chaetothyrium. It was found more satisfactory than the control (potato extract) for Dematium (S.1 in- Text-fig. 12), Capnodium fuliginodes (S.1 in Text-fig. 10) and C. salicinum (S.1 in Text-fig. 11). The growth of Penicillium was poorer than on the control agar (Text-fig. 8). The addition of salts (S.2 in Text-figs. 6-12) to unpurified adonite made it less suitable for all the fungi except Caldariomyces (Text-fig. 7). Purified adonite was found to be less suitable for growth than unpurified adonite or potato extract (A in Text-figs. 6-12). In the case of Caldariomyces, Aithaloderma and Chaetothyrium, staling became more pronounced after 14 days, as shown by the flattening of the growth curve (Text-figs. 6, 7, 9). Potato-extract agar was well utilized by all the fungi. Penicillium, Caldariomyces, and especially Chaetothyrium (Text-figs. 6, 7, 8) made better growth on this medium than on unpurified adonite. 10 $.1 ZAP 8 $.2 7 6 5 A 4 3 2 i S 7 ll 14 ie S.1 70 = | / = / a By se 60 5.1 = 2B © 26 ae 3 ey ng Pp mt os 20 4 = A S30 5.2 16 30 sue 14 12 A 10 24 % 10 6 10 4 le 2 7 il 14 Webs) pal iF MLA LO NEL Time in days from commencement of experiment. From these experiments it appears that adonite excreted by Ceroplastes destructor is not a very suitable medium for the growth of the mould Penicillium, which is not a common constituent of naturally-occurring sooty moulds. On the BY LILIAN FRASER. 51 other hand, it was very satisfactory for the growth of all sooty-mould species tested except Chaetothyrium. It is also apparent that purified adonite was not so satisfactory as unpurified adonite. So far the nature of the “honey dew” on one scale insect only has been deter- mined, Ceroplastes destructor on Bursaria spinosa. It is quite possible that other species of scale-insect may secrete slightly different substances and that some species of sooty-mould fungi may grow particularly well on one special type of secretion. b. Staling Phenomena shown by Sooty-Mould Fungi. In the case of soil fungi the influence of the species on each other’s growth is well known. Garrett (1934) has recently summarized and extended the knowledge on this subject. Comparatively little attention, however, has been paid to the influence of other saprophytic fungi on each other in nature. Many workers, notably Brown (1923) and Pratt (1924a, 1924b) have discussed the problem of staling caused by the growth of fungi in agar media. As the fungus grows it produces decomposition products which diffuse out into the surrounding agar. These may accumulate in such quantities as to retard or finally stop the growth of the fungus itself, and to retard or stop the growth of another fungus growing near it. When a fungus is grown on nutrient agar, growth takes place as a rule at the margins only, so that a flat circular colony is produced. It has been shown by Pratt (1924a) that the agar in the centre is not depleted of food materials but contains staling substances which render it unfit for further growth. As indicated here and in an earlier paper (Fraser, 1934), sooty-mould fungi do not produce staling substances which retard their own growth to any great extent, except when the nitrogen content of the culture medium is high, or when unfavourable nitrogen compounds are present in the agar. Many sooty-mould fungi do not form flat even colonies on agar media. They may be ridged, domed or very much raised in the centre. Moderate examples of this are shown in Plate iii, figures 2 and 4, where the colonies are domed and furrowed respectively. In extreme cases the colony may become as thick as it is wide. This is due to continued growth and branching of the hyphae in the older parts, which seem to continue until all available food material is exhausted. The formation of a thick colony is especially marked on agar containing a high concentration of sugar. This method of growth furnishes additional proof that the species of sooty-moulds do not form substances which stale their own growth to any extent. There is less likelihood of the accumulation of staling substances on a leaf surface, where they could be washed off by rain, than in an agar medium. It is evident, however, that if no rain were to fall over a period of a week or more, and if sufficient dew for growth to be made were available each night, a consider- able amount of staling substances could accumulate. To obtain further light on the problem of staling reactions, sooty-mould species were grown together in pairs on thin agar media, as staling is more readily detected in thin agar than in thick. A series of experiments was made using potato glucose agar. The results so obtained were checked by an experiment in which unpurified adonite agar was used. Six possible types of reaction may result when fungi are grown together in pairs on nutrient agar: 52 DISTRIBUTION OF SOOTY-MOULD FUNGI, (1). A stops growth of B, but is not itself affected by B. (2). A decreases the growth of B, but is not itself affected by B. (3). A stops or nearly stops the growth of B, and is itself slowed down by B. (4). A and B slow down and stop each other’s growth. (5). A and B slow down each other’s growth, but do not stop, continuing to grow over each other: 5a. Mutual effect slight; 5b. Mutual effect fairly strong. (6). A and B have no mutual effect, but grow over each other with undiminished vigour. On potato dextrose agar the reactions of the pairs of fungi fall into the following classes: Class 2. A B Capnodium anonae and Penicillium expansum Class 3. A B Microzyphium sp. 1 Caldariomyces sp. 1 Dematium pullulans Aithaloderma ferruginea Triposporium sp. and Penicillium expansum : Dematium pullulans 5, Penicillium expansum eo) ” 2 29 7 2 om) Capnodium salicinum var. uniseptatum ,, Be 5 Capnodium fuliginodes PS a a Timacinia concinna Fe a Triposporium sp. Class 4. A Chaetothyrium cinereum Aithaloderma ferruginea Microxzyphium sp. 1 ” > Limacinia concinna B and Caldariomyces sp. 1 ., Dematium pullulans Triposporium sp. 39 2) LP) Caldariomyces sp. 1 » Capnodium salicinum var. uniseptatium Class 5a. A B Caldariomyces sp. 1 and Limacinia concinna Dematium pullulans », Capnodium anonae Cladosporium herbarum ;, -Aithaloderma ferruginea 4s a », Capnodium Walteri Chaetothyrium cinereum 5, Penicillium expansum Capnodium fuliginodes s, Capnodium Walteri er 5 ;, Cladosporium herbarum He 35 ;,, Capnodium fuliginodes Limacinia concinna ;, Cladosporium herbarum op 35 ,, Capnodium fuliginodes Aithaloderma ferruginea 53 0 a3 “ 33 ;, Cladosporium herbarum Penicillium expansum a a p 0 of ;, Penicillium expansum Capnodium anonae ;, Cladosporium herbarum a iA ;, Capnodium Walteri C A 5 Capnodium fuliginodes , ) 5, Dematium pullulans 5 é ;, Caldariomyces sp. 1 “r Ae 5, Capnodium salicinum var. uniseptatum Chaetothyrium cinereum 5 Dematium pullulans Microxyphium sp. 1 ;, Capnodium fuliginodes 7 s ;, Capnodium salicinum var. uniseptatum 59 Jaro Microzyphium sp. 1 P Bo ed Capnodium Walteri Cladosporium herbarum Dematium pullulans 9 Capnodium salicinum var. uniseptatum BY LILIAN FRASER. 53 Dematium pullulans ,, Capnodium Walteri ” ry s, Dematium pullulans Class 5b. A nthe 83 Caldariomyces sp. 1 and Dematium pullulans ” 99 . Limacinia concinna ” 2099 ;, Capnodium Walteri » 299 ,, Aithaloderma ferruginea . ys :, DLriposporium sp. 50 or 6 :, Capnodium salicinum var. uniseptatum ” Prey) ,, Caldariomyces sp. 1 3 0 Op 5, Microxyphium sp. 1 59 ;, Capnodium fuliginodes 5p 5. D0 :, Cladosporium herbarum Dematium pullulans ., Triposporium sp. m0 96 ;, Capnodium fuliginodes és a ,, Capnodium salicinum var. uniseptatum Triposporium sp. » dAithaloderma ferruginea - : Capnodium fuliginodes Timacinia concinna ;, Capnodium salicinum var. uniseptatum Capnodium fuliginodes ;; Chaetothyrium cinereum ” ’ .. Capnodium salicinum var. uniseptatum Class 6. A B LTimacinia concinna and Cladosporiwm herbarum Capnodium Walteri ss Dematium pullulans Chaetothyrium cinereum ;. Cladosporium herbarum Capnodium anonae #3 = 56 From this it can be seen that the majority of sooty-mould fungi cause only slight staling effects on each other. Caldariomyces sp. 1 and Microxyphium sp. 1 cause more staling than any other species. Plate iii, figure 2, shows a colony of Cladosporium growing over a colony of Capnodium anonae (Class 6). There appears to have been little or no slowing down of the growth rate of either fungus. Plate iii, figure 3, shows an example of slight staling. The growth rate of both fungi, Caldariomyces sp. 1 and Limacinia concinna, has been slowed slightly in the adjacent parts of the colonies (Class 5a). A slightly greater degree of staling is shown in Plate iii, figures 4 and 5. In Plate iii, figure 4, Capnodium fuliginodes and Caldariomyces sp. 1 are shown causing fairly strong mutual slowing in adjacent parts of the colonies. In Plate iii, figure 5, Capnodium Walteri and Caldariomyces show a similar effect (Class 5b). An example of stronger staling is shown in Plate iii, figure 6, representative of Class 4. Growth has almost entirely ceased in adjacent parts of the colonies. In Plate iii, figure 7a, is shown an example of Class 3. Limacinia concinna has caused the growth of Penicillium expansum to cease abruptly. Plate iii, figure 7b, shows the same colonies two weeks later. It can be seen that the Penicillium colony has not grown round the Limacinia colony to any extent. The Limacinia colony, on the other hand, has continued to enlarge and is growing over the edge of the Penicillium colony, but at a slightly slower rate than at the edge farthest from it. It is apparent that Penicillium is fairly strongly affected by the growth of most sooty-mould fungi. Cladosporium is scarcely affected by the growth of the members of the Capnodiaceae, Dematium is affected by some, but not at all by others. Since staling is a function of the medium, it is not possible to assume from their behaviour on potato glucose agar that the fungi will behave similarly on “honey dew”. 54 DISTRIBUTION OF SOOTY-MOULD FUNGI, Consequently a representative group of fungi comprising some found to be mutually staling, slightly staling and not staling on potato glucose agar, were grown on agar of the composition 2% unpurified adonite, 2% agar. The results showed that mutual retardation of growth by sooty-mould species on unpurified adonite is less marked than on potato glucose agar. Members of the Capnodiaceae show little or no sign of mutual effect (Class 6, Plate iii, fig. 8, Capnodium fuliginodes and Triposporium sp.; Plate iii, fig. 9, Capnodium fuliginodes and Chaetothyrium cinereum). Only those species which show the strongest effects (Class 5b) on potato glucose agar show slight retarding effects (Class 5a) on adonite agar. The growth of Penicillium is retarded more or less strongly by sooty-mould fungi on adonite agar. CONCLUSIONS. The distribution of each species of sooty-mould fungus appears to be dependent on one or more factors. All the fungi occurring together in similar positions are not limited to them for the same reasons. Capnodium salicinum, C. Walteri and, to a less extent, C. anonae are resistant both to heat and desiccation, and in nature occupy the most exposed habitats. Limacinia, Aithaloderma and Microvyphium sp. 1 are limited to favourable habitats by susceptibility both to heat and desiccation. The members of the Chaetothyrieae, Triposporium and Trichopeltis, though strongly resistant to heat, are restricted to moist localities by their susceptibility to desiccation. Capnodium elegans, C. mucronatum and C. moniliforme form a group by them- selves, since they are resistant both to heat and desiccation, yet in nature occur in rain-forest areas only. Hither they may be restricted to the excretions of certain specific scale insects of limited distribution, or they may require a very moist atmosphere for growth. These species could not be obtained in culture and, there- fore, experiments could not be made to test the hypotheses. Heat and desiccation appear to be the most important factors influencing the distribution of sooty-mould species in nature, cold evidently having no effect. The results of the tests on the heat-resisting and desiccation-resisting powers of sooty-mould species in culture largely confirm those obtained for naturally- occurring material. Several species are, however, more resistant both to heat and to desiccation in culture than in nature. It appears probable that the factors for resistance are specific to each fungus species. It appears also from the experi- ments that the composition of the media in which the fungi are grown may considerably modify their powers of resistance both to heat and to desiccation. True sooty-mould fungi are able to withstand very considerable temperatures in the dry condition but are killed quickly by exposure to moist heat. This has also been found to be the case with certain wood-destroying fungi by Snell (1923), and is known to be the case with lichens (see Smith, 1921). It seems reasonable to assume that when growing on excretions of Ceroplastes destructor most true sooty-mould fungi do not form staling substances in sufficient quantities to retard each other’s growth noticeably. Since the sooty-mould fungi do produce staling substances which retard the growth of Penicillium strongly, it seems probable that a colony of sooty-moulds, once established, could prevent to some extent the growth of Penicillium in it. It also appears likely that some of the Capnodiaceae could not invade a sooty- mould colony in which Dematium is well established, but many species, such as Capnodium anonae, could do so without difficulty. BY LILIAN FRASER. 55 Several species of sooty-moulds have been found to be mutually antagonistic in culture, notably Caldariomyces sp. 1 and Microxyphium sp. 1, and these have not been found associated in nature. Some species, therefore, which belong to the same ecological class, may not occur together because of their mutually antagonistic effect. The relative paucity of the common saprophytic moulds, of which Penicillium expansum has been taken as the type, appears to be due to a number of causes. The chief of these is probably their inability to withstand high temperatures and prolonged desiccation. Another cause may be that the composition of the food material available is not specially suitable for their growth. Finally it appears that the staling substances produced by the true sooty-mould fungi have a retarding effect on their growth. This effect may be lessened during periods of wet weather, since the staling substances would be likely to be washed out of the mould. Actually it has been found that Penicillium spp., Alternaria spp., Fusarium spp., ete., are most abundant in sooty-mould colonies in wet weather, and while this is probably largely due to the absence of strong evaporation, it may in part be due to the absence of staling substances. The limitation of most sooty-mould-forming species in nature to the excretions of scale insects appears to be due to their extremely slow growth rate. Sooty- moulds appear to be specially adapted to an epiphytic life on account of their ability to withstand heat and dryness, and to grow slowly, making use of any slight amount of water available for this purpose. It has been found by Zeller and Schmitz (1919), Asthana and Hawker (1936), Mix (1933), and others, that the growth substances produced by a fungus in culture may have the effect of increasing the sporulation of other species as well as retarding their growth. This effect has been observed in mixed cultures of sooty-mould fungi, and may be one of the reasons why, in nature, sooty-mould fungi are mostly found in a fruiting condition. Another factor which is probably of importance in this connection is the ultra-violet radiation of sunlight. Ramsey and Bailey (1930), Stevens (1928), and others, have found that ultra-violet radiation increases sporulation in fungi. SUMMARY. In nature sooty-mould fungi grow very slowly, as they can grow only during periods of damp weather. They store up an oil-like substance, which is drawn upon when growth is made. Associations of sooty-mould fungi characteristic of certain habitats are described. The powers of resistance to heat, cold and desiccation shown by a number of species are recorded, and their bearing on the distribution of the fungi in nature is discussed. The influence of different types and different concentrations of culture media on the powers of resistance to heat and desiccation of sooty-mould fungi grown in culture is described. Adonite, the chief constituent of the “honey dew” of Ceroplastes destructor, is very suitable for the growth of most sooty-mould fungi. It is not specially suitable for the growth of Penicillium. Unpurified adonite of scale-insect origin is more suitable for the growth of sooty-mould fungi than purified adonite of plant origin. Most true sooty-mould fungi do not stale potato glucose agar to any great extent for their own growth. Caldariomyces sp. 1 and Microxzyphium sp. 1 cause 56 DISTRIBUTION OF SOOTY-MOULD FUNGI. the greatest amount of staling, Capnodium anonae the least. On unpurified adonite agar, staling is even less marked than on potato glucose agar. Substances are produced by sooty-mould fungi in both media which retard the growth of Penicillium fairly strongly. Some species retard the growth of Dematium also. Literature Cited. ARNAUD, G., 1911.—Contribution 4 1l’étude des Fumagines. 2. Ann. Ecole nationale Agric. Montpellier, Sér. 2, Tome xx (iii-iv), pp. 211-330. ASTHANA, R. P., and HAWKER, L. E., 1936.—The Influence of Certain Fungi on the Sporulation of Melanospora destruens Shear, and of some other Ascomycetes. Ann. Bot., 1 (exeviii), pp. 325-344. Brown, W., 1923.—Experiments on the Growth of Fungi on Culture Media. Ann. Bot., XXXVii (cxlv), pp. 105-129. Fraser, L., 1933.—An Investigation of the Sooty Moulds of New South Wales. i. Historical and Introductory Account. Proc. LInn. Soc. N.S.W., Iviii (5-6), pp. 375-395. ,1934.—An Examination of the Sooty Moulds of New South Wales. ii. An Examination of the Cultural Behaviour of Certain Sooty Mould Fungi. JIJbid., lix (3-4), pp. 123-142. GARRETT, S. D., 1934.—Factors Affecting the Pathogenicity of Cereal Foot-Rot Fungi. Biol. Rev., 1x (3), pp. 351-361. Maximov, N. A., 1929.—The Plant in Relation to Water. Translated by R. H. Yapp. London. Mix, A. J., 1933.—F actors affecting the Sporulation of Phyllosticta solitaria in Artificial Culture. Phytopath., 23 (6), pp. 503-524. Pratt, C. A., 1924a.—The Staling of Fungal Cultures. 1. General and Chemical Investigation of Staling by Fusarium. Ann. Bot., xxxviii (cli), pp. 563-595. , 1924b.—The Staling of Fungal Cultures. 2. The Alkaline Metabolic Products and their Effect on the Growth of Fungal Spores. Jbid., xxxviii (clii), pp. 599-615. Ramsey, G. B., and Battery, A. A., 1930.—Effects of Ultra-Violet Radiation on Sporulation in Macrosporium and Fusarium. Bot. Gazg., 89 (2), pp. 113-136. SmitTH, A. L., 1921.—Lichens. SNELL, W. H., 1923.—The Effect of Heat on the Mycelium of certain Structural Timber Destroying Fungi. Amer. Journ. Botany, 10,. pp. 399-411. STEVENS, F. L., 1928.—Effects of Ultra-Violet Radiation on Various Fungi. Bot. Gaz., 86 (2), pp. 210-225. ZELLER, S., and ScHmitz, H., 1919.—Studies in the Physiology of Fungi. VIII. Mixed Cultures. Ann. Missouri Bot. Gardens, vi, pp. 183-192. DESCRIPTION OF PLATE III. Fig. 1.—Leaves of Cryptocarya glaucescens showing colonies of Chaetothyrium fusisporum (A) and C. roseosporum (B). x 0:56. Fig. 2.—Colonies of Capnodium anonae (A) and Cladosporium (B) showing no mutual antagonism. x 0°8. Fig. 3.—Colonies of Caldariomyces sp. 1 (A) and Limacinia concinna (B) showing slight mutual antagonism. x 0°8. Fig. 4.—Colonies of Capnodium fuliginodes (A) and Caldariomyces sp. 1 (B) showing fairly strong mutual antagonism. x 0:8. Fig. 5.—Colonies of Caldariomyces sp. 1 (A) and Capnodium Walteri (B) showing fairly strong mutual antagonism. x 0°8. Fig. 6.—Colonies of Caldariomyces sp. 1 (A) and Capnodium salicinum var. uniseptatum (B) showing strong mutual antagonism. x 0:8. Fig. 7a.—A colony of Penicillium expansum (B) whose growth has been checked by the growth of a colony of Limacinia concinna (A). xX 0°58. Fig. 7b.—The same colonies two weeks later showing that the colony of Limacinia concinna has continued to grow and that the colony of Penicillium expansum has remained almost stationary. x 0:8. Fig. 8.—Colonies of Triposporium sp. (A) and Capnodium fuliginodes (B) showing no mutual antagonism on unpurified adonite agar. x 0-8. : Fig. 9.—Colonies of Chaetothyrium cinereum (A) and Capnodium fuliginodes (B) showing no mutual antagonism on unpurified adonite agar. x 0°8. Proc. Linn. Soc. N.S.W., 1937. PLATE It. Colonies of Sooty-mould Fungi. ON THE HISTOLOGICAL STRUCTURE OF SOME AUSTRALIAN GALLS. By E. Ktsrer, Hon. F.R.M.S. (London), Professor of Botany, Giessen (Germany). (Fourteen Text-figures. ) [Read 28th April, 1937.] The galls of the Australian flora have been often subjected to detailed investigations—from Schrader (1863) and Rubsaamen (1894) to numerous studies of Froggatt. The interest taken in the Australian galls is founded not only on the novelty of the objects, which promise a great many details yet undiscovered, compared with the relatively well investigated European and North American galls. In addition to the descriptive studies and catalogues there are important points of view of general biology: the botanist is interested in the Australian galls because they are associated with host-plants different from those in the Huropean and North American floras; the zoologist confirms that Coccidae are responsible for a great part of the Australian galls, but these play an unimportant part in the northern hemisphere. The general cecidology has developed through the study of the galls of the European flora. The Cynipid galls of Quercus have made known a great many highly complicated morphological and histological differentiations which cannot be attained by the productions of other gall-making insects in Europe or in North America, and they overshadow the productions of other host-plants of the Hymenoptera through their variety of structure. Therefore we have long been accustomed to consider the Cynipid gall of Quercus as the chief object of the general cecidology. The questions which concern the botanist have hardly been considered in connection with the Australian Eucalyptus galls. The botanical communications are hardly more than descriptions of the exterior form of the galls. Consideration of the cytological and histological structure of the galls is completely wanting, although most important results can be expected from their investigation. Some results which concern the anatomy of the Australian galls are described lierewith, although I know very well that distance hinders me from detailed investigation of living and ontogenetic material, and so I can only touch on many important questions. A great many of the galls which I have studied belong to Coccidae. These productions are not inferior to the highly organized productions of Cynipidae, either in exterior form or in histological structure. The histological structure of the galls of Coccidae promises important and surprising results, and so I should like to recommend its study very strongly to Australian cecidologists and phytopathologists. The following pages perhaps give a few suggestions for future detailed investigations. K 58 HISTOLOGICAL STRUCTURE OF SOME AUSTRALIAN GALLS, EHpidermis. In the “inclosed” galls, 1e., in those whose epidermis develops ontogenetically directly from the epidermis of the mother organ, the epidermis is usually equal or very similar to the normal tissue. Noteworthy is often the strong upward growth of the cells, so that they take the form of narrow palisades; it sometimes happens that palisades divide themselves by pericline walls and the epidermis becomes locally a double or multiple layer; figure 1 shows part of a gall, in which the cells of the epidermis are highly developed and grow as a cushion in the fundamental tissue. Such features are not common in galls. The cuticle of many foliar galls is much thicker than the normal one. On concavely curved divisions of a coccid gall I noticed the formation of folds of the surface: there are narrow ridges consisting either of folded epidermis matter rising from the fundamental tissue (Fig. 2a) or simply of cuticle which here and there frees itself from the epidermis cells and rises in folds; under the cuticle one sees small remains of membrane, lower still the epidermis (Fig. 2b). 1 ” oe 1 UU a ‘i TTA ines | oe Wy wie “Cuticularepithel” (Damm) has been observed sometimes in the galls (Kiister). Especially strong, many-layered and varying, I have found it in many Coccid galls of the eucalypts; particularly near small wounds, but apparently also inde- pendent of such, the upper layer of fundamental tissue is cutinized; the cells become similar to the epidermis so that one seems to see two typical and strongly cutinized epidermis layers; also the third and fourth tissue layer may be cutinized (Fig. 3). An unusual form of “cuticularepithel” I have found in those leaf galls in which the growth of the fundamental tissue is impeded here and there—perhaps BY E. KUSTER. 59 through a small trauma—and a deep notch in the cushion of the gall tissue. In the surface of the gall tissue brought together one finds a cuticularepithel in further development (Fig. 4). Free galls, i.e., such as develop from the interior of the mother and whose epidermis may be considered as a new formation, do not seem to be lacking in the Coccid galls of eucalypts. It seems impossible to work on this important question without ontogenetic material. I recommend this problem for detailed studies. In galls which I supposed to be free, I have repeatedly noticed luxurious cork formation in the physiological trauma of the point of rupture. In comparison with the Quercus galls and many other features of the Huropean gall flora, I mention that the Eucalypt galls are smooth; only in one gall have I observed uni- or pluricellular, simple or rarely T-shaped, branched albuminous hairs, developed on the interior surface. I am unable to say whether they arise from a typical epidermis or from a fundamental tissue-like matter whose surface cells sometimes stretch themselves tube-like (Fig. 5). Bundles. In many Hucalyptus galls the bundles have the same loose net-like distribution which is well known from the Pontania galls and many Cynipidae productions of the Huropean flora. I have nothing remarkable to report on the structure of the delicate bundles as I have found them in many Australian galls. In several Coccid galls the development of highly differentiated and characteris- tically distributed bundles is surprising. As first example, I mention the bundles of the long processes of the well- known gall of Brachyscelis munita. In the cross section (Fig. 6) there are about 40 bundles regularly distributed and parallel to one another; one finds large bundles next to small ones, single ones next to small groups composed of 2-4 bundles. The distribution is somewhat similar to the structure of monocoty- ledonous stems; however, the frequent very striking accumulation of the bundles in the periphery is lacking. The structure of the single bundles is characterized by the collateral distribu- tion of xylem and phloem; it is difficult to determine whether small phloem divisions exist, corresponding to the intra-xylary phloem of the Myrtaceae and to the structure of the bicollateral bundles; the bundles are too small; one can, however, definitely say that sometimes isolated groups of phloem-like cells are to be found (Fig. 7) between the sclerenchyma. The orientation of the phloem is not determined by that of the bundles in the cross-section of the gall-organs; the phloem is not always orientated outwards. But when several bundles unite in a small group, the phloem of the single bundle is always orientated toward the periphery of the small group. All bundles are enveloped by bast fibres (Fig. 6). These form a ring, mostly uninterrupted round the bundles, and sometimes enclose also the above- mentioned isolated phloem-like groups (Fig. 7). The bast-fibre shoot is generally one cell-layer thick; more rarely one finds two or three layers. When the bundles unite in groups in this way, so that they touch one another, and when no fundamental tissue layers remain between them, the bundle tissues are divided from the bast-fibre layers in 2, 3 or 4 compartments; sometimes the division remains incomplete, in which case one sees a bast-fibre septum push itself only as far as the centre of the bundle tissue, 60 HISTOLOGICAL STRUCTURE OF SOME AUSTRALIAN GALLS, As second example, I take the bundles of a gall which is similar to (or identical with) the gall of Brachyscelis conica. In the urn-shaped body of the galls, several centimetres long, numerous bundles are to be seen. These are remark- able because of their richness in secondary tissues; they form radially-structured concentric or excentric masses, which enclose in the centre of growth a very small, perhaps phloem-like, cell-group. The wood-cylinder consists especially of cells arranged in regular radial rows, and is streaked by pith rays (Fig. 8). In the largest bundles the longest radii are about 20 cells long; it is difficult to demonstrate phloem beyond the xylem cylinder; in many cases the outside xylem cells touch directly fundamental tissue cells, in others a thin layer of a phloem- like tissue is to be seen. To describe the ontogeny of the bundles was impossible with my material; especially I was not able to decide whether, in the phase before me, the bundles had everywhere finished the production of secondary tissue or not. \ 1 \ ZW | “Zy } Y} vi S — Se LeD. Ta —=ew The histological structure of these bundles is characterized in the first place by the regular radial distribution of the elements. There are found the charac- teristics well known in many other wound-wood and gall-wood features (in wood = knots and “Kugeltrieben”:; Kiister, 1925). Sometimes a difference is seen between thin-walled exterior and thick-walled interior cells between which an annular ring-like boundary line is noticed, In many other cases, single broad BY E. KUSTER. 61 or narrow sectors are differentiated from the greater part of the bundles by their structure orientating their elements, not in the longitudinal axes of the bundles, but perpendicular to them. If the thickening of the bundles is anywhere impeded, contours of the wood- body arise as they are known from the carcinoma features of the trees. Every bundle which is capable of such strong growth may be considered a small stele. This form of anomalous thickening is unknown to me in other galls. Stone cells. As with the galls of many Diptera and Hymenoptera, also many of the Coccid galls are very rich in stone cells. As in those, we find also in Coccid galls stone cells of various forms and wall qualities—relatively thin and thick-walled, thickened on all or one side. Stone cells of the second species are known to the European and American cecidologists, particularly from very numerous oak galls (Weidel), also from Salix and other galls (Kiister). An ontogenetic examination of the stone cells of the Hucalypt galls from Weidel’s point of view is greatly to be desired. I was not able to determine from the material before me whether all galls provided with stone cells thickened on one side are produced by Coccids; perhaps some of them were produced by Cynipids; in any case, it is certain that stone cells thickened on one side occur also in Coccid galls. / CY / 62 HISTOLOGICAL STRUCTURE OF SOME AUSTRALIAN GALLS, I repeatedly noticed in Hucalypt galls stone cells, which were spherical or palisade-like, formed and at some points were provided with long thread-like processes (Fig. 9). It has been long known from normal and pathological anatomy that stone cells push between neighbouring cells with pointed thorn-like forms; the Australian specimens here in question were noticeable to me as the processes developed in the direction perpendicular to the surface of the gall-bearing organ and towards the strongest normal tissue growth. Very striking is the circumstance in many Eucalypt galls, that in transverse and longitudinal section the stone cells form round-contoured or spindle-like groups (Fig. 10); there is no doubt that the cells united in a group are descendants of one mother-cell. The distribution of the stone cells in the tissues of the Coccid galls follows the principle well known from many other anatomically carefully investigated galls: either the stone cells are singly placed or united in small groups in the thin-walled fundamental tissue or they form continuous zones (‘‘mechanische Mantel’) in the later phases of the cecidogenesis. One often sees thin-walled fundamental tissue become somewhat thick walled and equally lignified. Figure 11 shows some Coccid galls and their mechanical zones. From the ontogenetic point of view, especially interesting are the galls in which the larva- cavities are surrounded by abundant thin-walled tissue and the exterior layers are formed of parenchyma filled with oil receptacles. The stone-cell zones develop at the junction between the exterior and interior parenchyma; noteworthy features result, if an exaggerated growth of the exterior parenchyma compels the contour of the mechanical zone to rupture or “Verwerfung” (Fig. 11a). In some galls oil receptacles are found only beyond the thick-walled zones and are very closely accumulated; the mechanical tissue layers push themselves here and there between neighbouring oil receptacles and can enclose these imperfectly (Fig. 12). Oil Receptacles. To the most important anatomical characters of Hucalyptus belong the oil receptacles. They play a large part in the galls of Huwcalyptus. I have earlier (Kuster, 1900) demonstrated that the Eucalypt galis are differentiated greatly through the richness of their oil receptacles: I found galls containing only a few receptacles or completely lacking in them—to the latter belong several foliar galls of Eucalyptus which remind one, through the production of ‘‘emergences”, of the “Erineum populinum” among others, and which may be considered through their morphological characters—merely as conjecture—as mite galls. The size of the oil receptacles in galls often exceeds the normal. I saw, in some Coccid galls, receptacles of which the diameter was 380u; in oval receptacles the longest diameter was even 540u. On the other hand, one also meets extra- ordinary small receptacles in Eucalypt galls, and in some others large and small ones irregularly mixed. An ontogenetic examination, particularly of the small receptacles, would certainly be of great interest and promises various noteworthy additions to Fohn’s results. The position of the oil receptacles varies. I have found galls in which all layers show receptacles, so that they lay, in some parts, in 6-8 layers. I found others in which the receptacles are to be seen directly beneath the epidermis and sometimes push it out hemispherically. Sometimes the receptacles lay so compactly that only narrow tissue remains lay between them, BY EL. KUSTER. 63. The histology of the oil receptacles of Hucalyptus galls shows various notable features. Their form is sometimes determined by the growth in the neighbour- hood; between exceptionally elongated cells the receptacles assume a form in the same direction extended, sometimes like a bottle-neck. The cells of the epithelium are often very large and arched; they fill the lumina of the receptacles with ball- or tube-like forms. It would be very important to examine the physiology of those receptacles whose epithelium has become thick walled. I have never noticed sclerosis, pits, lignification in the cells of the epithelium; in one of the galls which I examined, the tissue surrounding the receptacles so perfectly devolved on sclerosis that the receptacles were almost completely enclosed by thick-walled lignified tissue (Fig. 12); however, the cells directly enveloping the lumina of the receptacles (epithelium) take no part in the sclerosis. The great abundance of receptacles in many galls suggests the importance of a comparative chemical examination of the oil which is produced in the galls and in the normal leaves of Hucalyptus (cf. Salgues, 1936). Secondary tissues. Voluminous masses of secondary tissues develop through the gall infection out of the normal cambium ring of the stems. The abnormal wood forms thick layers, the structure of which equals that of other gall-wood features and is characterized especially by the shortness of its elements. Figure 13 shows a longitudinal section of the secondary gall wood. A great part of the wood consists of thick-walled parenchyma, between which run short fibre-like elements—some- times straight, sometimes curved, rarely fork-like branched. Also secondary phloem is formed abundantly through some gall infections; sometimes I was struck by the very clear stratification; I counted 14 layers of stone cells which alternated with thin-walled phloem. Cork patches and spherical cork nests occur in the galls, as in the normal Eucalyptus organs, after local necrosis and local trauma. Necrosis; cytolysis. Dry necrosis is in some galls the result of interior suberization, through which the outward layers of gall tissues die off. Occasionally the symptoms of the dry necrosis become especially interesting through position and form and through the histological metamorphosis of the dying tissue divisions and the neighbouring layers. Figure 14 shows in the vertex of the gall a stopper-like necrotic part whose cells are very thick walled; the directly adjacent layer consists of long palisade-like cells. Lignification of tissues is by no means rare in galls (Lysenchyma—Weidel, Kiister). In the galls of Hucalyptus one meets symptoms of lignification or cytolysis very often. The cytolysis does not characterize fixed phases of the gall evolution or fixed tissues; rather, one often sees small groups of primary and of secondary gall tissues dead and lignified—similar to the case of the gummosis. Detailed examination of the phenomena seems very desirable. I am indebted to Miss Fawcett, of Melbourne, for the opportunity to examine a great number of Australian Eucalyptus galls. I offer her my best thanks for her kind assistance; she has sent me countless well preserved samples. The above comments give a report on my investigation of the material provided by Miss Fawcett. I publish them in the hope of giving my Australian colleagues suggestions for more careful investigation of the galls of Australia which have hardly been considered botanically. 64 ILISTOLOGICAL STRUCTURE OF SOME AUSTRALIAN GALLS. Literature. FouHN, N., 1935.—Zur HEntstehung und Weiterbildung der Exkretraume von Citrus medica L. und Hucalyptus globulus Kab. Osterr. Botan. Zeits., Bd. 84, p. 198. Froceatr, W. W., 1916.—A descriptive catalogue of the scale insects (‘‘Coccidae’’) of Australia. Agric. Gaz. N. S. Wales, vol. 27, p. 425. Houarp, C., 1922.—Les Zoocécidies des plantes d’Afrique, d’Asie et d’Océanie. Vol. 2. Paris. Kuster, E., 1900.—Beitrage zur Anatomie der Gallen. Flora, Bd. 87, p. 118. —, 1911.—Die Gallen der Pflanzen. Leipzig. , 1925.—Pathologische Pflanzenanatomie. 3rd edit. Jena. , 1930.—Anatomie der Gallen. Linsbauer’s Handbuch der Pflanzenanatomie. Lief. 26, Berlin. , 1935.—Die Pflanzenzelle. Jena. RUBSAAMEN, Ew. H., 1894.—Uber Australische Zoocecidien und deren Erzeuger. Berl. Entom. Zeits., Bd. 39, p. 199. SALGUES, R., 1936.—Sur Vlhuile essentielle des hampes florales d’origine parasitaire. C.R. Soc. Biol. Paris, vol. 121, p. 1074. SCHRADER, H. L., 1863.—Uber gallenbildenden Insekten in Australien. Verh. Zool.-Bot. Gesellsch. Wien, Bd. 13, p. 189. WEIDEL, F., 1911.—Beitrage zur entwicklungsgeschichtlichen und vergleichenden Anatomie der Zynipidengallen der Hiche. Flora, Bd. 102, p. 279. 65 FINAL ADDITIONS TO THE FLORA OF THE COMBOYNE PLATEAU. By EH. C. CHISHOLM, M.B., Ch.M. [Read 28th April, 1937. In These ProceEpines (1925, p. 284, 1927, p. 378, and 1934, p. 143) the writer has previously recorded the Flora found on the Comboyne Plateau with notes on the species. This final paper is a continuation of his observations, bringing the record up to the middle of 1935. CRYPTOGAMAE VASCULARES. FILICALES. HY MENOPHYLLACEAE. Hymenophyllum australe Willd.—A small fern found growing on rocks in close proximity to water and often in association with moss. The stems and branches are flanged. It does not appear to be very plentiful. Hymenophyllum tunbridgense (L.) Smith.—Found growing on rocks near running water; distinguished by the stems and branches being cylindrical without flanges. It grows generally in association with moss. POLYPODIACEAE. Dryopteris queenslandica Domin. (= Batleyi Maid. and Betche).—An inhabitant of the floor of the brushes. It closely resembles D. decomposita and D. acuminata, though the pinnules are broader. It has a creeping rhizome, but no indusium, which distinguishes it from the other two species. Diplazium japonicum (Thunb.) Bedd—A small fern usually found near running water. A fertile frond is very characteristic. The sori are arranged in diagonal lines; a row on each side of the midrib of the pinnule, and whitish in colour. Cheilanthes tenuifoia Sw.—Not common. Found in dry situations on moun- tain slopes growing on rocks, occasionally in the company of Notholaena distans. Adiantum diaphanum Bl—A maiden hair not often seen. It seems to prefer the vicinity of water, and is found growing in association with other ferns. Pteris umbrosa R.Br.—A tall fern and found in only one or two places, growing on hillsides in the brushes. Asplenium flaccidum Forst.—A rare form growing in damp situations. ANGIOSPERMAE. MoNOCOTYLEDONEAE. CYPERACEAE. Lepidosperma laterale R.Br.—One of the larger sedges, not very common, and found in cleared land in hilly situations. Carex appressa R.Br.—Grows mostly about low-lying land and often along the course of creeks. Fairly common in these localities. Carex longifolia R.Br.—This species seems to prefer cleared land on higher elevations, where it is plentiful. I 66 FLORA OF THE COMBOYNE PLATEAU, COMMELINACEAE. Aneitlema acuminatum R.Br—An inhabitant of the brushes, noticed particu- larly in the Government Forest Reserve near the Rawson Falls. It does not appear to be plentiful. DIOSCOREACEAE. Dioscorea transversa R.Br.—A climber growing at the borders of the brushes on a mixed formation. It has shield-shaped leaves and hop-like fruit. ORCHIDACEAE. Liparis reflera Lindl—A yellow orchid resembling a Dendrobium, growing on rocks in the vicinity of water. Found in association with Dendrobium Kingianum. Caladenia carnea R.Br.—A very uncommon orchid found on sandstone forma- tion and only seen on the eastern side of the Plateau. DICOTYLEDONEAE. PIPERACEAE. Piper hederaceum A. Cunn.—A climber festooning high trees. It has a large palmate, fleshy leaf and is often met with in the brushes. URTICACEAE. Elatostemma reticulata Wedd—A low-growing plant with a large fleshy reticulate leaf growing on rocky formations in damp situations in the close vicinity of running water. EHlatostemma stipitata Wedd.—This has a smaller leaf growing in the same situations as the previous species and often in association with it. LORANTHACEAE. Viscum articulatum Burm.—aA mistletoe not often seen. Found on top of a range growing on Cryptocarya Meissneri. MENISPERMACEAE. Sarcopetalum Harveyanum F.v.M.—Found growing in brush at the edge of clearings. It is of low growth, climbing over shrubby plants. Stephania hernandifolia Walp.—This is also a climber; on superficial inspec- tion it is very like the previous species and is found in the same kind of situations. The distinguishing feature is the peltately arranged stalk in this species, while in S. Harveyanum the stalk joins the leaf at the hilus close to the edge. LAURACEAE. Endiandra Sieberi Nees—This tree is rather uncommon, and instead of being widely branching, as it is on the sandstone of the coast, and moderately small, it makes its growth upwards, becoming a tall tree in the brushes with small canopy. It has a very cork-like bark, and the pale timber is of good quality. SAXIFRAGACEAE. Abrophyllum ornans Hook.—A small tree with a leaf like a Hydrangea. It seems to prefer the vicinity of water. Not often seen. LeGUMINOSAR. Castanospermum australe A. Cunn. Black Bean.—The writer has had an authentic account of this tree growing on both banks at the head of Thone Creek BY E. C. CHISHOLM. 67 as late as nine years ago, when it was felled and burnt. Although it grew here in clumps, it seems to have been restricted to the one locality, as nowhere else on the Comboyne has it been known to occur. This is a very handsome tree yielding very valuable timber. Hovea acutifolia A. Cunn.—A plant growing to 3 or 4 feet high and liking the neighbourhood of creeks. Found growing in a brush having leaves resembling Lasiopetalum in some of its species. HUPHORBIACEAE. Phyllanthus gasstroemii J. Muell.—Not often seen; the flower and fruit hang under the leaves, the fruit resembling a miniature tomato. VITACEAE. Vitis clematidea F.v.M—This is not a common grape and is only found occasionally. It does not appear to attain large dimensions as do some of its congeners. Found mostly climbing over shrubs or small trees. Cayratia japonica (Thunb.) Gagnepain.—This is a very rare form here, and was only found once. It festoons medium-sized trees and is a very graceful vine. The leaves are large and shining. It flowers and fruits at the same time, in March, April and May, though in May the flowering is finished. The crushed leaf has a nasty smell. It keeps and carries badly if not preserved in some way. In a few days, as it dries, it disintegrates, the leaves, flowers, and fruits all falling off the branches, and the small twigs, too. Cayratia sp.—This appears to have a very restricted range, being found plenti- fully in the Rawson Forest Reserve on the west of the Plateau, but seen rarely elsewhere. It seems to be fairly closely related to C. japonica, though quite distinct specifically. It is a scabrous form, the stems, pedicels and main veins of the leaves, especially on the underside, being very hairy. It is of large growth, climbing to the tops of tall brush trees, the stem attaining at the base a diameter of about 3 inches. This is apparently a new species which, up to date, has not been identified with any known form. EILAEOCARPACEAE. Sloanea austroqueenslandica Domin.—Under the heading S. Woollsii, n. var. (These PrRocEEDINGS, 1934, p. 150), the writer mentions this tree as probably a new variety, having a much larger area of dark wood than S. Woollsii. The bark of this species is also very much thicker and rougher, attaining a thickness of an inch at the height of a few feet from the ground in a tree of a diameter of 2 feet, whereas in S. Woollsii at the same distance from the ground in the same diameter of timber it is only about one-quarter of an inch. There is very little difference in either the fruits or leaves between the two species. If anything, the fruits of S. austroqueenslandica are slightly larger. This species remains longer while lying on the ground before it disintegrates, due to the small amount of white sap-wood. PASSIFLORACEAE. Passiflora aurantia G. Forst.—This is an exceedingly rare form here and only found in one locality amongst the secondary growth some years after the original brush had been cleared. MYRTACEAE. Rhodomyrtus psidioides Benth.—A brush tree, liking the vicinity of water, being found along the courses of creeks. Not very plentiful, 68 FLORA OF THE COMBOYNE PLATEAU, Eucalyptus campanulata Baker and Smith.—This Hucalypt was mentioned under the name of #. Andrewsi Maiden in the author’s first paper (PROCEEDINGS, 1925, p. 291). Later investigation has shown that this species has, among other characters, the fruit more pyriform or bell-shaped than is the case with HE. Andrewsi, whose fruit is more hemispherical. It differs also in bark. Eucalyptus triantha Link.*—According to the latest nomenclature, this name is synonymous with H#. acmenioides Schau., which name it replaces. It is already dealt with under the latter name. Eucalyptus wuwmbellata (Gaertn) Domin.*—This name likewise replaces HH. tereticornis Sm. for the same reason, and likewise dealt with before. Eucalyptus gummifera Gaertn.*—Replaces H. corymbosa Sm. under similar conditions. Kunzea corifolia Reichb.—When the last paper was written the species of this form was undetermined, as it differed in some respects slightly from K. corifolia, but the difference was not enough to propose a variety for it. (See These PROCEEDINGS, 1934, pp. 151 and 155.) ARALIACEAR. Tieghemopanax elegans R. Viguier.—This is a rare species on the Plateau, and has only been seen twice. It is an inhabitant of the brush forests. Aralia cephalobotrys F.v.M.—A creeping form found on the floor of the brushes, especially in the neighbourhood of running water. Not very often seen. UMBELLIFERAE. Hydrocotyle hirta R.Br.—A low-creeping species, liking damp situations and fairly plentiful. The leaf is large, hairy, and divided into lobes somewhat resembling the leaf of Geranium dissectum, though the divisions are not so fine. Hydrocotyle geraniifolia F.v.M.—Found in the same situations and having the same running habit as the preceding species. The leaf is divided into five distinct narrow leaflets, each of which is deeply dissected. It does not appear to be common. EIPACRIDACEAE. Styphelia lanceolata Sm. (Leucopogon lanceolatus R.Br.).—Very rarely seen and only found by the writer on the eastern side of the Plateau. It is one of the “whitebeards”. MYRSINACEAR. Rapanea Howittiana Mez.—A fairly common inhabitant of the brushes. It appears to be a tree attaining no great height. It has a shiny stiff leaf of a light green colour, the edge being entire. The small flowers encircle the medium- sized twigs. Embelia australasica Mez.—A climbing plant found in the brushes, with a stiff, shiny Eugenia-like leaf. Fairly plentiful. EBENACEAE. Diospyros pentamera F.v.M.—A tall tree with very dark, almost black, bark growing in the brushes but not common. Has small leaves, shaped like Cryptocarya Meissneri, the underside of which is yellow. It has a slender trunk for the height of the tree. *“A Key to the Eucalypts’, W, F. Blakely, 1934, BY E. C. CHISHOLM. 69 OLEACEAE. Olea paniculata R.Br.—This tree grows in the brushes and appears to be uncommon and to attain to a fair height. It possesses a rather large leaf with lighter underside showing very reticulate veins, the upper surface being dark green and shiny. The stems are covered with small rounded whitish pustules. APOCYNACEAE. Parsonsia ventricosa F.v.M—A small climber with elongated shield-shaped leaves with entire edges, the stalks exuding a milky juice when broken. Not very plentiful. ASCLEPIADACEAE. Tylophora paniculata R.Br—A small climbing form, fairly plentiful. The leaf, which is entire, is sometimes deep purple underneath. SOLANACEAE. Physalis minima L.—Both this species and Ph. peruviana share the name of “Cape Gooseberry’, which is incorrect, as the former is a native and the latter was introduced from South America. This is a very common species found growing all over the Comboyne after the original brush had been cleared. It has a pretty yellow flower with a purple centre. It is edible and much used for jam making. SCROPHULARIACEAE. Veronica calycina R.Br.—This is a very small plant running on the ground with a blue-bell flower and very dissected leaf. Not often seen. GESNERACEAE. Fieldia australis A. Cunn.—A climbing and running growth inhabiting certain brushes, and especially to be noticed in the Government Reserve near Rawson Falls. The leaf is freely dissected and hairy; the undersurface has a white flannel- like appearance. It is found growing over the rocks and bases of the brush trees. COMPOSITAE. Siegesbeckia orientalis L.—A plant growing very thickly in cultivated areas and a pest to the farmer. It grows to a height usually of 3 or 4 feet. The involucral bracts exude a sticky secretion, so that it adheres to clothing. Senecio amygdalifolius F.v.M.—This is to be found growing in profusion in certain parts of the Plateau which have been partially cleared and often found in association with S. dryadeus. It has a larger yellow flower than the latter form, with a dentate leaf. My thanks are due to Mr. W. F. Blakely, Miss Lilian Fraser, and Miss Alma Melvaine, for determination of plants, the last especially for that of the Ferns. REVISED LIST OF THE PLANTS OF THE COMBOYNE PLATEAU, 1935. PTERIDOPHYTA-FILICALES. Osmundaceae: Todea barbara (l.) Moore. Gleicheniaceae: Gleichenia circinata Sw.; G. flabellata R.Br. Hymenophyllaceae: Trichomanes venosum R.Br.; Hymenophyllum australe Willd. ; H. tunbridgense (.) Smith. : Dicksoniaceae: Culcita dubia (R.Br.) Maxon.; Dicksonia antarctica Labill.; Hypolepis punctata (Thunb.) Mett.; H. rugulosa (Lab.) J. Sm. Cyatheaceae: Alsophila australis R.Br.; A. Leichhardtiana F.v.M. 70 FLORA OF THE COMBOYNE PLATEAU, Polypodiaceae: Davallia pyxidata Cay.; Arthropteris Beckleri Mett.; A. obliterata (R.Br.) J. Sm.; A. tenella (Forst.) J. Sm.; Pteridiwm aquilinum (1.) Kuhn. ; Histiopteris incisa (Thunb.) J. Sm.; Pteris umbrosa R.Br.; P. tremula R.Br.: Adiantum aethiopicum L.; A. formosum R.Br.; A. diaphanum Bl.; A. hispidulum Sw.; A. affine Willd.; Pellaea falcata R.Br.; P. paradoxa (R.Br.) Hk.; Cheilanthes tenuifolia (Burm.) Sw.; Notholaena distans R.Br.; Dryopteris decomposita (R.Br.) O. Kuntz; D. acuminata (Lowe) Watts; D. queenslandica Domin; D. parasitica (L.) O. Kuntz; Athyrium uwmbrosum (Ait.) Presl; A. wmbrosum var. semidivisum EK. C. Chisholm; Diplazium japonicum (Thunb.) Beddome; Aspleniwm nidus L.; A. flabellifolium Cav.; A. adiantoides (.) C. Chr.; A. flaccidum Forst.; Blechnwm cartilagineum Sw.; B. serrulatum Rich.; B. Patersoni (R.Br.) Mett.; B. discolor (Forst.) Keyserling; B. capense (l.) Schlecht.; Doodia aspera R.Br.; Pleopeltis Brownii Wickstr.; P. diversifolia (Willd.) (Polypodium diversifolium Willd.) ; Cyclophorus serpens (Forst.) C. Chr.; C. conflwens (R.Br.) C. Chr.; Platycerium bifurcatum (Cav.) C. Chr. (P. alcicorne Desv.); P. grande (A. Cunn.) J. Sm.; Polypodium Billardieri (Willd.) C. Chr. (P. australe Mett.). PHANEROGAMAE-GYMNOSPERMAE. CYCADALES. Cycadaceae: Macrozamia Perowskiana Miq. CONIFERAE. Taxaceae: Podocarpus elata R.Br. Pinaceae: Callitris Macleayana F.v.M. ANGIOSPERMAE-MONOCOTYLEDONEAE. Typhaceae: Typha angustifolia Linn. Potamogetonaceae: Potamogeton tricarinatus F.v.M. Cyperaceae: Lepidosperma concavum R.Br.; L. laterale R.Br.; Gahnia aspera Spreng. ; G. psittacorum Labill.; Carex brunnea Thunb., C. appressa R.Br.; C. longifolia R.Br. Palmae: Linospadix monostachyus Wendl. & Drude; Archontophoenix Cunninghamiana Wendl. & Drude. Araceae: Typhonium Brownii Schott.; Colocasia macrorrhiza Schott.; Gymnostachys anceps R.Br.; Pothos longipes Schott. Flagellariaceae: Flagellaria indica I. Commelinaceae: Commelina cyanea R.Br.; Aneilema acuminata R.Br. Philydraceae: Philydrum lanuginosum Banks. Liliaceae: Kreyssigia multiflora Reichb.; Stypandra glauca R.Br.; Dianella coerulea Sims; Xerotes longifolia R.Br.; Xanthorrhoea resinosa Pers.; Cordyline stricta Endl.; Dirymophila Moorei Baker; Geitonoplesium cymosum A. Cunn.; Hustrephus latifolius R.Br.; Rhipogonum album R.Br.; Smilax glycyphylla Sm.; S. australis R.Br. Dioscoreaceae: Dioscorea transversa R.Br. Tridaceae: Libertia paniculata Spreng. Orchidaceae: Liparis reflexa Lindl.; Dendrobium speciosum Smith; D. Kingianum Bidw. ; D. gracilicaule F.v.M.; D. pugioniforme A. Cunn.; D. teretifolium R.Br.; Bolbo- phyllum Shepherdi ¥.v.M.; Dipodium punctatum R.Br.; Spiranthes australis Lind ; Diuris maculata Sm.; Microtis porrifolia R.Br.; Caladenia carnea R.Br. i DICOTYLEDONEAE. Casuarineae: Casuarina suberosa Ott. & Dietr.; C. torulosa Ait. Piperaceae: Piper hederacewm A. Cunn. Fagaceae: Fagus Moorei F.v.M. Ulmaceae: Trema aspera Blume (T. cannabina Lour.). Moraceae: Cudrania javanensis Tréc.; Ficus Henneana Miq.; F. eugenioides F.v.M.; Ficus rubiginosa Desf.; F. macrophylla Desf.; F. stephanocarpa Warb. Urticaceae: Urtica incisa Poir.; Laportea gigas Wedd.; Elatostemma reticulata Wedd. ; EB. stipitata Wedd.; Australina pusilla Gaud. Proteaceae: Persoonia media R.Br.; P. linearis Andr.; P. sp.; P. mollis R.Br. var.?; Helicia glabriflora F.v.M.; Orites excelsa R.Br.; Hakea saligna R.Br.; Lomatia Fraseri R.Br.; Stenocarpus salignus R.Br.; Banksia spinulosa Sm, Santalaceae: EBazocarpus cupressiformis La)ill. Loranthaceae: Phrygilanthus celastroides Hichl. (Loranthus celastroides Sieb.) ; Visewm articulatum Burm.; Loranthus dictyophlebus F.v.M.; lL. pendulus Sieb. Polygonaceae: Polygonum hydropiper L. Chenopodiaceae: Chenopodium triangulare R.Br. Phytolaccaceae: Codonocarpus attenuatus Hook, BY E. GC. CHISILOLM. Fal Ranunculaceae: Clematis aristata R.Br.; C. glycinoides DC.; Ranunculus lappaceus Sm. ; R. rivularis Banks & Solander. Menispermaceae: Legnephora Moorei Miers.; Sarcopetalum Harveyanun F.v.M.; Stephania hernandifolia Walp. Magnoliaceae: Drimys dipetala F.v.M. Anonaceae: Hupomatia lauwrina R.Br. Monimiaceae: Piptocalyx Moorei Oliv.; Wilkiea macrophylla A. DC.; Palneria scandens BR.v.M.; Daphnandra micrantha Benth.; D. tenuipes Perk.; Doryphora sassafras Endl. Lauraceae: Cinnamomum Oliveri Bailey; C. virens R. T. Baker; Litsea dealbata Nees; L. vreticulata Benth.; Cryptocarya patentinervis F.v.M.; CC. obovata R.Br.; C. glaucescens R.Br.; C. erythroxylon Maiden & Betche; C. Meissneri F.v.M.; Endiandra (virens F.v.M.?); E. Muellevi Meissn.; EH. Sieberi Nees; Cassytha melantha R.Br. Capparidaceae: Capparis nobilis F.v.M. Saxifragaceae: Abrophyllum ornans Hook.; Cuttsia viburnea F.v.M.; Quwintinia Sieberi A. DC.; Q. Verdonti F.v.M.; Polyosma Cunninghamii J. J. Benn.; Anopterus Macleayanus F.v.M. Pittosporaceae: Pittosporum wundulatum Andr.; P. revolutwn Ait.; Hymenosporwm flavum F.v.M.; Bursaria spinosa Cav. var. incana Benth.; Billardiera scandens Sm.; Citriobatus multiflorus A. Cunn. Cunoniaceae: Aphanopetalum resinosum Endl.; Geissois Benthami F.v.M.; Ackama Muelleri Benth.; Schizomeria ovata D. Don; Ceratopetalum apetalum D. Don; Weinmannia rubifolia Benth.; Callicoma serratifolia Andr. Rosaceae: Rubus moluccanus L.; R. parvifolius L.; R. rosaefolius Sm.; R. Moorei F.v.M.; Acaena ovina A. Cunn. Leguminosae: Acacia juniperina Willd.; A. melanoxvylon R.Br.; A. binervata DC.; A. floribunda Sieb.; A. Cwininghamiit Hook. var. longispicata Benth.; A. intertexta Sieb.; A. mollissima Willd.; Cassia Sophera lL.; Castanospermum australe A. Cunn. ; Oxvylobium trilobatum Benth.; Jacksonia scoparia R.Br.; Daviesia corymbosa Sm. var. arborea Maiden; Gastrolobium Boormani Maiden & Betche; Hovea acutifolia A. Cunn.; Goodia lotifolia Salisb.; Indigofera australis Willd.; Swainsona coronilli- folia Salisb.; Glycine clandestina Wendl.; Kennedya rubicunda Vent.; Harden- bergia monophylla Vent. Geraniaceae: Geranium dissectum L.; Pelargonium inodorum Willd. Oxalidaceae: Owxalis corniculata L. Rutaceae: Bosistoa euodiformis F.v.M.; Pleiococca Wileowiana F.v.M.; Geijera salici- folia Schott.; Hvodia micrococca F.v.M.; Zieria Smithii Andr.; Phebalium elatius Benth.; Acronychia laevis R. & G. Forst.; A. Baweri Schott. Meliaceae: Cedrela australis F.v.M.; Melia Azedarach L.; Dysoxylum Fraseranuwm Benth.; D. rufwm Benth.; Synoum glandulosum yellow box———————>apple. river gum. Soil type (A | stony grey sandy | yellow-brown to red-brown | clay loam _ to | river silts. horizon only) loam. | sandy loam to loam. | heavy black clay. Soil group and | steep slopes. middle slopes decreasing to flat. | Concave to flat > slope (as in Group 1. Group 2. Groups 4 Group 3 Text-fig. 1) | | and 5. Average land | about 1. | as low as 5, increasing to 20. 30 to 60 according to heaviness value (£A) | and uniformity. per acre (if | | all of one | | type) .. * White box—Eucalyptus albens; Yellow box—E. melliodora; Apple—Angophora intermedia; River gum—E. camaldulensis. In brief, then, on exposed places, hilltops, spurs and rises, soil is becoming increasingly immature, because of physical mobility. This is a persistent tendency. On middle slopes, soils are aggregates derived from several rock types and from several vegetation formations, all of which have come from measurable and limited areas. This is still true even when there is a general homogeneity of rock type, since the geological history of eastern Australia is very varied. Flood-plain soils have cumulative and specialized silt characteristics, high humus content, and are re-sorted so that the rock origin is unrecognizable and the clay content is at a minimum. Plain soils in continued liability to flooding are an anomaly in the sense that recurrent floods may alter the maturity or immaturity according as the flood brings down coarse or fine silt, or even soil from a neighbouring zone. Ancient flood plains, not now being flooded, will have a soil-type distribution in relation to their past flooding history and to their lie with relation to the immediate local source of the flood material and to the vegetation developed upon the flood plain. Further, the present method of profile 236 GROWTH OF SOIL ON SLOPES, description is not nearly adequate in view of the repetition and the “arranged” character of most of the slopes and flood-plain soils of eastern Australia. Perhaps the most significant point about slope and soil is that there is a relationship between the soils down the slope, and like slopes have many like properties. Secondly, much can be said about the soil type from its topographic site. Invariably the red loams lie on the middle slope and have experienced erosion and subsequent accumulation, so that the unconsolidated material shows a repetition, and even the topmost layers frequently exhibit that character. The last major phase has been one of accumulation. This is shown by the fresh nature of the repeated layers and the convexity of the surface as distinct from the concavity of the underlying rock surface. Thus there is a speedier run-off in the “slopes” area than one might expect, a more complete drainage, and although much iron is present, there is rarely an iron pan, and aeration is comparatively high. Thus, in the Tamworth District, for example, the middle-slope soils, which cover the largest area, show accumulated characteristics, repetition in the profile and a “convex lie”, a condition of affairs we have called ‘‘the state of being”. From the point of view of soil classification and soil behaviour, the recog- nition of a “state of being’ seems more important than determining the under- lying rock. These middle-slope soils could be stated to have a false C horizon (pseudo-C), and a mineral content recognizable only from an examination of the soil-itself. Is this ‘‘state of being” of such universality that all, or nearly all, upper, middle and lower slope soils bear a precise relation to each other, and are characterized thereby, and that a new nomenclature needs to be added to soil science? From this evidence two major ideas are derived: (1) That the rock debris and mineral content of the soil for most of the Tamworth region have been accu- mulated from a wide zone and from regions of considerably different geological history; and (2) that the present position of soil on any slope and the nature of that slope are very important factors in bringing soil to its present “state of being” and so contributing largely to the trends for change, both in the surface and in the profiles of the soils. For these reasons any classification has to give prominence to topographical site and slope, and the geomorphological history. After much reconnaissance and trials, we consider that any regional grouping should show (1) soil properties which obtain over all the area or large divisions of it, (2) properties of many of the topographic divisions, and (3) special properties of very limited regions. Bearing this principle of decreasing generaliza- tion in mind, the following working schedule gives (from an examination of the soil itself) an adequate basis for soil description and mapping: 1. The “state of being” of the soil (total unconsolidated layer), simple or complex history, the recognition of soil assemblage and soil succession. 2. Evidences in the topmost layers of climatic boundaries (non-lime-forming or lime-forming, degree of podsolization). Boundaries of vegetation formations, or approximation thereto if land is greatly cleared. 4. Recognition of major soil-type boundaries by topographic factor (following on 1). 5. Further subdivision, by regional sampling, especially of topmost layers, on basis of colour, texture and structure (as in standard soil science practice for fully mature soils). eo BY J. MACDONALD HOLMES. bo oo -~] In addition, still further subdivisions or separate units could be made in regard to erodability, behaviour sequence, and other life history and biological properties. Although this might appear to be much more than is wanted by a soil survey, it is necessary when one comes to inquire into the meaning of physical things and the bearing of one soil type to its neighbour. At any rate, these are the steps as they came to be recognized and their relative importance impressed upon us. Now the Western Slopes country of New South Wales lends itself to such an examination, but over wide, extensive plains, such a soil description may be immensely more difficult to unravel. Nevertheless, as our observations show, the above categorical schedule would function for some regions more than others, but for practically all of eastern Australia, since eastern Australia is a land of plateaux and uplands, of long, gentle convex slopes and wide valley plains. Further, even in the far western plains (for example, in the Western Division of New South Wales, which is the western half of the State, and what is there would apply to western Victoria, northern South Australia, and south-western Queensland) much gentle convexity is the commonest aspect of the landscape; and it is more than an impression that the wide, extensive red soils characteristic of these western regions bear some relation to this type of slope, especially when contrasted with the equally extensive and slightly concave areas of grey soils, and the less frequent, so-called, black soil plains. There is some virtue in the above scheme. It lends itself to progressive development with each fresh examination, for the generalized framework remains constant and gains in value as each section of any area becomes more intensively mapped, whether now or in the future. Further, soil mapping requires to be expedited if it is to keep pace with vegetation mapping and resources mapping generally, not to speak of agriculture and road engineering progress. Soil mapping for resources purposes and for all governmental work should be up-to-date in scientific procedure, but requires only a certain scale of correctness (varying with the type of area), so that all major points and boundaries of groups are fixed and general characteristics established. Detailed soil queries in regard to a particular property will always require visitation, and also in regard to scientific problems, but these are not reasons why all soil work should be suspended until a highly trained staff of experts working a few paddocks per day can traverse Australia. Soil science has proceeded far enough now to allow fresh maps to be prepared by decades, the lesser map incorporated in the greater. Further, whole new sets of facts about climate-topography-soil, these three taken together, are required if farming is to progress, and soil mapping of this more generalized kind is both adequate for description and effective in application. Some Interpretations. In soil as in landform science, many of the observations can only be inter- preted. There is no system of absolute proof, since much of the evidence has been removed, and only the result is observable. Now the most significant feature in these lesser soils, shall we say, is the profile periodicity. More knowledge is needed than we can present here. In the most frequent cases the stony or sandy layer in the middle position occurs only once and we have called it a pseudo-C horizon (C.p.). It would most certainly be mistaken for a C horizon if, say, a four-inch auger were in use. Although the pseudo-C horizon is observable best in the gullies which truncate ploughed 238 GROWTH OF:SOIL ON SLOPES, paddocks, the general smoothness of the whole surrounding filled-in middle slope indicates that the repetition must be applied to more than a very localized profile. In several cases these red middle-slope gravelly clays are used by brickworks, and so a wide selection of profiles is easily observable. In other cases road- making operations and well-digging offer similar opportunities. Profile 2. West Tamworth Brickfields. 0-12”. A horizons.—Dark grey to light fawn sandy loam (stony). 12”— 30”. B horizons.——Yellow to yellow-brown gravelly loams. 30”— 32”. C.p. horizons.—This is the termination of the B horizon, which makes 32”— 41”. an abrupt junction with the X horizons below. X horizons.—Dark yellow layer, columnar, ancient plant roots, highest clay content of whole profile. 41”— 55”. Y horizons.—Red-brown sandy layer, not columnar. 55”— 67”. Z horizons.—Purple-tinted gritty layer overlying shale. Profile 3. Bective Parish. Portion 100. 0 — 12”. A and B horizons.—Fine light grey sandy loam. 12”— 30”. .C.p. horizons.—Soil with angular pebbles. 30”— 36”. X horizons.—Clay and less pebbles, terminating abruptly. 36”— 47”. Y horizons.—Deposition zone of iron, clay and lime, hardened, also ending in a sharp break. 47”— 65”. Z horizons.—Fine dark brown sandy clay chiefly, no stony material, columnar. Profile 4. Denistone Station, near Werris Creek. 0 — 36”. A and B horizons.—Typical black soil, high clay content. 36”— 60”. C.p. horizons.—Light brown sandy loam ending abruptly in fine gravel. 60”— 84”. X horizons.—Dark brown soil, columnar, high clay content, lime pipes very well developed, not terminating in decomposed rock since underlain by several gravel and pebble beds. Profile 5. Ploughed area seven miles from Somerton on Gunnedah Road. 0— 6”. A horizons.—Fawn sandy loam. 6”— 54”. B horizons.—Similar to above, darker, slightly columnar. 54”— 66”. Light brown sandy soil. 66”— 72”. Soil and pebbles. 72”-108”. 108”—156”. 156”-168”. C.p. horizons.—Brown soil ending in a sharp, but undulating line of fine sand. xX horizons.—Dark columnar, grey-brown soils of river silt type. Y horizons.—Silt deposit, conspicuous lime pipe deposition, and large pebbles at the base. Z horizons.—Very compacted layer of disintegrated rock, cemented with spongy limestone, has the appearance of an artificially cemented rubble. Profile 6. Mudgee. 0 — 12”. A and B horizons.—Light brown sandy loam. 12”— 24”. C.p. horizons.—As above with increase in light gravel and pebbles. 24”— 42”, X horizons.—Columnar structure, increase in red iron. 42”— 60”. Y horizons.—As in X, absence of columnar structure, increase in gravel. Profile 7. Bathurst. 0 — 34”. Brown silty loam, lucerne. 34” 97” oe lwhlA ie Cia Zone of quartz pebbles. Brown silt. BY J. MACDONALD HOLMES. 239 67”— 77”. Black silt, very noticeable at a distance. 77”— 97”. Brown silt as above, but shaded into by black silt. 97”-121”. Slaty pebbles and silt. 121”-133”. Large pebbles in layers. The above profiles (2-7), and our observations over the 2,000 square miles of the Tamworth district, the Mudgee, Bathurst, New England, Lake George, and Broken Hill areas, and the region from Adelaide to Tapley’s Hill, South Australia, indicated wide universality of the pseudo-C horizon (C.p.). In some cases charred wood remains are present, which indicate that the several feet of soil overlying is of comparatively recent deposition, though before the time of the present tree growth and well before cultivation. Where much accumulation has gone on in the middle slope of recent date, due to ruthless clearing of the upper slope, or for some reason where a new cycle of erosion has commenced, as in the Dungowan Creek (Tamworth) district, the profile shows a very great degree of immaturity and an irregularly mixed character. The stony or gravelly nature of the pseudo-C horizon indicates a change in the kind and rate of deposition. The layer below the pseudo-C horizon is a stiff clay and may represent an old B, or even an A, horizon, now overlain by several feet of soil which has been long enough in position to have its own A, B, horizons. Why this change in deposition should have taken place is harder to explain, yet it must have taken place before Huropean occupation of Australia, which in many of the areas under discussion has only become intensive in the present century. The pseudo-C horizon, the soil-type distribution patterns, their depth in certain areas, and the absence of depth where depth might be expected, and the inability of the present forces to form such soils to-day, suggest past conditions of slope and climate, perhaps of elevation, different from those of to-day. There is recent acceleration of erosion (a new cycle some would call it), apart from that additional erosion brought about by man-made factors of clearing, cultivation, etc. This is confirmed by a statistical examination of erosion on upper, middle, and lower slopes, where many fresh evidences are apparent, by erosion on both banks simultaneously and on the beds of creeks, and by the advance of the hill slope against the flood plain at all re-entrants. Further, there is a general convexity of the aspect of the elements of landscape. This, of course, in addition to the long period of erosion to form the general drainage pattern already mentioned. It is fair speculation that an examination of the soil profile and the classi- fication of soils as above may give information which will help in the solution of the immediate past climate of Australia and confirm other meagre evidence that Pleistocene times were more pluvial than the present. The periodicity in the profiles and the widespread distribution of deep middle-slope soils, and the extent of the valley floors indicate a greater period of deposition over the area than obtains at present. The sequence of events from the deposition evidence suggests a development of the landscape over so long a period of time that the stream pattern bears little relation to the geological grain of the country, for example, streams traverse anticlines and synclines indiscriminately (Currabubula Creek, the Peel tribu- taries). During this period a soil surface was developed. At a very much more recent date, and somewhat cataclysmic in its incidence, increased denudation took place which involved a smoothing of the landscape, greatly increasing deposition eventually on the middle slopes. There was greater flow in the rivers and, as this flow decreased, wide silt plains were built up. This increased 240 GROWTH OF SOIL ON SLOPES, deposition throughout the slopes country was not a single event but a period of events which slowed down. Yet more recently, and accelerated by land usage of to-day, denudation has become revived and is removing the previous widely-spread deposition. It is possible from this evidence that the land was more rugged and at greater elevation than at present, or that, in view of the comparative flatness of the New England area, and other areas in eastern Australia at a high elevation, there was in recent geological times a general uplift of considerable amount, and the effect of this uplift has made itself felt most in slopes country.* In early determinations of soil, rock character was given pride of place, and as long as the A and B horizons can be shown to be directly related to a C horizon which is being formed from disintegrating rock in situ, then the rock-type name will indicate the soil-type name, and in very immature soils no better classification can be suggested. From the previous discussion, however, it is obvious that the disintegrated rock spreads from one rock type to the next, and in the case of the middle-slope soils, as already stated, the soil type bears little relation to the under- lying rock type, and the rocky character of most silt soils cannot be given an immediate origin. One tendency on slopes is towards uniformity of soil type, since forces making for erosion and transfer are obliterating the distinctions outlined above (Table 1); the grey hilltops merge into the red loams and both encroach on the river silts, which in themselves are being eroded away. This is so not only in the realm of soil but in land valuation. Loams (soil type 2) are valuable wheat soils, while river silts are still more valuable lucerne soils. If erosion continues there will be a general uniformity of soil type and a reduction in value throughout to the lower level (Table 1). In the Western Slopes of New South Wales, with the initiation of a fresh cycle of activity the natural tendency would appear to be towards increasing immaturity, which is the real issue in soil erosion as distinct from the part played by farm husbandry. In Text-figure 1, soil types 4 and 5 are a light covering (No. 4 may be three or four feet deep) of more recent soils, and are a continuation of that process of smoothing out the topography which was begun many decades ago, though the greater processes of erosion are going on alongside. This is where the complexity lies, namely, the relative value to be attached to contradictory processes going on simultaneously. There is still another aspect. In the International Soil Classification, colour is given a high place as a soil indicator, and to a great extent soils are classified on their colours. It has been shown already that the soils in the Tamworth District take their colour to a great extent from their topographic position, the general mass of soils being dark flood soils and red loams, though in the neighbour- hood of rock outcrops the rock type may be said to determine the soil colour. For example, shales give grey soils, basalts dark red-brown to black, slates red, granites yellow to brown soils. Where the land has been only recently ploughed there is a thin remnant of colour, probably derived from the nature of the primeval vegetation. Further, the chocolate, red and brown colours are very difficult to distinguish because of frequent ploughing, frequent burning of stubble and especially because lateral soil wash spreads the material from the topmost zone and also frequently exposes the deeper reds and yellows of the B horizon. *W. H. Maze is testing this by making a Slope Variation Map of part of the Western Slopes of New South Wales. BY J. MACDONALD HOLMES. 241 It is this very variety of colour-change which gives many clues to soil behaviour, so that to average the colour for a single paddock destroys the very evidence one requires. The usual method of colour determination as an indicator of soil type when applied to moderately mature soils would appear to be rather ineffectual. As mentioned at the beginning of this paper, soils must be described from their inherent qualities, and with world-wide possibilities of correlation, yet climate-topography-soil are inseparable, and if soil is to be considered one thing, and not a multitude of different things, they dare not be divorced. Furthermore, climate-topography-soil conjointly are the basis of regional policies of land usage, and perhaps even of farm husbandry—but that argument must await another occasion. In summary, then, soil can be considered as the end point of landscape develop- ment and the idea of growth, separate and contemporaneous, used as a basis of classification. Further, soil types have persistent characteristics due _ to topographic inertia. Thus do major soil groups become recognizable in the field. In the topographically less stable soils physical change is the most important feature, but in the more stable the chief changes are chemical. These changes, too, vary in given sequences with soil depth, according to the original and accumu- lated mineral content, the vegetation formation, and the present climatic régime. Thus depth profile gives a further basis for group subdivision, though these profile ehanges themselves promote soil uniformity over any given climatic region where soil accretion is nil. Again, if the soil growth be periodic in well-defined stages—a feature observable best in the less mature soils—changes in the type and rate of denudation are indicated. This periodicity may make possible the measurement of changes in tectonic forces and/or long-range climatic succession. In eastern Australia soils are still forming. In some localities this is recog- nizable by a planing-off of a convex and still unstable slope and the filling-in of an equally unstable concavity. This smoothing-out of the topography is not likely to be completed since statistical counts of these apparently contradictory processes, in conjunction with hilltop erosion and changes in river behaviour, favour a wide- spread rejuvenation of the whole denudation processes. EXPLANATION OF PLATE XIII. The four colour photographs in Plate xiii in conjunction with Text-figure 3 are a pictorial conspectus of the types of country in the Western Slopes of New South Wales. The Dufay Colour Film used has over-emphasized the blue tones, especially in the reflected colour of the river water (Fig. 4); otherwise the colours are typical. Fig. 1.—Soil cross-section as in Text-figure 3. Shows especially columnar clay zone undercut in middle position and the pseudo-C horizon above it. Fig. 2.—Typical agricultural occupation on soil group 2. Foreground shows grazing land fully cleared; a few dead trees still stand. Middle distance shows lower convex slope with typical tree types remaining from original open woodland, and young wheat (green). The far middle distance shows a typical low, stony rise, with sufficient soil on it for ploughing, on which high wheat yields are possible in years of good rainfall. Fig. 3.—A small section of country shown in Fig. 2, representing a convex slope in young wheat, but eroded by gully formation. The A and B horizons in the soil are shown by light and dark tints in the red. This was taken following a good rainy season and the floor of the gully is occupied by weeds. Typical grazing and treed slope in background. 242 GROWTH OF SOIL ON SLOPES. Fig. 4.—This shows the typical lucerne flat bordering the Cockburn River and also the other rivers of the district. The flat nature of the surface is indicated and the depth of silt; the vertical cross-section is typical and is due to under- mining and collapse. The surface covering is lucerne. At this point a river flood had carried away much valuable lucerne area, as indicated by the fresh cross- section and the lucerne growing right up to the edge. For geographical accuracy Figures 1 and 4 should be reversed. They have been processed from the wrong side of the positive colour film. IPGYNAYO} Sat ( S ° 00 Tai ANo0[O (@) “e210 fico tal AvJNCd) Ss ny ‘ Ss Te PAYA qyynog AN IN’ JO yor al Ss I ( I ud TOMLUG L 4 ou. Ul Ss ode > »Spurry] vient vi Proc. Linn. Soc. N.S.W., 1937. PAE EXT. uM y 243 ARTHUR HENRY SHAKESPEARE LUCAS. 1853-1936. (Memorial Series, No. 7.) (With Portrait.) Lucas came into the world on 7th May, 1853, at Stratford-on-Avon, where his father, the Rev. Samuel Lucas, F.G.S., was a Wesleyan Minister with a passion for Natural Science, whose calling took him over the greater part of Hngland and Wales, holding short tenancies in various towns. Lucas may thus be said to have been nursed in the lap of science and intellectual traditions, which he appears to have assimilated with gusto at an early age. At Brynmawr (S. Wales) and Helston (Cornwall), where his father was superintendent of the Wesleyan circuit of the district, the small boy revelled in wild flowers and sea shells, and even in old age recalled ‘the daffodil covered meadows’ and ‘the clear pools among the rocks, themselves covered with hbladder-wrack. I can smell the penetrating odour to-day’. Launceston, Stow in the Wold, where father and two boys collected Liassic fossils, High Wycombe (Bucks), Longton (Stafford), Scorton (Lancashire), Methwold (Norfolk), St. Neots (Huntingdon), and finally Cambridge were succes- sive homes. Though the Wesleyan Conference looked askance at this dallying with a dangerous science, the small boy Arthur was a doughty champion of his parent, when, as a lecturer on ‘Geology and Genesis’, the Rev. Samuel became embroiled with the local inquisitors. A strange boyhood, through which a clearly unusual parentage prevented the production of a prig or a pedant, that might have evolved from such environments. This notable father seldom had more than £150 a year as stipend, though getting certain allowances and making a little by the sale of fossils. In the very interesting Autobiography, written in recent years, Lucas wrote: “As a very small boy of four to six years, he would show me the specimens he obtained from the mines, and made me a little cabinet of my own in which I kept my small specimens of Quartz, Galena, Towanite (my favourite for its brilliant colours), Iron Pyrites, Serpentine from the Lizard, and so on. He made assiduous search for plants, and named with strange names, which, however, gradually came to stick in my memory. This kind of guidance was continued in later circuits, until I became familiar with most of the fossiliferous strata in England and with the majority of the plants of the British Isles.” The practical knowledge gained in these early years, with little aid of text-book or formal teaching, enabled him to win the Burdett Coutts Geology Scholarship in the University of Oxford, and as a medical student in London, the Gold Medal awarded for Botany by the Apothecaries Society (T. H. Huxley won only the Bronze Medal in his day). At the New Kingswood School, Bath, where Lucas spent seven years—the seventh under the Scholarship awarded as Head Boy of the previous year, Science had no place and he never had a lesson in Science. This school, founded by John Wesley for the ‘sons of the prophets’, imposed an iron discipline in which 244 ARTHUR HENRY SHAKESPEARE LUCAS. ‘Thou shalt not Play’ appeared to be the first commandment. The only playground was asphalted, where a favoured few could play cricket, and there was a moderate gymnasium. Chunks of dry bread and a pannikin of milk for breakfast and for tea, with a little meat at dinner, constituted the Plain Living. “Never allowed outside the school precincts alone, we worked in half-years, with five weeks’ vacation at Xmas and five in the Summer.” Yet the teaching was good, for it turned out a Senior Wrangler in J. F. Moulton and a great engineer in Sir Robert Perks. In the later days of his school life the Spartan system of early days was greatly modified. Dr. C. J. Prescott, who succeeded Lucas at Newington, was a small boy in the school in Lucas’s time. Annually they were entered for the Oxford Local Examinations. In the Senior Exam., at the age of 15, Lucas came 14th, and next year 2nd in all HEngland—a position which won for him an Exhibition at Balliol College, Oxford, where he was enrolled eighteen months later. His last year at school, as also his last year at Oxford, was interrupted by a severe attack of pneumonia—the second of these gravely threatening his career. Balliol College in 1870 was under the great Benjamin Jowett. Asquith (later Harl of Oxford), Alfred Milner, R. H. Roe (the greatest of Australian schoolmasters), W. H. Mallock (the novelist), were fellow undergraduates. But, though a new world was opened to him, he was amongst men of a different upbringing, and as a shy boy of 17, poor and poorly clad, he was unable to indulge in the social life of Oxford, unable even to subscribe to the sports clubs. At one time he even thought of trying for a scholarship at Magdalen, of higher value than his Balliol Exhibition. On consulting Jowett he was met by “You are quite right not to come on your father and you mustn’t go to Magdalen”, and was straightway helped with cheques that enabled him to continue his course. A first class in Mathematical Mods. was followed by a course for Finals in Mathematics and Natural Science, but the catastrophe of a chill and pneumonia led to a special aegrotat degree. Actually he was given a short Honour paper containing the more difficult questions from the examination of the year, and awarded fourth class Honours. This, however, was counterbalanced by the Burdett Coutts Scholarship, an open University prize, with considerable emolument, that enabled him to pay his medical fees. He had followed his older brother to London, where he promptly won the Entrance Science Scholarship at the London Hospital. Half-way through his course, owing to the death of his father and the dangerous illness of his brother, who was ordered to leave England, he sacrificed his medical career and shouldered the financial responsibility for his brother’s three young children—their mother had died— and accepted a mastership at the Leys School, Cambridge, where he taught Mathematics and Science for five years. Here he founded a Natural History Society and a Museum, to which he presented the valuable collection of fossils inherited from his father, as well as the family collection of plants, comprising 1,200 out of the 1,400 described species of British Flowering Plants and Ferns. This Museum acquired quite a reputation later, when one of the boys made great finds in the Pleistocene beds of the Cam valley. Lucas made full use of his Cambridge period, working at the Cavendish Laboratory, under Clerk Maxwell, and Glazebrook, and under M. Garnett at the Woodwardian Geological Museum, and attending Professor Bonney’s lectures. As a result he was commissioned to investigate the plutonic rocks of Guernsey and to report on some strata in the Isle of Wight, where he spent a winter vacation with a Leys boy. His paper on this was published in the Geological Magazine and alluded to with approbation by Robert Etheridge in his Presidential Address to his Section of the British Asso- ciation. He was also elected a Fellow of the Geological Society, his sponsors MEMORIAL NOTICE. 245 being Sir Joseph Prestwich and Professor Boyd Dawkins. At the Leys School Lueas played with the Rugby Football Team with some success—the only recorded instance of his share in any field sports. In 1883 Lucas was appointed Mathematics and Science Master at Wesley College, Melbourne, the Head Master of which, A. S. Way, had been a boy and Master at Kingswood. The journey across Hurope to join the S.S. Cuzco at Naples was a belated honeymoon, for he had married in 1882. His brother, Dr. T. P. Lucas, was already in Melbourne, and he was mightily attracted by the prospect of studying a new fauna and flora. The Orient boats then used to coal at Diego Garcia, a coral island in the Indian Ocean, where he went ashore and, charac- teristically, nearly got left behind through his intense interest in his first coral beach combing. He was rescued by the Orient Manager getting him back to ship and wife in a dug-out paddled by Mauritian natives. Lucas gives an amusing account of the science teaching and equipment at Wesley in 1883. Of course he started a Natural History Society and Museum, making lifelong friends, including Herbert Brookes, who wrote a delightful appreciation of his old Master in the Wesley College Chronicle (August, 1936). Lucas was probably the first teacher to introduce Field Study of Nature into a school. Taking an ad eundem degree, he became a member of the Melbourne University Senate, and, by his efforts, a motion was carried to establish a separate Chair of Biology, and the appointment of Baldwin Spencer followed. He became President of the Field Naturalists’ Club, founded by his brother, and edited the Victorian Naturalist for some years. He was a close friend of Baron von Mueller, who presided at a farewell gathering on the eve of his departure for Sydney. With J. Burslem Gregory, Lucas went for a 200-mile tramp through hitherto untramped country to Wilson’s Promontory, collecting plants and shells, after which the Field Naturalists’ Club—at Lucas’s suggestion—persuaded the Govern- ment to proclaim the Promontory a Reserve. The Journal of this Club, which Lucas edited till 1892, is still a model of its kind, while the Club has a member- ship of 300, with a monthly attendance of 50 to 70. Besides his school work in the mornings, Lucas engaged in Tutorial work at Ormond and Trinity Colleges at the Melbourne University, and was largely instrumental in the foundation of Queen’s College, of which he was Senior Fellow and Tutor in Science, his colleagues being A. W. Howitt, Rev. Lorimer Fison and Professor Dendy. He also found time to work up the Lizards of Australia, to publish papers on the Amphibia and Fishes of Victoria, and to start the Port Phillip Biological Survey. In this he was greatly aided by Baldwin Spencer, and together they persuaded the Ministry to erect a Biological Laboratory at a cost of £10,000. Only after some consideration did he decline Spencer’s offer to become Lecturer in Biology; otherwise his course of life would have been materially different from that actually followed. It was at Spencer’s suggestion that the “Introduction to Botany” by Dendy and Lucas was written, a work that has been, and still is, in much use amongst students. From 1892 to 1898 Lucas was Head Master of Newington College, Stanmore, during which period the school enrolment increased by 50 per cent., and a high University honour roll ensued. In Sydney he at once joined our Society, whicn then had five members who achieved their F.R.S. (David, Haswell, Hill, Maiden, and Wilson). He went on geological excursions with David, and became the close friend of J. J. Fletcher, with whom he explored the wonderful sandstone areas of Sydney and the Blue Mountains. On one of their trips they left Sydney in the BB 246 ARTHUR HENRY SHAKESPEARE LUCAS. evening, walked 10 miles from Bell, to reach the summit of Mt. King George at 6 a.m. His first papers in the Linnean Proceedings were mostly on Lizards. Altogether he contributed 14 papers, those of the last ten years chiefly on Marine Algae, of which he was the acknowledged Australian authority. Two papers also were written in conjunction with others. A member of our Council from 1894 till his death (with the exception of two years, 1924-26, spent in Tasmania), he was President 1907-09. His Presidential Address of 1908 is a model of sane pleading for the proper relation of the State to Science, and should be read by those who did not have the privilege of hearing it. In 1909 he set a useful example in laying on the table the MS. of his ‘Revised List of the Fucoideae and Florideae of Australia’ as a substitute for less concrete matter. He was specially selected to give the Memorial Lecture to his brother botanist and friend J. J. Fletcher, and his own words on this subject fitly describe himself as teacher: “There is perhaps one word only in which may be summed up both his discipline and his instruction — sincerity. He hated all humbug and shams, but he loved all that is true or beautiful or good in nature, in literature and in human character.” In 1899 Lucas became Mathematical and Science Master of the Sydney Grammar School. Here he worked for 25 years; was acting Head Master during the war years—when Mr. Sloman was at the front—and, after the resignation of Mr. Sloman, in his own right till 1923. As a sideline in 1906 he assisted with the lectures in Geology and Physiography at the Sydney University, during the absence of Professor David. He also, for many years, was Examiner in Chemistry for the Technical College, Sydney. As a teacher, Lucas possessed a phenomenal versatility of knowledge which, combined with unusual patience, equability of temper, and a genuine love of the young, made him notable in his profession. During his career at Newington and the Grammar School his personal pupils won the medals, given for the best candidate in the University Senior Examinations, in no less than 13 different subjects. One of these fell to a lad who, short of a subject, took up Physiology, and sat in Lucas’s classroom during certain hours picking up the intellectual crumbs that fell during the few available spare moments of class teaching. Besides the Sciences—including Mathematics—Greek, Latin, German, Ancient History, and especially English Literature, came with equal facility, and he would discuss some French verses he had written with the French Master, or compose an English sonnet to illustrate its earlier form. A ripe English scholar, he was especially selected at Wesley to take the VIth Form in English, whom he regaled on a wide range of reading, from ‘Ralph Roister Doister’ to ‘The Ring and the Book’. With a rich fund of quotations, often humorously applied, with a twinkle in his eye, he would poke fun at an entomologist friend with lines from Browning or satirize a piano-playing nuisance with a clever parody on Walt Whitman. In (or about) 1900 he gave, by special request, two memorable lectures before the Teachers’ Guild of New South Wales on ‘Maximum and Minimum Temperature’, with impressive experiments carried out on the platform on steel welding and liquid air respectively. One of the most remarkable fruits of his learning was his linguistic powers. From school he brought a sound scholarship in the classics and French, with some proficiency in German. With little continental travel, or other inducement than the desire for information from foreign books of Science, Lucas set himself to master a difficult language as a holiday pastime. Thus, while spending a summer vacation with him at Twofold Bay, the writer found him MEMORIAL NOTICE. 247 reading Don Quixote in the original Spanish. He acquired Italian in order to study the ‘Sylloge Algarum’ of De Toni. He took up Russian in order to read a Russian author on Lizards; and this was no light dalliance, having its practical application during war years, when he was the only available interpreter who could attend a law court and help some Russian refugees in trouble. He also gave a lecture at the school on modern Russian Literature. With a backward pupil he, on one occasion, not once or twice, but five times, explained the working of a problem in Algebra. When someone commented on his patience he answered simply, “If I hadn’t done it the fifth time the other four times would have been wasted.’ Herbert Brookes says of him, “he had a new way otf teaching in those far off days. I question whether any other teacher in Australia has touched so intimately and deeply the lives of so many young Australians’, and he quotes as appropriate to Lucas, “Knowledge may be gained from books, but the love of knowledge is transmitted only by personal contact’. Of his modesty one may quote his own words on J. J. Fletcher: “His aim was not to be talked about for doing something, but to do something great because it was a fruitful thing to do.” In 1923 he retired from school work, but not to rest. On Professor Carslaw’s recommendation he accepted the Chair of Mathematics in the University of Tasmania, as Acting Professor; surely a unique performance for a man of 70. To quote Dr. Prescott, “Few men would have cared, or dared, to take such a responsibility at his age. But in his quiet way he was a daring soul’. In November, 1924, he wrote: “It has been an interesting experience, and I have enjoyed the work, though it has been rather strenuous, as I was very rusty. They have asked me to take similar work through next year and I have agreed, but I think I shall be glad actually to begin to rest.” Again, in October, 1925, he wrote: “Tasmania has, I believe, rejuvenated me, and I shall part from her, and the folk here, with much reluctance.” Amongst these folk were Mr. and Mrs. L. H. Lindon—the former Head Master of Geelong and an old Grammar School colleague—and Mr. and Mrs. Perrin, who shared in his algae hunting. During the last decade of his life Lucas showed his ‘rejuvenation’ by his active research on the Algae. He wrote the article ‘Algae’ for the Australian Encyclopaedia. With Mrs. Perrin he collected the seaweeds of the Barrier Reef and of Lord Howe Island. As Curator of the Algae he was allotted a special room at the Botanic Gardens. The Commonwealth Government sent him on a special mission to report on the economic possibilities of the seaweeds of Western Australia. Paying a visit to Rottnest Island, by special permission—for this island is wholly reserved as a penal settlement—he stayed for a week in the Governor’s quarters and “was driven from point to point of the coastline in the prison van and assisted in the collection by two convicts. These men so enjoyed their association with him that they continued to collect for him and communicated with him afterwards”. Such was his power in winning affection from all sorts and conditions of men. “It was the response to his own genuine affection for all humanity, birds, insects and plants. He was, in very truth, one of the world’s great lovers and recalls the spirit of St. Francis.” (H.B.) Since the death of his wife, Lucas lived at Roseville with his daughter, Mrs. Cortis-Jones, and her husband. Here he loved to grow the native shrubs, flowers and ferns collected in his rambles. Every summer was spent in Victoria and Tasmania collecting Algae and knowledge to the end. He published classified lists of the Algae of Tasmania, Tropical Queensland and of Australia in general, also of Lord Howe Island. Since his death, Part 1 of ‘The Seaweeds of South 248 ARTHUR HENRY SHAKESPEARE LUCAS. Australia’ has been issued by the South Australian Branch of the British Science Guild (June, 1936). In this Handbook, besides enumerating and classifying, with copious illustra- tions, the Green and Brown Seaweeds, he gives (1) An Outline of the Progress of Phycology in Australia, (2) Hints on Collecting and Preserving Seaweeds, (3) General Notes on the Classes of Sea Plants, (4) The Work of Seaweeds in Nature, (5) The Uses of Seaweeds to Man. In common with many other scientific men— notably with his fellow Linneans David and Tillyard—Lucas was a skilful draughtsman and photographer; and the illustrations of this and other works are from his own drawings or slides. Alas! he overtaxed his waning strength when, at 83, he faced stormy weather on the rocks of Warrnambool in May, and a cold developed into pneumonia. On the train journey homeward he collapsed at Albury and died in the Albury Hospital three weeks later (10th June, 1936) from heart weakness. A large gathering paid their last homage at the service, held in the Roseville Methodist Church. Here his old schoolfellow and fellow Head Master, Dr. C. J. Prescott, gave an eloquent address. Representatives of every class of the community were there, including many old colleagues in Science and Education and the prefects of the two schools where he had held sway. Hulogistic notices have appeared in the Wesley College Chronicle and the Sydneian—in the latter from four sources, and these have been quoted freely in the present Memorial. Perhaps the most outstanding characteristic in him was that self-effacement that sprang from extreme modesty and a humility learnt from his Puritan forbears. ‘Lucas helps you to believe in Christians’, said Mr. Weigall to Dr. Prescott. It was this common heritage, as much as scientific sympathy, that was the bond between Lucas and Fletcher. They were alike in their scorn of material profit. Fletcher’s refusal of higher salary or assistance when he considered that the Society couldn’t afford it is matched by the refusal of Lucas to accept more than £1,000 a year as Head Master of the Sydney Grammar School, though offered £1,500, for a similar reason. This self-effacement also formed a veil which dimmed the radiance of his work in the public eye. His name does not appear in the Australian Who’s Who, though its pages are filled with the names of lesser men. The great sacrifice of his medical career in the interest of his brother has been already noted. Other acts of unselfishness were almost every-day features of his life. Here is one that was clearly impressed on the writer’s mind at the time.s AS a rare indulgence, Lucas, together with Fletcher, joined a botanical expedition to Mt. Kosciusko, organized by the late J. H. Maiden. On the first day, wandering in this floral Elysium, he and Fletcher became separated towards the evening; Lucas—always a poor bushman and, as on Diego Garcia, lost to the world in the worship of Pan—was veritably bushed, and unable to find the camp. He managed, however, to find his way to the Observer’s hut on the summit, where he was detained for 48 hours by a dense fog. Unfortunately a returning horseman passed the Maiden Camp that evening, heard that Lucas was lost on the mountain, and spread the news. This obtained headlines in the Sydney evening papers, and an Over- zealous cleric took it to Mrs. Lucas. Lucas hastened home to console a harassed wife, giving up a well-earned holiday. Reference has already been made to the Autobiography written in his late years which it is hoped will see the light of publication. Here is told the brave struggle of a gifted lad who, under the rare teaching and example of a splendid father, chose to scorn delights and lead laborious days, careless of reward but ambitious in effort. Some verses written recently by Lucas and quoted in full in the Wesley College article may be given here in part to show the strength of this early influence, MEMORIAL NOTICE. 249 Stow on the Wold, Gloucestershire. 1862. “Of a year of my childhood the scenes I behold Where we lived on the hillside of Stow on the Wold, For its fields and its faces remain with me yet, And the folks and the flowers I never forget, Where the wind blows cold On old Stow on the Wold. In the white quarries of fossils a store, In the deep railway cuttings a hundredfold more, How the navvies delighted tobacco to spy When they saw the good parson advancing to pry In the clay stiff and cold Of old Stow on the Wold. For a bargain in fossils the parson was keen, And he knew them, from Cambrian to Post-Pliocene, When he lectured, the Clergy looked wise as they knew, For the Squire in the Chair gave the Clergy the clue— We must Science uphold In old Stow on the Wold.” Some of his friends lamented that his gifts would have more appropriately adorned a University Chair than the Schoolmaster’s desk. Yet, while it is clear that he could have filled almost any Chair of Science as efficiently as he did that of Mathematics, he himself was well content to be employed usefully; cheerfully carrying out the drudgery that went with the endless looking over of examination papers—elsewhere described as soul-destroying work; ever holding aloft the lamp of lofty aims and noble ideals. His portrait by Hanke—a tribute of admiration from Old Boys—hangs in the Assembly Hall of the Sydney Grammar School. It is a great thing to have passed on such a record. Few men have earned so thoroughly the title ‘scholar’ as he whose whole life was spent in the pursuit of knowledge: and this, not to be stowed away in some mental lumber room, but to be utilized to the full for the benefit of his fellow men. Of his family his daughter Ida married Mr. H. F. Cortis-Jones of the Newington College Teaching Staff; a second daughter, Grace, married Dr. J. O’Keefe. Three grandchildren are living. As an appropriate ending to the Memorial of a great Linnean I am permitted to quote the spontaneous homage of an eminent Melbourne citizen, whose heart, as well as his hospitable home, was so freely open to the loved teacher of earlier years. To A.H.S.L. When at the last, as that great tide of God Sweeps on me with its never ending flow, And I am lifted up and borne along Upon its buoyant breast, as all must be; And gently flung upon some quiet shore, tT os And tranquil inlet of those Happy Isles: /O There on that golden strand, full well I know, pg = i I shall behold that old familiar form ; = Of him I learned to cherish in this life, Bending as was his wont above the weeds, * Shaking their beauty forth from foreign dross, - And fondling with an earth-begotten love. There shall I join his club of kindred souls, Formed to prospect that other Out-of-Doors. Still, still, he shall reveal to me those dear And precious things, that are not for the mart, To which my untrained eyes are mostly blind. Herbert Brookes. H.J.C, 250 ARTHUR HENRY SHAKESPEARE LUCAS. LIST OF PAPERS BY A. H. S. LUCAS. 1882. On the Headon Beds of the Western Extremity of the Isle of Wight. Geological Magazine, n.s. Decade ii, Vol. ix, p. 97. 1885. Charles Darwin in Australia. Vict. Nat., ii, p. 20. 1886. Note on the Habits of Hermit Crabs. Trans. and Proc. Roy. Soc. Vict., xxii, p. 61. 1887. On the Sections of the Delta of the Yarra, displayed in the Fisherman’s Bend Cutting. Trans. and Proc. Roy. Soc. Vict., xxiii, p. 165. On the Sound Organs of the Green Cicada. Trans. and Proc. Roy. Soc. Vict., xxiii, p. 173. On the Production of Colour in Birds’ Eggs. Trans. and Proc. Roy. Soc. Vict., xxiv (1), p. 52. 1888. Presidential Address. Vict. Nat., v, p. 1. 1889. Victorian Sharks. Vict. Nat., v, p. 175. Presidential Address. Vict. Nat., vi, p. 45. 1890. Short Address on Recent Progress in Biology. Proc. Roy. Soc. Vict., (N.S.) ii, p. xvii. A Systematic Census of Indigenous Fish, hitherto recorded from Victorian Waters. Proc. Roy. Soc. Vict., (N.S.) ii, p. 15. On the Occurrence of Kraussina lamarckiana (Davidson), at Williamstown, with a Census of the Victorian Brachiopoda. Proc. Roy. Soa Vict., (N.S.) ii, p. 48. On some Additions to the Fish Fauna of Victoria. Proc. Roy. Soc. Vict., (N.S.) ii, p. 63. Notes from the Biological Laboratory of the Melbourne University. (1) On the Occur- rence of a Partially Double Chick Embryo. Proc. Roy. Soc. Vict., (N.S.) ii, p. 111. Zoology: Vertebrata. In ‘“‘Handbook of Victoria’, Aust. Assen. Adv. Sci., Melbourne Meeting, 1890. The Geographical Distribution of Land and Fresh-water Vertebrates in Victoria. Rept. Australasian Assocn. Adv. Sci., ii, p. 558. (Title only.) 1891. On the Occurrence of certain Fish in Victorian Seas, with Descriptions of some New Species. Proc. Roy. Soc. Vict., (N.S.) iii, p. 8. A Visit to Lake Nigothoruk and the Mount Wellington District, Gippsland. Vict. Nat., vill, 17. (With A. W. Howitt and A. Dendy.) 1892. A New Species of Fresh-water Fish from Lake Nigothoruk, Mount Wellington, Victoria. Proc. Roy. Soc. Vict., (N.S.) iv (1), p. 27. Note on the Distribution of Victorian Batrachians, with Descriptions of two New Species. Proc. Roy. Soc. Vict. (N.S.) iv (1), p. 59. An Introduction to the Study of Botany, with a Special Chapter on some Australian Natural Orders. (With A. Dendy.) (Melbourne, 1892.) 1894. On a new Skink Lizard from Tasmania. Proc. Linn. Soc. N.S.W., Ser. 2, viii, 1893, pt. 2; p» 227. (with GCG Frost.) The Lizards indigenous to Victoria. Proc. Roy. Soc. Vict., (N.S.) vi, p. 24. (With GC. Frost.) 1895. Preliminary Notice of certain New Species of Lizards from Central Australia. Proc. Roy. Soc. Vict., (N.S.) viii, p. 264. (With C. Frost.) On the Formation of a Mackerel Sky. Proc. Linn. Soc. N.S.W., Ser. 2, ix, 1894, pt. 3, p. 551. 1896. Further Preliminary Notice of certain Species of Lizards from Central Australia, Proc. Roy. Soc. Vict., (N.S.) viii, p. 1. (With C. Frost.) MEMORIAL NOTICE. 261 Descriptions of a new Species of Ablepharus from Victoria: with Critical Notes on two other Australian Lizards. Proc. LINN. Soc: N.S.W., xxi, pt. 3, p. 281. (With GC. Frost.) 1897. On some Facts in the Geographical Distribution of Land and Fresh-water Vertebrates in Victoria. Proc. Roy. Soc. Vict., (N.S.) ix, p. 34. Description of two new Species of Lizards from Central Australia. Proc. Roy. Soc. Vict., (N.S.) ix, p. 54. (With C. Frost.) 1898. Contributions to a Knowledge of the Fauna of British New Guinea. Lacertilia and Batrachia. Proc. LINN. Soc. N.S.W., xxiii, p. 357. Distribution of Lizards in the Pacific. Rept. Australasian Assocwmw Adv. Sci., vii, p. 663. (Title only.) Histology of Podocarpus. Rept. Australasian Assocn. Adv. Sci., vii, p. 664. (Title only.) 1900. Description of a new Lizard from Northern Queensland. Proc. Roy. Soc. Vict., (N.S.) xii (2), p. 145. (With C. Frost.) 1901. A Census of Australian Lizards. Rept. Awstralasian Assocn. Adv. Seci., viii, p. 256. (With C. Frost.) 1902. Descriptions of some New Lizards from Western Australia. Proc. Roy. Soc. Vict., (N.S.) xv (1), p. 76. (With C. Frost.) 1903. Description of two new Australian Lizards, Varanus spenceri and Diplodactylus bilineatus. Proc. Roy. Soc. Vict., (N.S.) xv (2), p. 145. (With C. Frost.) 1908. Presidential Address. The Relations of Science and Government. Proc. LINN. Soc. N.S.W., xxxiii, p. 1. 1909. Presidential Address. Revised List of the Fucoideae and Florideae of Australia. Proc. LINN. Soc. N.S.W., xxxiv, p. 1. The Animals of Australia. (With W. H. D. Le Souef.) (Melbourne, 1909.) The Future of the Pacific. Rept. Australasian Assocn. Adv. Sci., xii, p. 385. 1911. The Birds of Australia. (With W. H. D. Le Souef.) (Melbourne, 1911.) 1912. The Gases present in the Floats (Vesicles) of certain Marine Algae. Proc. LINN. Soc. N.S.W., xxxvi, 1911, pt. 4, p. 626. Supplementary List of the Marine Algae of Australia. Proc. LINN. Soc. N.S.W., xxxvii, its db, To ale, ISLS }a Notes on Australian Marine Algae. i. Proc. LINN. Soc. N.S.W., xxxviii, pt. 1, p. 49. 1914. Marine Algae. N.S.W. Handbook, B.A.A.S. Meeting, Australia, 1914, p. 459. 1916. Notes from the Botanic Gardens, Sydney: Parthenogenesis in Aquatic Phanerogams. Proc. LINN. Soc. N.S.W., xli, pt. 3, p. 417. 1917. An Efflorescence on some New Zealand Kelps. Proc. LINN. Soc. N.S.W., xli, 1916, pt. 4, p. 676. 1919. The Algae of Commonwealth Bay. Australasian Antarctic Hxpedition, 1911-14, Scientific Reports, Series C, vii, 2. Notes on Australian Marine Algae. ii. Description of four new Species. Proc. LINN. SOG UNESAWss XLiva Dpto en tlai4Ar. A Week among the Sea-weeds at Portsea. Vict. Nat., xxxvi, p. 60. Ferns grown in the Open. Vict. Nat., xxxvi, p. 89. 252 ARTHUR HENRY SHAKESPEARE LUCAS. 1925. Algae. The Illustrated Australian Encyelopaedia. Vol. i, p. 47. 1926. Notes on Australian Marine Algae. iii. The Australian Species of the Genus Nitophyllum. Proc. LINN. Soc. N.S.W., li, p. 594. UDA Notes on Australian Marine Algae. iv. The Australian Species of the Genus Spongo- clonium. Proc. LINN. Soc. N.S.W., lii, p. 460. Notes on Australian Marine Algae. vy. Proc. LINN. Soc. N.S.W., lii, p. 555. On an additional Occurrence of Bythotrephis in Victoria. Mem. Nat. Mus. Melbourne, No. 7, p. 157. : 1929. The Marine Algae of Tasmania. A Classified List of the Algae which have been recorded from Tasmania and the Adjacent Islands. Pap. Proc. Roy. Soc. Tas., 1928, p. 6. A Census of the Marine Algae of South Australia. Trans. Proc. Roy. Soc. S. Aust., liii, yo, Gh), 1930. Joseph Henry Maiden. Proc. LINN. Soc. N.S.W., lv, p. 355. Fletcher Memorial Lecture, 1930. Joseph James Fletcher, an Idealist Secretary. Proce. LINN. Soc. N.S.W., lv, p. 738. UO ayal. Notes on Australian Marine Algae. vi. Descriptions of six New Species. Proc. LINN. Soc. N.S.W., lvi, p. 407. The Marine Algae hitherto recorded from North-east Australia. Reports Great Barrier Reef Committee, iii, p. 47. The Caulerpas of Victoria. Vict. Nat., xlviii, p. 84. HS BBF An Australian -Sea Rover. [Asparagopsis armato.] Vict. Nat., 1, p. 133. A Pioneer Botanist in Victoria. [Dr. W. H. Harvey.] Vict. Nat., 1, p. 186. 1934. Notes on Australian Marine Algae. vii. The Algae of the Low Islands. Proc. LINN. Soc. N.S.W., lix, p. 348. 1935. The Marine Algae of Lord Howe Island. Proc. LINN. Soc. N.S.W., lx, p. 194. 1936. The Seaweeds of South Australia. Part i. Introduction, and the Green and Brown Seaweeds. (Adelaide, June, 1936.) bo ON THE IDENTITY OF THE BUTTERFLY KNOWN IN AUSTRALIA AS HETERONYMPHA PHILEROPEH BOISD., 1832. By G. A. Warrertwousr, D.Sc., B.E., F.R.E.S. [Read 29th September, 1937.] One of my tasks, when in London during 1936, was to ascertain, if possible, the precise locality in Australia at which the species described by Boisduval in 1832 as Satyrus philerope was obtained. This name has been applied to a species of Heteronympha allied to H. merope Fab., 1775. My investigations, however, have led me to the conclusion, as shown below, that the name philerope cannot be used for the species to which it has been applied for about 80 years and, indeed, must sink as a synonym of Satyrus klugi Guér., 1831. It is well known that considerable confusion has arisen in regard to the insects obtained during the French voyages in the Pacific during the early years of last century. The localities are often interchanged, and sometimes the specimens collected on one voyage are mixed with those of another voyage. Then, again, different entomologists wrote on different voyages almost contemporaneously. The two voyages which form the basis of this discussion are the voyage of the ‘Coquille’ and the voyage of the ‘Astrolabe’. L The only port in Australia touched at by the ‘Coquille’ was Sydney, from 17 January to 22 March, 1824. Whilst at Sydney an excursion was made across the Blue Mts. to Bathurst. (Narrative of Voyage of ‘Coquille’, Vol. 1, p. 240, by Lesson.) The butterflies of this expedition were first figured in colour on Insect Plates 13 to 18 in the years 1830 and 1831. The figures on the plates are very good, and there is no difficulty in recognizing the species. The names are given at the bottom of the plates and the new species are attributed to Guérin. The text was not published until 1888, when the descriptions are given in Zoology II, pt. 2. On page 272 Guérin states that Boisduval had at his disposal the specimens from the ‘Coquille’. In Australia the ‘Astrolabe’ called at King George’s Sound, 7-25 Oct., 1826; Western Port, 12-19 Nov., 1826; Jervis Bay, 26-29 Nov., 1826; Port Jackson, 1-19 Dec., 1826; Hobart, Tasmania, 16 Dec., 1827, to 5 Jan., 1828. The butterflies were described by Boisduval in 1832 and, in addition to the species collected on the voyage of the ‘Astrolabe’, he included species from other French voyages and the species described by Fabricius, Donovan, Leach, W. S. Macleay and others. He indeed produced a descriptive catalogue of the butterflies of the South Pacific as then known. In the text he mentions all the Pacific species of Guérin, figured on Plates 14, 15 and 16, using Guérin’s names excepting Argynnis gaberti. He credits the names to Guérin, but does not quote the plate or figure. Of the figures on Plate 18 of the ‘Coquille’, Boisduval mentions coritus and poeta, both of which he attributes to Guérin. It is an open question whether he actually saw these plates of the ‘Coquille’ before he wrote the ‘Astrolabe’ text or the specimens in the Paris Museum labelled by Guérin. I believe the first to be the case. Then, while cc 254 ON HETERONYMPHA PHILEROPE BOLSD., the catalogue of Boisduval was in the press, Plates 13, 14bis, 17, and probably 18 were published. The species on these plates are referred to in an ‘Avis’, a page inserted, without pagination, just after the title page. Here Boisduval identifies some of his new species with those figured by Guérin on these plates, and says SN. klugi Guér. is the same as VS. philerope Boisd. He mentions that he had seen in the Museum the specimen of cleotas labelled poeta by Guérin, and is at a loss to understand why Guérin changed the name. When the text of the ‘Coquille’ was published in 1838, Guérin used the names given by Boisduval in preference to his own. On page 279 he gives S. philerope Bois. with S. klugi Guér. as a synonym. On placing the above before Mr. F. Hemming, he gave it as his opinion that, as Boisduval himself had stated that his 8. philerope was identical with S. klugi Guer., the name plilerope must sink to klugi. This is confirmed by Guérin in 1888, and there seems to be no doubt that both Guérin and Boisduval saw the types. In all cases where the new species were given as identical in the two voyages by Boisduval, it should be noted that the name given by Guérin now takes precedence, excepting in the case of klugi and philerope, the name philerope being applied to a Heteronympha and not used as a synonym of klugi. Also, if Plate 17 of the ‘Coquille’, on which klugi is figured, had appeared earlier, Boisduval would have adopted that name in place of philerope. It was then necessary to examine all the specimens that may have been obtained during the voyages of the ‘Coquille’ and the ‘Astrolabe’. Fortunately, many years ago the Boisduval collection had become part of the Oberthur collection which, in 1927, was purchased by the British Museum of Natural History. The old specimens labelled klugi, singa (the male of klugi) and philerope were carefully examined, as well as five specimens from the Paris Museum, sent by M. F. le Cerf, who said that beyond these five specimens there were no other specimens unquestionably taken on the voyages of the ‘Coquille’ or ‘Astrolabe’. Photographs of the labels in the British Museum were taken by Mr. N. D. Riley and submitted to M. R. Oberthur and M. F. le Cerf for their opinion on the hand- writing. It remains to be seen how the name philerope came to be used for an Australian species of Heteronympha. These species are all single brooded and have very definite times of appearance on the wing. The following are pertinent to the discussion. Satyrus klugi Guér. first appears on Insect Plate 17, fig. 2, 1831, in the ‘Coquille’ Atlas. No sex is stated, but the figure is of a female and must have come from the Blue Mts., as the figure agrees best with my series from there. Satyrus singa Boisd. is described from a single specimen in the ‘Astrolabe’, p. 145, 1832. This is a male and the other sex of klugi. It, no doubt, came from near Sydney as, with the exception of Hobart, the other ports of call by the ‘Astrolabe’ were too early for it to be on the wing. It is stated to resemble merope, and no ocelli are mentioned on the underside of the hindwing. There is a male in the British Museum labelled singa B.d. nlle. holl., in what I believe to be Boisduval’s writing, to which has been added, at a later date, klugi Gr. This is without doubt the holotype male of singa. Satyrus philerope Boisd. was described in the ‘Astrolabe’, two pages after singa, and is also stated to have a great resemblance to merope. The Latin and French descriptions do not quite accord. There is one ocellus on both wings on the upperside and on the underside of the forewing in the male, but the Latin description seems to suggest no ocellus on the underside of the hindwing, and the bo ol oO BY G. A. WATERHOUSE. French two ocelli. The female has definitely one ocellus on the upperside and underside of the forewings and two ocelli on both sides of the hindwing. The types are not available and are probably lost. Boisduval states in the ‘‘Avis” that this species is the same as S. klugi Guér. When the text of the ‘Coquille’ appeared in 1838, Guérin adopted the name philerope Bois. (Zoology, Vol. II, pt. 2, p. 279) and placed klugi as a synonym and copied Boisduval’s Latin description only, giving the locality as near Port Jackson. Guérin also used Boisduval’s names for other species in preference to his own. In the Voyage of the ‘Favorite’, Suppt., Pl. 3, Feisthamel gives a good figure of the male of singa, which is correct. Boisduval’s description is copied, but the third word “fuscis” of the Latin description is inadvertently omitted. Regarding philerope, of which a figure is also given on Pl. 3, Boisduval’s Latin description is copied, but the French is considerably altered. The male description does not refer to the Heteronympha. but the female description and figure certainly do. The figure is stated to be of a female variety, but it is a normal mainland female. On p. 16 the ‘Coquille’ figure of klugi is incorrectly said to be a male. In Annals Magazine Nat. Hist., (3), xix, p. 125, 1867, Butler considered philerope Bois. to be a composite species, and incorrectly calls the ‘Favorite’ figure of philerope a male. He then describes and figures what he considers the female philerope. His figure, description and the specimen still in the British Museum show it to be the female of H. merope duboulayi Butl., 1867. In a note to his male he states: “Dr. Boisduval, Guérin and Westwood have agreed in considering this to be the female of klugi, which belongs to another genus”. In his Catalogue of the Satyridae in the British Museum, 1868, Butler still considers philerope Boisd. a composite species (p. 100 and p. 166) and still considers the ‘Favorite’ figure a male. It will be seen from the above that there has been considerable confusion and the sex of various specimens has been incorrectly given. The puzzle is cleared up when it is seen that Guérin and Boisduval, and certainly Feisthamel, incorrectly considered the ‘Coquille’ figure of klugi a male. The specimens examined in London were as follows: 1. The holotype male XS. singa Boisd. from the Boisduval collection, now in the British Museum. 2. A male from the Paris Museum with an old label by H. Lucas singa Bdy. This may be the original of the ‘Favorite’ figure. It, like No. 1, is the male of klugi. A female in the British Museum from the Boisduval collection with a label Philerope B. nlle. Holl. This is not in the handwriting of Boisduval. It may be the specimen figured in the ‘Favorite’ and is the female of the Heteronympha from the mainland. It has been incorrectly considered the allotype female in the British Museum. 4. A male of the Tasmanian race of the Heteronympha in the British Museum from the Boisduval collection with a label n. holland and a manuscript name in Boisduval’s writing. 5. A female in the Paris Museum of the same race as No. 4 with the same manuscript name in the handwriting of H. Lucas. 6. A male from the Guenée collection in the British Museum with a label Satyrus klugi Guér. which is almost identical with No. 4 and is not klugi Guér. The label is in the handwriting of Guenée. The available data as set out above lead to certain conclusions, Co 256 ON HETERONYMPHA PHILEROPE BOISD., There is no evidence to show that the butterfly at present called philerope is really Boisduval’s species. No example has been found in the Boisduval collection nor in the Paris Museum so labelled by him. Boisduval’s description of his male philerope agrees better with the female of klwgi in having one ocellus on the hind- wing above and the colour of the hindwing below. Both male and female of the Heteronympha have two ocelli on the hindwing above, excepting in two specimens. The wavy lines are not black in the Heteronympha but, when they are present, are black in the female hklugi. It is my opinion that philerope Boisd. has for its male the female klugi and for its female either the male or the female of the Heteronympha. This will explain why Boisduval considered his philerope the same as klugi Guér. and also Feisthamel considering his figure of philerope to be a variety. Since philerope is not a valid name, the Heteronympha that has for a long time borne that name requires a name, which is given below. The synonymy of the species concerned is also given. XENICA KLUGI Guérin. Satyrus klugi Guérin, 1831, Voy. Coquille, Atlas Plate 17, fig. 2 (female) ; SN. singa Boisd., 1832, Voy. Astrolabe, Lep., p. 145 (male); S. philerope Boisd., 1832, l.c., p. 147 (part. female as male); Xenica klugi Guér., Waterh. and Lyell, Butter- flies of Australia, 1914, p. 44, figs. 137, 138, 825 (males); Y. klugi Guér., Seitz Macrolep., 1911, Vol. ix, p. 304, Pl. 93c. This is one of the commonest Satyrids in Australia. It is found from southern Queensland throughout N. S. Wales within 150 miles of the coast, Victoria, South Australia, and coastal Western Australia. In more southern localities it occurs near the sea. It is also plentiful in Tasmania. I have recently examined more than 300 specimens, and in only two cases do I find a subapical ocellus on hind- wing above. Although the two ocelli are present below, they are usually indistinct. This species does not show any marked geographical variation, but specimens from Western Australia are usually smaller than those from the east. The type locality is the Blue Mts., N. S. Wales. In Western Australia an allied species, Y¥. minyas Waterh. and Lyell, 1914, is found. It has the dorsum of forewing above yellow instead of brown-black. It is found earlier in the year than klugi and shows marked geographical variation. HETERONYMPHA PENELOPE, N. Sp. H. philerope, auctorum; Satyrus philerope Boisd., 1832, female only; H. philerope, Butl., 1867, male only. The male of this species can be readily recognized by the prominent sex mark occupying more than the basal half of the cell of the forewing above and reaching a prominent black cell spot. In bred specimens this sex mark is black, but it becomes duller with age. The upperside of the forewing is black with orange spots and a subapical ocellus. The hindwing is orange with termen and a short band beyond cell black, a prominent subtornal ocellus and a variable smaller subapical ocellus. Beneath, the forewing is paler than above, with apex darker and with black spots, but without the sex mark so that the black cell spot is very conspicuous; a ringed subapical ocellus. Hindwing orange-brown with three red- brown wavy lines; a prominent ringed subtornal ocellus and a smaller ringed subapical ocellus. The female is somewhat similar to the male, but without the sex mark; there is a black basal streak in cell and another below cell, The spots above are usually od BY G. A. WATERILOUSE. 257 paler and smaller, that between the apex and subapical ocellus of forewing usually much darker. Ocelli as in male. Beneath, somewhat similar to the male, with the apex of forewing and the hindwing with a violet, pinkish or yellowish tint. The anal angle of the hindwing is slightly produced and the termen of hindwing wavy in Australian specimens. Both sexes have a general resemblance to H. merope Fab., but it has not so extensive a range. It is found in the mountains of N. S. Wales and Victoria. Also at an altitude and at sea-level in Tasmania. It has not been found in South Australia or Western Australia as stated in Seitz, Vol. ix. It has developed races both in Australia and in Tasmania. It has only one brood and rarely appears on the wing before the middle of January. My earliest dates are Dec. 30 from near Dorrigo, N.S.W., 4,800 ft.; Jan. 23 from Hobart and Cradle Mt., 2,000 ft. in Tasmania. I have examined 50 specimens from N. S. Wales, 40 from Victoria and 40 from Tasmania. The types of all the races are in the Australian Museum, Sydney. H. PENELOPE PENELOPE, nN. subsp. Satyrus philerope, Feisthamel, 1839, Voyage Favorite, Suppt., p. 16, Pl. 3, fig. 2, female; H. philerope, Waterh., What Butterfly is That?, 1932, Pl. xv, fig. 4A, female. This is the largest race. The male is much brighter than specimens from Victoria. The orange spot at end of cell of forewing is separated from the large subdorsal spot by a black bar; the subapical ocellus of the hindwing is sometimes without the white pupil. Beneath, the apex of forewing and the hindwing orange- brown, the remainder of the forewing yellow-brown with black spots; ocelli prominent. The female above is much darker than the male and the spots are smaller and paler. The basal streaks in and below the cell of forewing are well defined, as is also that of the hindwing; ocelli as in male. Sometimes there is an additional small ocellus in area 5 of hindwing. Beneath, the markings as in male, but the apex of forewing and the hindwing usually with a purplish or pinkish tint of varying intensity, rarely yellowish-brown. I have found this race commonly at Barrington Tops during the latter part of January and early in February. It was not seen during a visit in the middle of December. Holotype male, allotype female and paratypes are from this locality. I have a few specimens from New South Wales from Stonehenge (Mar.); Ebor 4,800 ft. (Dec. 30); Blue Mts. (Feb., Mar.); Moss Vale (Apr.) and Mt. Kosciusko 5,000 ft. (Feb.). H. PENELOPE STEROPEH, nN. subsp. H. philerope, Waterh. and Lyell, 1914, Butterflies of Australia, figs. 112-4, figs. 99, 116 aberrations; Waterh., What Butterfly is That?, 1932, Pl. xv, fig. 4, male. The male of this race is shaped like that of the previous race, is smaller, the orange on the upperside is paler, and the spot at end of cell of the forewing is usually connected with the large subdorsal spot in la. The subapical ocellus of hindwing is small and in one case absent. Beneath, the colour is not so deep as in the typical race nor is there so much difference between the basal two-thirds of the forewing as compared with that of the hindwing. The figure in ‘What Butterfly is That?’ is much too dark. The female has the spots of the upperside the same shade or darker and larger than those of the typical race, The spot between the apex and the subapical ~~ me @” 9 > Oe * 258 ON HETERONYMPHA PHILEROPE BOISD. ocellus of forewing above is darker than the other spots. Beneath, the purplish or pink tint is not so pronounced, most specimens having the apex of forewing and the hindwing yellowish-brown. The female has a greater resemblance to the male than is the case in the typical race. Several melanic specimens are known. Holotype male, allotype female and paratypes from Gisborne, Victoria, where it is usually common from Jan. to March. I have it also from Fern Tree Gully. H. PENELOPE ALOPE, nN. subsp. This is a still smaller race in which the black of the upperside is still further reduced. Both males in the Museum are without the subapical ocellus on the hindwing above. Beneath, the general colour is yellow-brown. I have only seen one female which approaches the more eastern Victorian race. It has a pale spot below the subapical ocellus of forewing above, a character sometimes found in females from Gisborne. Beneath, the spot below the subapical ocellus is almost white and the hindwing has a faint tint of purple. The ocelli are proportionately smaller than in sterope. Two males and one female from Lorne, Victoria, in February and March. H. PENELOPE DIEMENI, nN. subsp. This race resembles sterope, but the forewing is not so narrow nor the apex so pointed. The anal angle of the hindwing in the female is not so drawn out as in Australian specimens. It is also smaller. In the male the spots above are not so bright as in the mainland races, the pale spot at end of cell of forewing is not connected to the large subdorsal spot in holotype but is connected in four of the fifteen males before me from the type locality. On the hindwing the subtornal ocellus is prominent, but the subapical is small, without a pupil in the holotype, in two specimens it is absent and in six specimens an additional small ocellus is present in area 5. Beneath, this race is paler than the others, being yellowish-brown with the wavy lines on hindwing indistinct. The female resembles the male much more than in the other races and has a cream spot below the subapical ocellus of forewing above. Two of the three females from the type locality have the underside of the hindwing yellowish-brown, the other suffused purple. I have used the name diemeni as it was on some of Boisduval’s labels on his Tasmanian specimens. Holotype male, allotype female and paratypes from New Norfolk near Hobart in February; also from Hobart, Jan. 23; Mt. Wellington, 2,000 ft., in March; Dunally and Maria Is., in Feb.; I also place here a female from Launceston (F'eb.) and a poor pair from Burnie (Mar.). H. PENELOPE PANOPE, Nn. Subsp. This is the smallest and darkest race of all, and I have only males before me. On the upperside the orange spots are reduced in size and the spot below the subapical ocellus of the forewing is almost white in most specimens. Seven of the eight males before me have an additional ocellus in area 5 of the hindwing, and these both have a white pupil. On the underside the ocelli are well defined and are ringed and are the same number as above, the pale spot below the subapical ocellus of the forewing is even more prominent than above. The general colour of the apex of the forewing and the hindwing is reddish-brown. In the forewing the apex is less acute and the termen more bowed than in the Australian races. Eight males from Cradle Mt., Tasmania, 2,000 ft., in January, and one male from Mt. Magnet, also in January. 259 NOTES ON AUSTRALIAN MOSQUITOES (DIPTERA, CULICIDAE). PART Ill. THE GENUS AEDOMYIA THEOBALD. By I. M. Mackrrras, M.B., Ch.M., B.Sc. (Five Text-figures. ) [Read 29th September, 1937. ] The genus Aedomyia includes a small number of rare, ornate species, well separated from other genera, and forming such a compact group that at one time African, Oriental, and Australian specimens were all included in one species. Edwards (1929), however, recognized four species, one South American, two African, and one common to the Oriental and Australian regions. In the present paper, a fifth species is recognized, the distribution of the genus being: A. squamipennis Arrib. (South America: British Guiana), A. africana Nev.-Lem. (Africa: Uganda, Nyasaland), A. furfurea End. (Africa: Kamerun, Dar-es- Salaam), i DOD. —— , 1927.—A revision of the Culicine mosquitoes of India. Part XIX. Ind. JI. Med. Res... Xiv, d23-525. Epwarps. F. W., 1924.—A synopsis of the adult mosquitoes of the Australasian region. Bull. Ent. Res., xiv, 364. —————,, 1929.—-Mosquito notes. VIII. Bull. Ent. Res.. xx, 325-326. —, 1952.—Diptera. Fam. Culicidae. Wytsman’s Genera Insectorwm, 194th Fasce., 121-122. Taytor. F. H., 1914.—A revision of the Culicidae in the Macleay Museum, Sydney Proc. LINN. Soc. N.S.W., XxXxY>X); Z/AC=17°. It is optically negative and the elongation is positive. Biotite is occasionally present in small brown flakes, and contains lenses of prehnite (Joplin, 1936). JIron-ores are abundant in small rounded grains or octahedra and their form suggests magnetite, but the percentage of titania in the analysed rock indicates that it is probably a titaniferous magnetite; moreover, sphene is a common alteration product. Chlorite varies in amount. In the less altered types it may be seen filling cracks and fringing pyroxenes and often replacing certain zones in the plagioclase phenocrysts. In the more altered types the rock may be almost completely chloritized and appears distinctly green in the hand-specimen. More than one variety of chlorite is present, but the rocks are very fine-grained so that the chlorites cannot be separated and their refractive indices determined. A variety commonly associated with augite, however, has a yellowish-green colour, is optically negative, the elongation is positive, and the interference colours are low first order. It thus appears to be a variety containing very little alumina and a large propor- tion of iron and magnesia. Masses of chlorite, showing the characteristic ultra- BY GERMAINE A. JOPLIN. 265 blue of pennine, seem to have developed from the felspars of the groundmass. The rocks often contain solution-cavities filled with this mineral in association with carbonates and sometimes with a zeolite. Apatite is very sporadic in its development. In some rocks it is entirely absent, and in others is quite abundant and occurs as slender prisms or needles included in the minerals of the groundmass. Quartz occurs either as xenocrysts which show corrosion, or as a released mineral among the alteration products. It seems unlikely that any of the quartz is of primary consolidation. Some of the rocks are more albitized than others; in some there is a greater abundance of carbonates or of chlorite, and it is evident that widely different results would be obtained if these extreme types were analysed. All types, how- ever, show characteristic deuteric alteration, and in the rock chosen for analysis (column I below) no one of these processes has gained ascendancy over another. Although the alteration of the Hartley rock is deuteriec and characteristic, it is too altered for the norm to serve any useful purpose. | | Te Il. | IIL. | IV. | V. | | | SiO, 46°84 46-02 48°07 50°60 49-50 Al.O; 18°59 18-03 19-02 17-40 14-37 Fe.0, 5:75 7-17 7-65 4-57 6°55 FeO 4°86 2-78 | 4°83 6-29 5-84 MgO 3°89 | 4-83 3-30 4°89 7:75 Cad 9-06 Seas | Oy | 8-09 9-96 Na.O 2-21 3°31 | 2°84 | 3-23 2-50 k.0 0-80 | 1:33 | 0:63 1-76 0-84 ! | 9-47 | | r il Ae | 3-22 ae 1-83 0-66 TiO. 1°35 0:95 1:72 0-68 1:42 P.O; | abs. 0-35 abs 0-20 O-44 MnO by be ut 0-10 | = 0-21 0-46 0-17 CO, a 1 re os 2-81 | 2-90 abs. | — | _ Other Const. .. bed 2 | zee | — | 0:33 | == | — ao ae 99-58 | 99-57 100°56 100-00 | 100-00 IT. Altered Dolerite. Dyke on River Lett, between Lett and Glenroy Bridges. Anal. G. A. Joplin. Il. Melaphyre. Sommerberg, Thuringerwald. Anal. G. F. Steffen. In W.T., p. 876, No. 110. Til. Altered Diabase. Tamarack, Minnesota. Anal, A. W. Johnston. Tinea Vienne p. 868, No. 36. TV. Osann’s average melaphyre (Daly, 1914, p. 27). V. Osann’s average dolerite (Daly, 1914, p. 27). Name of the Rock. It is evident from the foregoing petrography and from the chemical analysis that the rocks have suffered much deuteric alteration, and this must be taken into consideration in naming the rock. The chemical and mineral composition and the mode of occurrence suggest some type of dolerite, 266 PETROLOGY OF HARTLEY DISTRICT. IV, As quartz occurs either as xenocrysts or as a released mineral, its presence cannot be taken into account; moreover, there is nothing else to suggest that the rocks may have been quartz-dolerites. Many of the less altered types, however, contain small quantities of brown hornblende, and the dolerites may thus be called hornblende-dolerites or protero- bases. The proterobase is regarded as a member of the spilite suite (Dewey and Flett, 1911) and, like all members of this suite, they are characteristically albitized and chloritized. These alteration products are quite common among normal basic rocks, and even if there be a spilite suite, there seems no reason why the Hartley dykes should not be regarded simply as deuterically altered dolerites, which some- times contain a little primary hornblende. Similar Dykes elsewhere in New South Wales. In the three granite areas examined by the writer, namely, Hartley, Sodwalls and Gumble, altered dolerite dykes have been found associated with granite. At Sodwalls one such dyke cuts the granite near Wilson’s Quarry on the Old Railway Line just north-east of Sodwalls'station. In the hand specimen and under the microscope this rock is identical with one from Hartley. Other similar dykes occur in the Sodwalls granite, but they have not been observed among the sedi- mentary rocks outside the contact aureole. At Gumble only one basic dyke is recorded. This may be observed cutting acid dykes about 800 yards from the granite contact in Portion 21, Parish of Gumble. Petrographically this rock also compares closely with Hartley and Sodwalls types. L. A. Cotton (1915) has described two large dolerite dykes at Copeton in the New England. These were investigated for an economic reason, as two diamonds in a doleritic matrix had been found in the area. The present writer has had the privilege of examining Professor Cotton’s slides, and has found that the Copeton and Hartley rocks compare very closely. The Copeton dolerites contain a little quartz and, though some of it appears to have been derived from the granite, as at Hartley, a part of it may be primary and the rocks may have affinities with the quartz-dolerites. At Copeton the dykes invade the acid granites of the New England Complex and are partly overlain by Tertiary basalts with which they have no petrological connection. Geological Age of the Dykes. The geological age of the Hartley dykes is uncertain. They are post-granite and pre-Kamilaroi, but that is all that can be deduced from the field evidence, although the fact that they are never found outside the contact aureole may have some significance. At Hartley, however, the Kamilaroi overlies the Upper Devonian Series on the north and east, and it is impossible to examine the older formation at any great distance from the contact-zone. Nevertheless, similar dykes at Sodwalls, at Gumble, and at Copeton, appear to be restricted to an area close to the granite. This slender evidence suggests that the dyke swarm belongs to the plutonic complex and it is pertinent to examine the chemical evidence. It has been pointed out that the analysed rock is characteristically altered and that, with its rather low magnesia, it compares with other altered doleritic rocks. Magnesia, therefore, appears to be lost during the process of alteration, and local concentrations of chloritized dolerite (see p. 265) suggest that MgO is subtracted from one part of the dyke and accumulated in another, BY GERMAINE A. JOPLIN. 267 The Hartley dykes show three types of alteration—albitization, chloritization and alteration to carbonates, and the rock chosen for analysis was one in which all three types were present in about equal amount. To some extent, therefore, the low magnesia must be regarded as an inherent property of the magma. In column II below, the dolerite has been re-calculated to 100% omitting carbon dioxide and water, both of which play an important part in the deuteric processes. Column III represents the composition of a hypothetical rock inter- polated from the variation-diagram of the Hartley plutonic series (Joplin, 1931, 1933). The high Al.0O, and MgO < FeO is noteworthy in the two analyses, and their close correspondence is suggestive, but not entirely convincing. Neverthe- less, in the absence of other evidence as to the age of the basaltic dykes, it seems reasonable to consider them as a late phase of the plutonic intrusion, which would correspond to the normal lamprophyric end-phase. Th, | Init, Ill. = SiO, MM RieE atreng A de 46-84 | 50-12 50°10 A105 ks i rm = 18:59 19-39 | 19-90 FeO; i as 316 a rl ons | || GolB. Woy oe eA Wow. FcO .. 486 | Songer eo BeTOM Me MgO Hi a o. - el 3.898 | 4-16 | 4°40 Cao .. u ¥ s as Ren 9-06 9-69 | 9-80 Na,O Ye: Ye ‘ os eh 2-21 2-36 | 2°15 TKO 4 « of; oe V3 5 om 0-80 0-86 | 0°80 HO + ps Be = ie nie Die eal — | = H,0— nS * oS = nl 0:87 — | — TiO, Ks ay er we ceaal 1°35 1:45 | 0-80 P.O; bn a ae xi fy abs. abs. | 0°35 MnO ee a cf th ill 0-10 0-10 | 0:15 CO; .. is * oe a sau oth) | — | — 99°58 | 100-00 | 99°35 e ae | I. Altered Dolerite. Dyke on River Lett between Lett and Glenroy Bridges, Hartley. Anal. G. A. Joplin. Il. Column I re-calculated to 100% omitting carbon dioxide and water. Ill. Hypothetical rock interpolated from variation-diagram of the Hartley plutonic series (Joplin, 1931). The Possibility of a Basaltic End-phase. The grain-size of the dolerites and their method of emplacement indicate that the granite was solid before the invasion of the dykes. The assimilation of some of the granitic material (Culey and Joplin, 1987), however, suggests that the plutonic rock may have been still hot when it was engulfed by the basic magma. Bowen (1915, 1928) has pointed out that the sinking and resorption of biotite and hornblende crystals during the granite stage of differentiation of a basaltic Magma will cause an enrichment of alkalis in the melt. The resorption of horn- blende crystals in the ‘hot liquid” will give rise to a series of more basic minerals such as olivine, augite and anorthite, and these will be precipitated, since they are not in equilibrium with the liquid phase. In this way it is possible to account for the late formation of basic lamprophyres in plutonic complexes. 268 PETROLOGY OF HARTLEY DISTRICT. IV. It seems not unreasonable to suppose that a doleritic rock may be derived from these basic constituents, and instead of the parallel development of an inde- pendent alkaline rock, it is possible that the concentrated alkalis and volatiles will react with the dolerite, causing albitization and other deuteric phenomena. Furthermore, Bowen (1928, p. 270) explains that the “hot liquid” necessary for the resorption of hornblende must be of the nature of a basaltic liquid, and if such be available at this late stage in the differentiation process, it is not unlikely that it could be injected without differentiation as basalt or dolerite dykes. Summary and Conclusion. A series of altered dolerite or proterobase dykes are described. These invade granite and the metamorphic rocks of its contact aureole, and it is suggested that the dykes may be an end-phase of the plutonic intrusion. Chemical evidence is adduced to support this suggestion, and the possible type of differentiation is briefly discussed. In conclusion, it is suggested that basaltic dykKe-rocks may take the place of, or occur with, lamprophyres as an end-phase in a plutonic series. In view of the fact that altered dolerite dykes have been found associated with granites in the only three granitic masses examined by the writer, it seems possible that careful search may reveal them in other areas. Granites and associated dyke-rocks are described from numerous mining regions, but in many cases the reports do not concern themselves with petrological detail and most of the basic dykes are said to be lamprophyres. It seems not unlikely that, if more detailed petrographic work be carried out, some of the “lamprophyre”’ dykes may prove to be of a basaltic nature. References. BaiLey, HE. B., and GRABHAM, G. W., 1909.—Albitization of the Basic Plagioclase Felspars. Geol. Mag., vi, 250. Bowgrn, N. L., 1915.—The Later Stages of the Evolution of the Igneous Rocks. Jow7n. Geol., Supplement xxiii, No. 8, 56. ——, 1928.—The Evolution of the Igneous Rocks, p. 269. Cotton, L. A., 1915.—The Diamond-Deposits of Copeton, N.S.W. Proc. LINN. Soc. N.S.W., SOodbs, IP, Ho SA, SSA, was. CULEY, ALMA G., and JOPLIN, GERMAINE, A., 1937.—Evidence of Magmatic Stoping in a Dyke at Hartley, N.S.W. Journ. Proc. Roy. Soc. N.S.W., |xx, 327-331. Dauy, R. A., 1914.—Igneous Rocks and Their Origin, p. 27. Dewey, H., and FuietrT, J. S., 1911.—On Some British Pillow Lavas and the Rocks asso- ciated with them. Geol. Mag., viii, 207. JOPLIN. GERMAINE A., 1931.—The Petrology of the Hartley District. I. The Plutonic and Associated Rocks. Proc. LINN. Soc. N.S.W., lvi, Pt. 2, 17, 39. , 1933.—Idem, II. The Metamorphosed Gabbros and Associated Hybrid and Contaminated Rocks. Ibid., lviii, Pt. 3-4, 148. — , 1986.—The Ben Bullen Plutonic Complex, N.S.W. Jowrn. Proc. Roy. Soc. IER Mivion Ibis Tbe 269 THE ECOLOGY OF THE UPPER WILLIAMS RIVER AND BARRINGTON TOPS DISTRICTS. I. INTRODUCTION. By Linian Fraser,* D.Se., and Joyce W. VicKERY,} M.Sc. (Plate xiv, two maps and ten Text-figures.) [Read 27th October, 19387.] The coastal districts of New South Wales are largely occupied by a forest formation dominated by species of the genus Hucalyptus. Two additional forma- tions are present, the sub-tropical and the sub-antarctic rain-forests. These occur east of the Great Dividing Range in sheltered areas of good soil and a high rainfall. Both these formations are usually to be found in isolated areas in river and mountain valleys or on soil derived from basalt. The sub-tropical rain-forest is found chiefly in the northerly parts of the State, and the sub-antarctic rain- forest at high elevations in the centre and north, and in Victoria. Hach isolated area of rain-forest is relatively homogeneous and usually has a characteristic composition, differing slightly in this from neighbouring areas. Those furthest south are depauperated and mixed with EHucalypt forest components. As one progresses north the forests increase in richness of species, and in complexity and density. Parts of the Eucalypt forest formation have been described in detail by Petrie (1925), Patton (1933), Petrie, Jarrett and Patton (1929), and Davis (1936). The only ecological work on New South Wales rain-forests is that of Brough, McLuckie and Petrie (1924), who examined an area of impure sub-tropical rain- forest on basaltic soil at Mount Wilson. A comprehensive account of the distri- bution of rain-forests in eastern Australia and the soil on which they occur is given by Francis (1929). Apart from these nothing has been published on the New South Wales rain-forests except lists of species found in localized areas (Maiden, 1894, 1895, 1898; Chisholm, 1934, 1937). Petrie, Jarrett and Patton (1929) described the impure sub-antarctic rain- forest of Victoria, and recently Tommerup (1934) described the sub-tropical rain- forest and Hucalypt forest formations in southern Queensland. Herbert (1935) has defined the area in Australia which should be suitable for the development of rain-forest, basing his calculations on temperature and effectiveness of precipita- tion. According to Herbert most of the coastal rain-forest of New South Wales occurs in the area of mild mesothermal climate, and the conditions of precipitation effectiveness favourable to the development of rain-forest are shown to be discontinuous. * Most of this work was carried out while the writer held a Linnean Macleay Fellowship in Botany. yj Assistant Botanist, National Herbarium, Sydney; previously Demonstrator in Botany, University of Sydney. EE 270 ECOLOGY OF UPPER WILLIAMS RIVER AND BARRINGTON TOPS DISTRICTS. I, Very little planned ecological work has been attempted on tropical rain-forests. The most important in recent years is that of Davis and Richards (1933-4) and Richards (1936) on the rain-forests of British Guiana and North Borneo. THarlier investigators have paid special attention to the climatic features of the environ- ment, and to the reaction of the individual species to these, or to the morphology of the component species, or to the general description of plant structures. The reasons for the lack of intensive work on rain-forests are the inacces- sibility of most areas, their complexity, and the difficulty of identification of the component species. The New South Wales rain-forests are, on the whole, accessible and their component species are moderately well known. In this series of papers a description is given of an area in the Williams and Allyn River valleys (latitude 32° S., longitude 151:5° HK. approx.) in which Eucalypt forests, and sub-tropical and sub-antarctic rain-forests occur. The structure and composition of these forests and the relationships of the rain-forests to the surrounding Hucalypt forest formation are discussed. Regeneration within the forest and along the margins is also described. For comparison brief accounts are given of rain-forests developed in the valleys of associated river-systems. Except for the Barrington Tops Plateau, the area studied forms part of the Chichester State Forest Reserve. This reserve includes the upper valleys of the Paterson, Allyn, Williams, Chichester and Wangat Rivers. Part of its southern boundary is shown in Map 1. Outside this boundary the country has been exten- sively cleared for grazing, but inside it is relatively untouched except for some areas in the lower sub-tropical rain-forest and Hucalyptus saligna forest where some timber has been cut. The northern limit of the Forest Reserve is the southern escarpment of the Barrington Tops Plateau. A small amount of grazing by cattle and horses during the summer is carried on on the Barrington Tops Plateau, but grazing is never heavy and does not seem to have caused any important change in the flora. The Williams River rain-forest area has been found especially interesting for study because it shows the following features: (i). The contiguity of two different rain-forest formations and their inter- actions with each other and with the Eucalypt forest formation. (ii). It is further inland than any other important area of rain-forest in New South Wales, and is separated from the coastal rain-forests by a zone of low rainfall. With the exception of the Gosford and Illawarra sub-tropical rain- forests it is also the most southerly development of this formation of any consider- able size. It is, therefore, in a position to yield interesting data relative to distribution and migration of rain-forest species from the north and east. (iii). There is relatively little variation in rainfall and soil fertility within the area occupied by the rain-forests. (iv.) Timber cutting has not yet been so severe as to destroy large tracts of the original flora. Before settlement, the Williams River rain-forest was fairly well stocked with good timber of large size. The most important economic species were: red cedar (Cedrela australis), rosewood (Dysoxylum Fraseranum), white beech (Gmelina Leichhardtii), and brown beech (Litsea reticulata). Most such valuable timber has been removed from the accessible parts, together with some sassafras (Doryphora sassafras), and blue gum (Hucalyptus saligna). The more inaccessible parts of the forest towards the head-waters of the river are, however, as yet relatively untouched. BY LILIAN FRASER AND JOYCE VICKERY. 271 Os FAcTorRS OF THE ENVIRONMENT. Physiography. 4 LIBRARY (a) General. . in A te The main dividing range, which for the most part is parallel with the coast- CON TULA line, has been cut back considerably by the western tributaries of the upper Hunter ? Pir \ > River, so that here it is further west than elsewhere in New South Wales. This ~ 2 La part of the range is also much lower than the areas to the north and south, and thus forms a gap 1,800 feet above sea-level which has been called the Cassilis Geocol. At the point where the main range swings west around the Hunter valley, a branch, the Mount Royal Range, diverges from it, trending south by south-east. This, increasing from about 2,000 feet to a maximum of about 5,000 teet, culminates in a plateau region, the Barrington Tops Plateau (Map 2). To the south the plateau has a decided margin or edge in the form of an escarpment (Plate xiv, fig. 2), and its boundary is also well defined te the west (Plate xiv, fig. 3), but in other directions the boundaries are less sharp. The western part of the Mt. Royal Range and the Barrington Tops separate the upper Hunter River and its tributaries from the southern tributaries of the Manning River (Map 2). From the southern escarpment of the Barrington Tops Plateau there runs a very striking series of parallel and relatively simple ridges which separate the Paterson, Allyn, Williams and Chichester Rivers, tributaries of the lower Hunter River (Plate xiv, figs. 1 and 2). To the east, ranges of decreasing size separate the head-waters of the Karuah and Gloucester Rivers. The topography of the Barrington Tops Plateau is of a mature nature, its height above sea-level being about 4,500-—5,000 feet. It extends about 6-10 miles in an east-west direction by about 15 miles in a north-south direction. It is part of a late Tertiary peneplain which once extended over the whole of eastern Australia, which has been raised and almost completely eroded. This small residual area is, however, partly undissected and must show in places much the same topography as it did before the uplift. On the plateau towards its southern extremity the landscape is characterized by undulating country with gently rounded hills rising to a height of 200 feet above the general level, and consider- able swamps which occupy the low ground between (Plate xiv, fig. 7). These swamps form the head-waters of the Barrington River, which flows in a general easterly direction. After leaving the plateau the Barrington River plunges into a deep, narrow chasm which is gradually cutting back and draining the swamps. To the south the plateau ends abruptly in the escarpment overlooking the heads of the Williams, Allyn and Paterson Rivers (Plate xiv, fig. 4). The northern part of the plateau is drained by the Pigna Barney, Tomalla, Gummi (Upper Manning), Dilgry and Morpey Rivers, whose courses show a sequence similar to that of the Barrington River. The only streams of any size which drain the plateau to the west are the tributaries on the eastern bank of the upper Hunter River, the Rouchel, Moonan and Stewart’s Brooks. In their upper parts these are entrenched to a considerable extent. » / 1, > (b). Detailed description of the area studied. The valleys of the Paterson, Allyn, Williams and Chichester Rivers, which arise from the southern escarpment of the Barrington Tops Plateau, are separated by ridges which are at first flat topped and fairly wide (Plate xiv, fig. 2). These diminish in height from 5,000 feet to 1,600 feet at Salisbury in the Williams River valley and Eccleston in the Allyn River valley, becoming progressively narrower as the valley floors increase in width and become flatter (Plate xiv, fig. 4). The bo ae] bo ECOLOGY OF UPPER WILLIAMS RIVER AND BARRINGTON TOPS DISTRICTS. I, Y mS @) oO eS ro} ¥ S od Qo Se Q+ Colts) a0 uw O's mao Yd+ed Hoe G& ot On OY Ao f] oO Pp Pre (op) 4 Q-H GFHOM ; Hav Eo LO tien . AnH Be H >duvn — OC OG Hy ao ofn2+rvrcye VUE V+ a i) Se OH Sees Ko} Aud O90 eS @ Pio aom Oh H On Gu joj m ow a « = 500 8 ao! a & 35 | S) lov 0 alae ! ac | = oe 1 o-7 re ay F ? Gate; CGE? iar) N JOYCE VICKERY. BY LILIAN FRASER AND (%s) Sudoy 1¥3S @ (a) w3alsyo4 w < 4 ny ~ =) e (a) G dVW [hs us SNIHIILS 1yod a [sq 3TLSVIMIN / (s | avewsidnoulth aN o | es Db NMQL3INIYI9 l /\ d is 7 A 7 Ine (s 4] \ Is Hv aaaving’s Ya ES a oF” atm a” YA =S) 7 A \ Za q / Sey ( soe / a MS {b¢} Qo 6 $f s JIySaIn0 Ww YW roGatavene f = / RS My yy), Zo | { HON IM, [Lz] -onss39 “SJ aAUOSIT Sod worpuyn et== 4p *Seyout ut [[ejutel Tenuue aBeraae ayy 9}yeOTPUT SUMOJZ JO SoUleguU a4 apTseq saan3tTy *sqaAYUOST ayy Butmous ‘suazshS JaATI Butpunorwims yytm LOIMLSIG SdOL NOLONIYYVE AHL ‘ 1 2 z) TOs (sz) | AWN SNivtg ] [he] / x sSrvaageat rt APY [DY2Noy a Ca (nz) 91S ¥any 2 Y Lente 274 ECOLOGY OF UPPER WILLIAMS RIVER AND BARRINGTON TOPS DISTRICTS. I, rivers have few affluents of any size, but the dividing ridges are dissected by numerous small creeks and therefore have a complex system of spurs (Map 1). The lateral slopes of the ridges are very steep, 15°-45° or more, being steepest near the plateau (Plate xiv, figs. 1 and 2). In the upper parts of the Allyn and Williams valleys occasional vertical rock faces occur. These are not numerous, as the nature of the rock causes it to weather into steep slopes. The lower parts of the main spurs and the lower spurs are less steep, and the small creeks which drain them are entrenched to a depth of 100-200 feet, so that their beds and sides are more sheltered than the crests of the spurs. The upper courses of the creeks which drain the flat parts of the ranges near the Barrington Tops Plateau have a tendency to be swampy. On leaving the tops of the ridges they become very steep and the creeks are deeply entrenched. The valley of the Williams River is 24 miles wide from ridge to ridge at the southern limit of the rain-forest (X in Map 1), and narrows gradually towards its source. It is enclosed by ranges averaging about 700-1,000 feet higher than the river bed, trending south-south-east and north-north-west. The valley floor and lower slopes are therefore shaded from the sun and sheltered from the winds to a greater degree than the upper slopes and crests of the ridges. Towards the head-waters of the river the country is very rough and its detailed topography is unmapped. The whole course of the river is marked by cataracts and falls as far south as Salisbury, so that the upper part is not much more entrenched in the mountains near its source than it is at 1,000 feet. The Allyn-Williams divide (the Williams Range) is uniformly high and protects the Williams valley from westerly winds. The Allyn River valley is rather wider than the Williams (about 3 miles) and the westerly mountain range is less uniformly high than the Williams Range, so that the lower part of the valley is less sheltered than that of the Williams at a corresponding point south. The head-waters of the Allyn River are entrenched about 3,000 feet below the southern escarpment of the Barrington Tops Plateau; this upper part of the valley is therefore as shaded and sheltered as any part of the Williams valley (Plate xiv, figs. 1 and 4). The Chichester-Williams divide (the Chichester Range) is more broken than the Williams Range, and the Chichester valley is therefore slightly less sheltered and shaded than the Williams and upper Allyn valleys. The valley is wider than that of the Williams, the slopes less steep, and the actual floor of the valley less flat. The head-waters are very sheltered. The different degrees of shelter met with in the three valleys have a marked influence on the vegetation. Geology. The writers are indebted to Dr. G. D. Osborne, of the Department of Geology, University of Sydney, for the following information. A large area of the Barrington Tops Plateau is occupied by quartz-monzonite and associated plutonic types in the form of a batholith. The remainder is composed of flows of basalt and sheets and sills of dolerite. This basalt also forms the tops of the ranges diverging from the plateau. The base of the basalt flows varies in height, but in the vicinity of the Williams River stands at about 1,800-2,000 feet above sea-level (Map 1). Below the basalt, occupying the valley floors and sides of the ridges, are Carboniferous sediments, chiefly impure limestone and mudstone. BY LILIAN FRASER AND JOYCE VICKERY. 275 Dr. Osborne concludes that after the Carboniferous sediments were laid down they were subjected to folding, and then eroded in the late Tertiary to a peneplain having as its surface Carboniferous sediments and some dioritic and monzonitic masses intrusive into the Carboniferous rocks and standing above them. Tertiary flows of basalt were poured on this, and later plugs and sills broke across the flows. The plutonic rocks outcropping on the plateau are evidently part of an old residual around which the flows of basalt were poured out. The great difference in the elevation of the plateau and the lowlands to the south has been attributed by some geologists to step faulting, throwing to the south, but no evidence has been found by Dr. Osborne in support of this view. He considers that the condition is due mainly to erosion. Soil. The Carboniferous sediments outcropping in the Williams and Allyn River valleys and ridges weather to form a light-coloured clay. Along the valley floor the soil may be of considerable depth and greyish to blackish-brown in colour with humus and material derived from the basalt rocks on the ridge tops. The usual soil of the valley sides and spurs is a yellowish clay which appears to be of considerable depth, while rock outcrops are rare. The basalt capping the ridges weathers to a chocolate-brown or dark grey, loamy clay. On the flat ridge tops and on the plateau, rock outcrops are very rare and the soil appears to be deep. On the steep upper sides of the ridges approaching the plateau, outcrops of partially decomposed basalt and occasional roek faces can be seen. The soil is deep in pockets, and does not appear to be washed off to any great extent because of the continuous vegetation cover. On the dioritic part of the plateau occasional rounded boulders occur as in typical granite country; for the most part the soil is a deep, slightly sandy loam. No detailed study of the soils derived from the various rock formations has been made. From field observations it appeared improbable that the nature of the soil or parent rock was a limiting or deciding factor in the distribution of the plant formations or the species within the area, except perhaps in rare instances. On the other hand, certain aspects of the soil, such as the humus content, were very obviously governed by the plant cover. It was therefore considered necessary at this stage to make only a few comparative tests on a number of representative samples from different localities and from the different plant formations, as illus- trations of the edaphic conditions of the area. The soil samples were all taken from about 5 cm. below the surface of the soil. Table 1 summarizes the results of analyses of the humus content, water- retaining capacity, pH, and some mechanical features of the soils tested. The soil textures were determined according to the method of Hardy (1928). The humus content was estimated by the hydrogen-peroxide method (Prescott and Piper, 1928). The pH was determined by the quinhydrone electrode method. The water-retaining capacity was obtained by estimating the percentage loss of weight from a saturated soil sample dried at 25° C. No. 1 soil sample is a chocolate-coloured fine silt taken from a typical part of the valley floor covered by sub-tropical rain-forest—No. 2 is a greyish-brown fine silt taken close to a small creek, and covered by sub-tropical rain-forest.— No. 3 is a yellowish fine silt taken from the lower slopes of a spur covered by sub-tropical rain-forest.—No. 4 is a greyish-brown fine silt taken near a creek, supporting Tristania conferta and some rain-forest trees.—No. 5 is a greyish-brown heavy loam from an area occupied by the margin of the sub-tropical rain-forest.— 276 ECOLOGY OF UPPER WILLIAMS RIVER AND BARRINGTON TOPS DISTRICTS. I, No. 6 is a greyish-brown fine silt taken from a ridge near No. 7, but from an advancing margin of the sub-tropical rain-forest.—No. 7 is a yellowish-brown heavy loam taken from the top of a ridge, supporting Eucalypt forest.—No. 8 is a greyish-brown fine silt taken high up on the slopes of the Williams-Allyn ridge and supporting a Eucalypt forest association.—No. 9 is a dark chocolate clay from the top of an exposed ridge, about 3,500 feet altitude, supporting Eucalypt forest.— No. 10 is a dark chocolate-coloured clay supporting sub-antarctic rain-forest, at an altitude of about 4,000 feet. No. 1 is river alluvium, No. 2 is derived from limestone, Nos. 3, 4, 5, 6, 7, 8 from mudstone, and Nos. 9 and 10 from basalt. The soils vary in texture from a heavy loam to clay, and have a fairly high water-retaining capacity. The marked difference between the figures for the loss on ignition and the humus content of most of the soils is accounted for by the presence of a considerable amount of finely-divided organic matter which cannot be separated from the soil, but which is as yet only partially decomposed. In some instances the soils were of such a peaty nature that on ignition they burned with a pronounced flame, e.g., sample No. 10. TABLE 1. Water- Soil Sand. retaining Loss at Loss on Humus Number. | Soil Type. Or Capacity. 100° C. Ignition. | Content. pH. | %. %- %. %. } 1 Fine silt 0 44 4-1 15°8 11-2 5:75 2 Fine silt Wow 34 2:5 10:7 6:7 4-45 3 Fine silt 5:5 38 5-2 Neer | 0°83 5:3 4 Fine silt £3 13:0 | 35 20 10-2 6-7 4-9 5 | Heavy loam .. 0 | 8:8 | 26 2-9 8:3 4-2 5-4 6 Fine silt | OlF2; | 42 4:5 18:6 10:9 4-9 7 \Eeimplntim se so.) Weer |) so 3-0 9:8 5-2 5:0 8 Fine silt ae ap | 11-4 | 35 4:7 11-8 7:0 5:2 9 Clay .. st aoe | 0:7 39 12-1 24-0 10-9 5°65 10 Clay pal. aU) lee pmetS 14-2 | 44-9 20°5 4-5 } i | | | | \ The surface of the soil in the sub-tropical rain-forest is covered by a layer of partly-decayed leaves and twigs to a depth of 1-3 cm. or more, depending on the position. An even greater amount is present in the sub-antarctic rain-forest, where, owing to the lower temperature, decay is probably slower. A considerable accumulation of dry and partly-decayed leaves and twigs is also present on the surface of the ground in the Eucalypt forest. The soil of the rain-forests is continuously damp, the more so at the higher levels. The soil of the Eucalypt forests is frequently dry. The upper Eucalypt forests are moister than the lower. Climate. (a). Rainfall and Winds. No rainfall data are available for the Barrington Tops Plateau, or for the upper parts of the river valleys draining it. The stations nearest to the area under investigation at which rain records have been taken are Wangat (6,017 points p.a., average for 6 years only) to the south-east of the plateau on the upper Chichester River, and Stewart’s Brook (5,704 points p.a.) to the west. Ratntall in pocats Rainfall wn points 24 a : SA R & sc e Z = mS = ~ i ¢ e JANUARY APRIL 8 TAMUARY 4 S SI a) a i gy ze 8 = Bu ~ : qs g 2 5 ig it » JANUARY ‘away ret hr 7 RTOBER | BY LILIAN FRASER AND JOYCE VICKERY. 277 OCTOBER Racnfall in points Text-figures 1-6 show the average monthly rainfall recorded for stations in the vicinity of the Barrington Tops. Text-fig. 1.—Stations east and south-east of the plateau in the dry belt. A, Stroud (average of 46 years); B, Dungog (average of 37 years); C, Gresford (average of 38° years). Text-fig. 2.—Stations in the Upper Hunter Valley west of the plateau. A, Moonan Flat; B, Rouchel Brook; C, Scone (average of 59 years). Text-fig. 3.—Stations north-west of the plateau, near the Mount Royal Range or Main Dividing Range. A, Murrurundi (average of 64 years); B, Nundle; C, Barry. Text-fig. 4.—Stations nearest to the plateau. A, Wangat (average of 6 years); B, Stewart’s Brook. Text-fig. 5.—Stations on highland areas to the north of the plateau.