https://ptsldigital.ukm.my/jspui/handle/123456789/388893 Tue, 29 Sep 2026 14:47:05 GMT 2026-09-29T14:47:05Z https://ptsldigital.ukm.my/jspui/handle/123456789/784925 Title: The shallow-water barnacles (cirripedia: lepadomorpha, balanomorpha) of southern Western Australia. Authors: Diana S. Jones Editors: Fred E. Wells; Diana I. Walker; Hugh Kirkman; Roger Lethbridge Abstract: Thirty one species of shore and shallow-water barnacles have been collected from southern areas of Western Australia. Each species is fully described and illustrated and a key to the suborders and families is included to facilitate identification. The barnacles exhibit a large cosmopolitan component (51%), a relatively high Australian endemic element (19%) and smaller elements with Australasian (10%), Indian Ocean/Malay Archipelago (10%) or Indo-West Pacific (10%) faunal affinities. Members of the family Chthamalidae are absent from shores in the southern Western Australian region. Shore zonation shows a tetraclitid-balanid pattern, rather than the chthamalid-tetraclitid-balanid zonation characteristic of south-eastern and north-western Australian shores. Possible reasons for this contracted zonation pattern and for the paucity of barnacles in south-western areas of Australia are discussed. https://ptsldigital.ukm.my/jspui/handle/123456789/784925 https://ptsldigital.ukm.my/jspui/handle/123456789/784924 Title: Sacoglossa (=ascoglossa) (mollusca, opisthobranchia) from southern Western Australia Authors: Kathe R. Jensen; Fred E. Wells Editors: Fred E. Wells; Diana I. Walker; Hugh Kirkman; Roger Lethbridge Abstract: Seven species of the opisthobranch order Sacoglossa (=Ascoglossa) are recorded from southern Western Australia. Three of these are shelled species. Ascobulla fischeri (Adams and Angas, 1864) and Oxynoe viridis (Pease, 1861) are redescribed, and Volvatella ventricosa n. sp. is described as the third green species of Volvatella. In the Elysiidae, Elysia australis (Quoy and Gaimard, 1832) is redescribed. A new species, Elysia filicauda, with an extremely long, thread-thin tail, is also described. It feeds on the siphonalean green alga ? Acetabularia peniculus and has a unique method of copulation. Elysiella pusilla Bergh, 1872, is identified as a senior synonym of Elysia halimedae Macnae, 1954. Its radular teeth are peculiar in having narrow, hollow cusps with unilateral denticles. A new species of the rare genus Pattyclaya, P. brycei n. sp., is also described. It has numerous transverse lamellae containing branches of the digestive gland on the distal, inner surface of the parapodia. Its radular teeth are blade-shaped and smooth. The Sacoglossa (=Ascoglossa) are almost exclusively herbivorous opisthobranchs, feeding on the cell sap of algae or seagrasses. The Sacoglossa comprise shelled as well as non-shelled species. Some shelled species have a well-developed shell into which the animal can withdraw completely. Others have a reduced shell covering only the visceral mass, and a few have a bivalved shell. https://ptsldigital.ukm.my/jspui/handle/123456789/784924 https://ptsldigital.ukm.my/jspui/handle/123456789/784923 Title: Splanchnotrophus elysiae n. sp. (Copepoda; Splanchnotrophidae) found parasitizing in the sacoglossan opisthobranch Elysia australis (Quoy and Gaimard, 1832) Authors: Kathe R. Jensen Editors: Fred E. Wells; Diana I. Walker; Hugh Kirkman; Roger Lethbridge Abstract: A new species of parasitic copepod, Splanchnotrophus elysiae n. sp. is described from the sacoglossan opisthobranch Elysia australis (Quoy and Gaimard) from southern Western Australia. The female copepod is about 1 mm long and brightly orange in life. It has a heavily sclerotized abdomen, which penetrates the epidermis of the host, and which bears the paired egg sacs. The male copepod is about 0.5 mm long and not as strongly modified as the female. The occurrence of copepods endoparasitic in shell-less opisthobranchs has recently been reviewed (Jensen, 1987). Seven species of the genus Splanchnotrophus have been described previously (Monod and Dollfus, 1932; Jensen, 1987). Apart from S. sacculatus (O'Donoghue, 1924), which was described from Australia, these are all north-east Atlantic and Mediterranean species. Most of the records are from aeolid nudibranchs (Jensen, 1987). In connection with the International Workshop on the Marine Biology of the Albany Area, Western Australia, a number of Elysia australis (Quoy and Gaimard, 1832) were collected intertidally in Eagle Bay, Cape Naturaliste, Western Australia. Several of these had orange markings on the parapodia, which on closer examination turned out to be parasitic copepods. A few of these had a pair of external egg sacs protruding through the dorsal epidermis of the host. During examination of numerous specimens of E. australis in the collections of the Western Australian Museum, a few more specimens infected by these copepods were found. These have been included in the present study. The parasitic copepod from Elysia australis is here described as a new species of the genus Splanchnotrophus. https://ptsldigital.ukm.my/jspui/handle/123456789/784923 https://ptsldigital.ukm.my/jspui/handle/123456789/784922 Title: Additional new species of the family Terebellidae (Polychaeta) from Western Australia, with a key to all described species of the region Authors: P.A. Hutchings; C.J. Glasby Editors: Fred E. Wells; Diana I. Walker; Hugh Kirkman; Roger Lethbridge Abstract: The terebellid fauna of Western Australia includes 39 species, of which six are new; one new species belongs to a new genus: Streblosoma dytikos n.sp., Lanice sinata n.sp., Lanicides attenuata n. sp., Pista anthela n. sp., Pista kimberleyensis n.sp., and Pseudoproclea australis n.g., n.sp. Many species and several genera are recorded for the first time from Western Australia. These records often represent considerable range extensions and include several genera previously known only from the Eastern seaboard. A key to the genera and species is given. Hutchings and Glasby (1986a, 1987, 1988) have recently revised the polychaete family Terebellidae in Australia. However, when this revision was undertaken, little material from Western Australia was available for study. During 1987 and 1988, extensive collecting trips were made to Albany, south-western Australia (January, 1988), the Perth area (January, 1988), Dampier Archipelago (March / April, 1987) and the offshore islands in the Kimberley region in north-western Australia (July, 1988). These trips yielded several new species and considerable range extension for many species. Since many of these species have only recently been described by Hutchings & Glasby (1986a, 1987, 1988) full descriptions and synonymies are not given, although additional variation is described. Similarly habitat notes for previously described species are only given for the Western Australian localities in the Material Examined section. Collections at the Western Australian localities were made by SCUBA diving and involved collecting clumps of encrusting organisms and algal holdfasts. In the tropical locations pieces of coral substrate (predominantly dead), or coralline algae were collected and broken to extract the polychaetes. At all localities, extensive intertidal collections were also made, including crevice and encrusting fauna and sediment infauna. In the Kimberley region, the spring tidal range is about 10 m and extensive mud/sand flats are exposed and the intertidal basaltic rocks split easily often revealing numerous terebellids. The coral reefs in the Kimberley region are subjected to heavy siltation and strong currents, and filter feeding organisms are abundant. Limited collecting was also carried out in the mangroves in the Dampier Archipelago and the Kimberley region. The only habitat not adequately sampled in these localities was shallow subtidal soft sediments. https://ptsldigital.ukm.my/jspui/handle/123456789/784922