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Show 1871.] MR. G. F. ANGAS ON AUSTRALIAN MOLLUSCA. 87 8. A List of Additional Species of Marine Mollusca to be included in the Fauna of Port Jackson and the adjacent Coasts of N e w South Wales. By G E O R G E F R E N CH A N G A S , F.L.S., F.R.G.S., C.M.Z.S., &c. [Received January 11, 1871.] In the year 1867 I published in these 'Proceedings'* a list of all the species of marine mollusks which up to that date had been ascertained by m e to inhabit Port Jackson and the waters in its vicinity. Since then many additional forms have been obtained, a number of which were new to science and have lately been described; whilst others, though well known, had not hitherto been met with in the particular region towards which m y researches have more especially been directed. I am particularly indebted to Mr. John Brazier of Sydney for dredged specimens and positive information regarding the habitat of very many species; also to Dr. Cox of Sydney for notes on the localities of certain shells concerning which I had hitherto been in doubt. As molluscan discoveries progress, many new species and even genera will doubtless be brought to light from so prolific a region; in the mean time I add the following list of 109 additional species, together with a few remarks on their characters, habits, and distribution, to form an appendix to m y list of 1867. Class GASTEROPODA. Fam. TRITONIID^E. 1. TRITONIUM LABIOSUM. Triton labiosus, Wood, Index Test. Supp. pl. 5. f. 18. Tritonium rutilum, Menke, Moll. Nov. Holl.; Reeve, Conch. Icon. Triton, pl. 14. f. 52 a, b, c. A small compact species, longitudinally ribbed, and transversely grooved, somewhat variable in form. Length about 10 lines. Found alive on Shark Island, Port Jackson (Brazier). 2. TRITON (EPIDROMUS) BRAZIERI, Angas, P. Z. S. 1869, p. 46, pl. II. f. 3. A n elongately turreted shell with twelve varices. It is longitudinally ridged, and reticulated with irregular impressed striae. There is a dark fascia on the middle of each whorl, and also a series of small spots at the lower edge of the fascia of the last whorl. Length Lake Macquarie and Cape Solander, Botany Bay (Brazier). * "A List of Species of Marine Mollusca found in Port-Jackson Harbour &c." (Part I., P. Z. S., 1867, p. 185; Part IL, P. Z. S. 1867, p. 912). |