266 Proceedings of the Royai Society of Victoria. 



Genus Amussium, Schumacher. 

 Amussium thetidis, Hedley. 



1902. Amusium thetidis, Hedley. Mem. Austr. Mus., 

 vol. iv., pt. 5, p. 304, f. 49. 

 Hab. — Ocean Beach, Point Nepean. 



Obs. — One valve only obtained, and sulnnitted to Mr. Hedley 

 for comparison with the type of A. thetidis ; he considers it to 

 be the same species. 



Family Ostreidae. 

 Genus Ostrea, Linnaeus, 1758. 



OsTREA AXGAsi, Sowerby. 



1871. Ostrea angassi, Sowerby, in Reeve. Conch. Icon., 

 vol. xviii., pi. 13, f. 27, erroneously numbered 

 28. 

 1878. Ostrea angasi, T. Woods. P.R.S. Tas., p. 56. 

 1886. Ostrea angasi, Tate. T.R.S. S A., vol. ix., p. 110. 



No. 166. 

 1901. Ostrea angasi, Tate and May. P.L.S. N.S.W., 

 vol. xxvi., pt. 3, p. 441. 

 Hab. — Western Port ; Port Phillip ; Port Albert. 

 Obs. — This species occurs commonly in the old beach deposits 

 of Port Phillip, also in the Pleistocene beds of West Melbourne. 



I 



