^"189^''] PROCEEDINGS OF THE NATIONAL MUSEUM 445 



242. Mitrularia corrugata Brod. 

 =Calyptr(Ba corrugata Auct. 

 James Island, Albatross. 



243. Mitrularia varia Hrorl. 



Hood, Charles, and Bindloe islands, Wiminer; Galapagos Islands, 



Carpenter. 



243a. Mitrularia bj). 



=Calyptra;a sp. 



Charles Island, Petrel (probably belongs to one of the preceding). 



Genus CRUCIBULUM Schumacher. 



244. Crucibulum imbricatum Brod. 



James Island, Albatross. 



245. Crucibulum spinosum Shy. 



Chatham Island, Jones. 



OcnuH CREPIDULA. Lamarck. 



246. Crepidula aculeata Gmelin. 



Indefatigable and Jlood Islands, Albatross. 



GeiiuK TROCHATELLA Lesson. 



247. Trochatella radians Lamarck. 



Galapagos Islands, National Museum. 



Family AMALTOEID^. 



Genus AMALTHE A .Sclmniacher. 



248. Amalthea Grayana Menke. 



Hood, Cluithain. and Indefatigable ialandn, Albatross ; Hood, Charles, 

 and Jjiiidloe islands, Wiinincr; Galapagos Islands, Carpenter. 



248a. Amalthea Grayana Mke. variety. 

 Charles Island, Petrel. 



249. Amalthea antiquata Linn^. 



Hood Island, Wimmer ; Chatham Island, Jones; Indefatigable Island, 



Albatross. 



250. Amalthea barbata .Sl)y. 



Chatham, .Tones, Indefatigable, and Hood iaVdudH, Albatross; Chat- 

 ham Island, Jones; Galapagos Islands, Carpenter. 



251. Amalthea ? subrufa Sby. 

 Galapagos Islands, Wimmer. 



