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 New South Wales. By George French 

 Angas, F.L.S., F.R.G.S., C.M.Z.S., &c. 



[Eeceived 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 ascer- 

 tained by me 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 my 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 distri- 

 bution, to form an appendix to my list of 1867. 



Class GASTEROPODA. 



Fam. Tritoniid^;. 



1. Tritonium labiosum. 



Triton labiosus, Wood, Index Test. Supp. pi. 5. f. 18. 



Tritonium rutilum, Menke, Moll. Nov. Holl. ; Reeve, Conch. Icon. 

 Triton, pi. 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 (Epidromtjs) brazieri, Angas, P. Z. S. 1869, p. 46, 

 pi. ii. f. 3. 



An elongately turreted shell with twelve varices. It is longitudi- 

 nally 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 

 2 inches. 



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 II., P. Z. S. 1867, p. 912). 



