200 



with rounded basal angles and acute apical angle, its height is 

 4 mm. An individual variation has the anterior carina con- 

 spicuously elevated. 



Dredged in life, in 15 fathoms, in Backstairs Passage, by Dr. 

 Verco (several examj)les). The " Challenger " specimens were 

 obtained from 38 to 40 fathoms, off east Moncoeur Island, 

 Bass-strait. 



Torinia foveolata, Tate (ante p. 191). 



(236). Bittium estuarinum, Tate (ante p. 190). 



(228). Cerithiopsis marmorata, Tate (ante p. 190). 



Rissoina (Phosinella) horrida, Garrett. 



R. australis, Sowerby. 



Cape Northumberland in sheli-sand (one example). Also 

 Queensland and Viti Islands. 



(263). Rissoina (Phosinella) toxopleura, (nom. mut.j. 

 R. lirata, Angas, no7i Gould (1861). 

 I have specimens from King George Sound. 



PotamopyrgUS niger, <juoy and Galmard. 

 Faludina nigra, Voy. Astrolabe, t. 58, figs. 9-12. 

 An estuarine mollusc inhabitating Port Adelaide Creek, Coffin 

 Bay ; also in Tasmania ; 267 is, and 268 probably, congeneric. 



(299). Phasianella variegata, Lh. 



I do not consider P. Angasi (300) to be specifically distinct. 



(307). Astralium rutidoloma, Tate (ante p. 192). 



(316). Claneulus eonsobrinus, Tate (ante p. 193). 



Claneulus euchelioides, Tate (ante p. 193). 



(432). Thalotia negleeta, Tate (ante p. 194). 



CalliOStOma SpinulOSUm, Tate (ante, p. 195). 



Calliostoma eiliaris, Menke. 



Trochus eiliaris, Moll. Nov. Holl., p. 17 (1843); Tryon, Man. 

 Conch., vol. XL, p. 338. 



Of this, one of the largest species of the genus, measuring one 

 inch by one and a-quarter, three living examples were dredged in 

 Spencer Gulf by Dr. Verco. Menke records it from the north- 

 west coast of Australia, without any particular locality. 



Calliostoma australis, Broderip. 

 Tryon, op. cit., p. 348, t. 18, f. 23. 



This species belongs to S.W. coast of W. Australia, but has 

 been dredged off Normanville, St. Vincent Gulf, by Dr. Verco. 



