134 COCCULINA. 



gins bluntly rounded. The margin is thin, sharp, and plain. Color 

 pale yellowish Avhite. Epidermis indistinct. (Verrill.) 

 Length 4, breadth 2*8, height 2-5 mill. 



OtfS.-E., New England, in 1395 to 2033 fms. 



Cocculina leptalea Verrill, Trans. Conn. Acad, vi, p. 202, t. 32, 

 f. 20, 20a, 20b. 



C. dalli Verrill. 



Shell moderately elevated, with the front slope long and convex ; 

 the apex is small, acute, situated far back, nearly over the posterior 

 margin, and not turned to either side ; the posterior slope is abrupt 

 and concave. Aperture broad oblong-elliptical, with the margin 

 sharp and plain, muscular scars distinct. The sculpture consists, on 

 the anterior half, of numerous well marked but small, raised, radiat- 

 ing ribs, which are crossed by thin, raised, concentric lines of growth, 

 so as to form a row of small granules or vaulted scales along each 

 rib. Along the sides the ribs are fainter, and posteriorly they are 

 nearly obsolete, while the concentric lines remain distinct. Color 

 grayish-white. ( Verrill.} 



Length of aperture 6, breadth 4'3, height 3, length of anterior 

 slope 6 mill. 



OjfS.-E., New England 



Cocculina dalli Verrill, Trans. Conn. Acad, vi, p. 203. 



C. conica Verrill. 



Shell very small, thin, translucent, white, rather high, conical, 

 with a very broad-ovate or nearly round base and a prominent, sub- 

 spirally twisted apex, which is turned strongly backward, and 

 obliquely to the left. The subspiral apex is relatively rather large, 

 and the extreme tip seems to have been deciduous. The anterior 

 slope of the shell rises at first rather abruptly, and then becomes 

 very convex, forming the central and highest part of the shell, from 

 which it descends a little to the apex ; the posterior slope is concave 

 under the overhanging apex, and then descends with a short, abrupt 

 slope to the margin, which extends back but little beyond the apex. 

 The sculpture consists only of rather irregular, concentric raised 

 lines of growth, which run subspirally on the upper portion of the 

 shell. The animal in alcohol has a nearly round foot and two small, 



