SCALARIA. 71 



S. GRADATELLA, Morch. PI. 14, fig. 54. 



Narrow, white, polished; whorls 9, flatly convex, with about 11, 

 low lamellae, a little angulated above. Length, 12 mill. 



West Indies. 



Narrow, with more whorls than the preceding species. 

 S. UNIFASCIATA, Sowb. PI. 14, fig. 55. 



White with a single narrow chestnut band at the suture; whorls 

 about 7, with 6, straight, subcontinuous lamellae. Length, 15 mill. 



West Indies. 



S. UNDECIMCOSTATA, Morch. PI. 14, fig. 56. 



Solid, white or yellowish white, microscopically spirally striate; 

 whorls 6, convex, with deep suture and 11 regular, strong, subcon- 

 tinuous lamellae. Length, 10 mill. 



W. Indies. 



S. EBURNEA, Pot. et Mich. PI. 14, figs. 57, 58. 



Rather thin, smooth, white, shining, with obsolete spiral striae ; 

 whorls about 9, very convex, with deep suture, with 12-13 sharp 

 lamellae. Length, 20 mill. 



West Indies. 



The synonyms are S. fragilis, Hanley (fig. 57) S. albida, d'Orb. 

 (fig. 58), and probably S. ligata, C. B. Ad. Morch has mentioned 

 vars. pumilio and angusta. 



S. TERES, Bush. PI. 14, fig. 59. 



Thin, semi-transparent, very shining, bluish white with a delicate 

 pink apex; whorls about 9, very convex, crossed by about 27 very 

 thin, delicate lamellae, a little oblique, with an almost imperceptible 

 angle at the suture. Length, 4 mill. 



Cape Hatteras, N. Car. 



S. Nov-ANGLiaa, Couth. PI. 15. fig. 62. 



Thin, white, with here and there a rusty blotch ; whorls cylindrical, 

 barely touching, minutely decussated between the lamellae; whorls 

 10, crossed by eleven, somewhat oblique, delicate lamellae, not 

 continuous, a little aculeate at the top of the w r horls. L. 17'5 mill. 



A single specimen from a fish, caught off 



Cape Ann, Mass. 

 I know nothing of this species. 



