UNIVEE. 



NATICA. 



except near the suture and at the base with orange-brown, the 

 latter sometimes evanescent in places, or obscurely banded. 



Length, l-t5-2'25 inches. 



China, Moluccas. 



X. Cumingiana, Recluz (fig. 99), and ? N. pallium, Recluz, and 

 N. Draparnaudi, Recluz (fig. 100), are synonyms. N. effusa, 

 Swains, (fig. 92), is probably a pale-colored variety. 



N. RAVIDA, Souleyet. PL 15, fig. 38. 



Deeply perspectively umbilicated, globose, very solid, body- 

 whorl slightly obliquely flattened above ; white, covered with 

 a thin, rough, horny yellowish epidermis, columellar callus very 

 strong, white. Length, 28 mill. 



Payta, Peru (Souleyet) ; St. Elena, W. Columbia (Cuming). 



N. ORIENTALTS, Gmelin. PL 20, figs. 1, 2. 



Widely globose, plicate at the deep suture; umbilicus broad, 

 with a white central entering callus, aperture produced below ; 

 orange-brown, varying to yellowish white. 



Length, 1 -5-1 '75 inches. 



Singapore. 



It is N. eburnea, Desh., N. subfulva, Chemn. 



N. MAMILLARIS, Lam. PL 18, fig. t4. 



Conic ovate, deeply umbilicated, with a broad entering callus, 

 flesh-brown or orange-brown, base and columellar callus white. 

 Length, 2 inches. 



West Indies, Caribbean coasts of Central and South, 



America, Bahia, Brazil. 



It is N. brunnea, Linck,and N. Bahiensis, Recluz. N. pallium 

 of the latter author (p. 42), which I have made a doubtful syno- 

 nym of N. Powiaiana, may belong here ; it closely resembles 

 the present species, but the locality differs widely. 



N. OTIS, Brod. and Sowb. PL It, figs. 72, tO, 71; PL 19, fig. 91; 



PL 12, fig. 2. 



Conic ovate, yellowish white or light mouse-color, with a yel- 

 lowish or orange band at the suture ; umbilicus open, chestnut- 

 brown, together with the central entering callus ; interior of 

 aperture chestnut-color. Length, 1-1'75 inches. 



Gfallapagos Is, to Cape St. Lucas, L. Cal, 



