58 SO AL ARIA. 



S. STATUMINATA, Sowb. PI. 12, fig. 60. 



Narrowly perforated, short, thick, whitish; whorls 8, round- 

 shouldered, with few, thick, obliquely continuous varices. 

 Length, 15 mill. 



Payta, Peru. 

 S. OBTUSA, Sowb. PI. 12, fig. 61. 



Subimperforate, rather ventricose, white ; whorls 6-7, convex, 

 contiguous, with rather numerous, thin lamellae, obtusely angu- 

 lar above. Length, 18 mill. 



St. Elena, W. Co. Central America. 



S. KREBSII, Morch. PI. 12, figs. 62, 63. 



Narrowly umbilicated, polished, irregularly spirally striated, 

 white, light fulvous about the middle of the whorls ; whorls 5-6, 

 scarcely joined, convex, slightly plane above, lamellae ten, a 

 little uncinate at -the suture. Length, IT mill. 



St. Thomas and St. Martin, W. Indies. 



S. SWIFTII, Morch. PI. 12, fig. 64. 



Scarcely perforate, white, polished, with very obsolete spiral 

 striae; whorls 7-8, with rimate suture, lamelhe about twelve, 

 subcontinuous, not produced above. Length, 14 mill. 



St. Thomas, W. I. 

 S. INCONSPICUA, Sowb. PI. 12, fig. 65. 



Narrowly umbilicated, ventricose, short, white; whorls 6, 

 well rounded, with numerous, close, ver} T thin lamellae. 

 Length, 13 mill. 



West Indies. 

 Morch indicates a var. INFLATA. L. 9, lat. 5'5 mill. 



S. NANA, Jeffreys. PI. 12, fig. 66. 



Narrowly umbilicated, semitransparent, not glossy, whitish, 

 with a few spiral striae ; whorls 7-8, convex, with about thirty 

 close lamellae. Length, 3'75 mill. 



Bay of Biscay. 

 S. BREVIS, d'Orbigny. PI. 13, fig. 4. 



Widety umbilicated, thin, whitish ; whorls 4, obtusely angu- 

 lated on the periphery, spirally striate, with narrow, distant, low 

 lamellae. Length, 1 mill. 



Falkland Is. 



Evidently a very young shell. 



