204 the proceedings of the linnean society 



20. — Cymbium umbilicatum. 



Melo umbilicatus, Broderip in Sowerby, Species Conchyliorum, 

 1855, part 2, p. 8. 



Melo umbilicatus, Sowerby, Thes. Conch., vol. 1, p. 416, pi. 83, 

 fig. 29, 30. 



Hob. Low Island, Trinity Bay, North-East Australia ; Darnley 

 Island, Torres Straits. 



21. — Cymbium Diadema. 



Voluta diadema, Lam., Anim. Sans Vert., tome 7, p. 239. 



Melo Diadema, Broderip in Sowerby, Species Concliyliorum, 

 part 2, p. 5. 



Melo Diadema, Sowerby, Thes. Conch., vol. 1, p. 414, pi. 82, 

 fig. 1G, 17. 



Cymbium Diadema, Gray, Proc, Zool. Society, London, 1855, 

 p. 54. 



Hab. Darnley Island, Torres Straits. 



This common species is found upon all reefs and sandbanks in 

 the Straits ; and is used by the Trepang and Pearl shell collectors 

 for holding water. 



22. — Volutella flavicans. 

 Voluta flavicans, Gmelin, Syst. Nat. p. 3464. 



,, volvacea, Lam., Anim. Sans Vert., tome 7, p. 346. 

 „ „ Sowerby, Thes. Conch., vol. 1, p. 195, pi. 46, 



fig. 3, pi. 51, fig. 60. 



,, lugubris, Swainson, Exotic Conchology, 1841, p. 20, pi. 40. 

 „ ,, Catlow and Reeve, Conchologists, Nomenclator, 



p. 307, sp. 61. 



,, flavicans, Reeve, Conch, Icon., pi. 19, species 45b. 

 „ modesta, Wood, Suppl. Index, Test. 1828, p. 11, pi. 3, 

 fig. 24. 



,, signifer, Broderip, Proc. Zool. Soc, London, 1847, p. 232. 

 Volutella valvacea, Gray, Proc. Zool. Soc, London, 1866, p. 63. 

 Voluta flavicans, Crosse, French Journal de Conch., 1871, vol. 

 J 9, p. 296. 



