OF NEW SOUTH WALES. 257 



Pyramidella tcrebelloides, Reeve, Conch. Icon., pi. 1, sp. 8. 

 Hab. Darnley Island, Torres Straits, 20, 30 fathoms, sandy 

 mud. 



40. — Obelisuus tessellatus. 



Obeliscus tessellatus, A. Adams, Sowerby, Tlies. Conch., vol. 2, 

 p. 808, pi. 171, f. 10. 



Pyrqntidella tessellata, Reeve, Conch. Icon., pi. 1, sp. 4 a, b. 

 Hab. Darnley Island. Torres Straits, 20, 30 fathoms, sandy mud. 



41. — Obeliscus pulchellus. 

 Obeliscus pulchellus, A. Adams, Sowerby, Thes. Conch., vol. 2, 

 p, 808, pi. 171, fig, 20. 



Pyramidella pulchella, Reeve, Conch. Icon., pi. 4, sp. 24. 



Hab. Cape York, North Australia, 6, 12 fathoms, sand bottom. 



42. — Obeliscus aclis. 

 Obeliscus aclis, A. Adams, Sowerby, Thes. Conch., vol. 1, p. 811, 

 pi. 171, tig. 30. 



Pyramidella aclis, Reeve, Conch. Icon., pi. 4, sp. 25 a, b. 

 Hab. — Darnley Island, Torres Straits, 30 fathoms, sandy mud. 



43. -Turbonilla Darnleyensis, n. sp. 



Shell elongated, turreted, white, transparent, longitudinally 

 ribbed, ribs smooth, interstices between the ribs minutely latticed 

 with raised stria? ; whorls 16, flattened, suture impressed, last 

 whorl below the periphery smooth and shining, slightly convex, 

 aperture round, columella thickened, slightly curved, peristome 

 thick. 



Length 3^ lines, breadth f line. 



Hab. Darnley Island, Torres Straits, 30 fathoms, sandy mud 

 bottom. Seven specimens were found of this species, only one 

 perfect in the lot. 



44. — Turbonilla eximia, n. sp. 

 Shell subulate, turreted, very thin, white, whorls 9, roundly 

 convex, longitudinally prominently sharply ribbed, interstices 

 smooth, suture deep, the last whorl in front crossed with trans- 



