284 BULLETIN OF THE 



Genns CRTJCIBULUM Scuumacher. 



Crucibulum auricula Gmelin. 



Patella auricula Gmelin, Dillvvyn's Cat., IL p. 1017, 1817. 

 Crucibulum planatum Schumacher, Essai, p. 182, 1817. 



Habitat. Off Sombrero, in 54 fms. Gulf of Mexico, U. S. Fish Commission. 



The above is the first specific name in binomial form, and it was applied 

 to the West Indian shell. It should, therefore, take precedence of all others, 

 including that of Gray adopted by Tryon. 



Section DISPOTiEA Sat. 



Crucibulum striatum Sat. 



Habitat. Northward from Vera Cruz, Mexico, and the Antilles, to Grand 

 Manan Island, Bay of Fundy. Off Sand Key, Florida, in 128 fms. 



Genus CALYPTR^EA Lamarck. 



Calyptrcea Lamarck, Essai, p. 78, 1799 (not of Syst., 1801). 

 Galerus Humphrey, Mus. Calonnianum, p. 5, 1797 (undescribed). 



Calyptraea Candeana Orbignt. 



Infundibulum Candeanum Orbigny, Moll. Cuba, II. p. 100, pi. xxiv. figs. 28, 29, 1842. 



Galerus Candeanus Dall, Hemphill's Shells, p. 335, 1883. 



Galerus parvulus Dunker, Jahrb. Deutsch. Mai. Ges., 1875, p. 244. 



Habitat. Yucatan Strait, dead, in 640 fms. Province of St. Catherine, 

 Brazil, northward to the Antilles, Florida, and the coast of North Carolina, 

 living, in 12-50 fms. 



This species appears never to attain a greatest diameter of over 12.0 mm.; 

 most of the specimens I have seen are less than half this diameter. It is more 

 elevated than C. chinensis and the spirality is more conspicuous, while there 

 are numerous strong incremental lines, and an absence of the pustules charac- 

 teristic of the European species. 



Genus CREPIDULA Lamarck. 



Crepidula Lam., Essai, p. 78, 1799. 



Proscenula Perry, Conch., pi. liii. and espl. text, 1811. 



In most manuals and books of reference the animals of this family are said 

 to protect their e-gs "imder the foot" while developing. I have exammed 

 Crucibulum imbricatum and Calyptrcea conica Broderip, as well as Crepidula 



