• EEPORT ON THE GASTEROPODA. 461 



Trochus calyptrceformis, Delessert, Reoueil, pi. xxxiv. fig. 7. 

 Trochita calyptrceformis, Reeve, Conch. Icon., vol. xi. pi. iii. fig. 1. 



„ (Haliotidea) calyptrceformis, Angas, Port Jackson Moll., Proc. Zool. Soc. Lond., 1867, 



p. 211, No. 154. 

 Trochella calypitrceformis, Gray, Calyptrseidoe, Proc. Zool. Soc. Lond., 1867, p. 736, sp. 2. 

 Trochita calyptrceformis, Sowerby, Thes. Conch., pts. 39, 40, p. 63, sp. 10, pi. ccccl. (Fam. vi.) 



figs. 85, 86. 



Station 162. April 2, 1874. Lat. 39° 10' 30" S., long. 146° 37' E. Off East Moncceur 

 Island, Bass Strait. 38 to 40 fathoms. Sand and shells. 



April 17-18, 1874. Port Jackson, Sydney. 2 to 10 fathoms. 

 April 23, 1874. Port Jackson, Sydney. 6 to 15 fathoms. 



Habitat. — Brune Island, Van Diemen's Land (British Museum) ; Port Jackson (Angas). 



2. Calyptrcea pileus (Lamarck). 



Trochus pileus, Lamarck, Anim. s. vert., vol. vii. p. 11, and (ed. Desh.) vol. ix. p. 124, sp. 6. 



„ „ Delessert, Recueil, pi. xxxiv. fig. 5. 



Trochita corrugata, Reeve, Conch. Icon., vol. xi. pi. ii. fig. 9. 

 Clypeola corrugata, Gray, Calyptrseidae, Proc. ZooL Soc. Lond., 1867, p. 735. 



Station 315. January 26-28, 1876. Lat. 51° 40' S., long. 57° 50' W. Port Stanley 

 and Port William, Falkland Islands. 5 to 12 fathoms. Sand and gravel. 



Habitat. — Falkland Islands (Gray) ; Peru (Reeve). 



I have not quoted Sowerby (Thes. Conch., pts. 39, 40, p. 64, sp. 15, pi. ccccli. figs. 97, 98, 

 Trochita spirata, Fork, Trochita irilens, Lam., var.) for this species, my acquaintance with the form 

 Forbes has described as distinct (Proc. Zool. Soc. Lond., 1850, p. 271, pi. xi. fig. 1) not being 

 sufficient to make my opinion regarding it of any value, and Sowerby gives no other representation 

 of Lamarck's species. Between the two it is Lamarck's, not Forbes' form, which the Challenger 

 shell resembles. 



5. Mitrularia, Schumacher, 1817. 



Mitrularia uncinata (Reeve). 



Calyptrcea uncinata, Reeve, Conch. Icon., vol. xi. pi. v. fig. 17, a and b. 



Calyptra tectnm-sinense, Gray, Calyptraeidae, Proc. Zool. Soc. Lond., 1867, p. 747. 



Calyptra uncinata, Sowerby, Thes. Conch., pts. 39, 40, p. 56, sp. 5, pi. ccccxlvi. (Fam. ii.) fig. 28. 



May and April, 1873. North Atlantic. Deep water. 



(?) Station 113a. September 2, 1873. Lat. 3° 47' S., long. 32° 24' 20" W. 

 Anchorage, Fernando-Noronha. 7 to 25 fathoms. Volcanic sand and gravel. 



Station 122. September 10, 1873. Lat. 9° 5' S., long. 34°50'W. Off Pernambuco. 

 350 fathoms. Red mud. 



Habitat. — St Thomas, West Indies (Reeve) ; the Philippine Islands (Gray). 



