202 A. E. Verrill—Molliisca of the New England Coast. 



This species resembles the preceding in general appearance and in 

 the smooth, polished surface, but it is not so broad in proportion ; 

 the a])erture is more oblique, and ovate instead of circular, and there 

 is a small umbilical perforation, not found in the other. 



Cocculina leptalea Yen-ill, sp. nov. 



Plate XXXII, figures 20, 20a, 20&. 



Shell small, oblong-ovate, rather high, with a promiueut, small 

 compressed, strongly recurved, apex, Avith the tip small, strongly 

 incurved, in eroded specimens becoming free and overarching, situa- 

 ted at about the posterior third of the shell. 



The anterior slope of the shell is decidedly convex and consider- 

 ably longer than the posterior slope, which is nearly straight, but a 

 little concave beneath the apex ; the side-slopes are moderately con- 

 vex. The sculpture consists of strongly marked, raised, very thin, 

 and pretty regular concentric cinguli, which usually become finer 

 and much closer towards the apex, but continue nearly to the 

 extreme tip in perfect specimens; the intervals, on the lower part of 

 the shell are four times as wide as the cinguli, and are crossed by 

 numerous, fine, wavy, radiating lines, much finer and closer than the 

 cinguli, but easily visible with a lens ; in crossing the cinguli they 

 become a little thickened and give the margin of the latter a slightly 

 crenulated appearance when viewed from above. In some cases 

 these slight thickenings have the appearance of minute beads strung 

 along the upper margin of the cinguli. The aperture is oblong- 

 ovate, a little narrower anteriorly, with the sides a little compressed, 

 but still somewhat convex, and with the anterior and posterior mar- 

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

 pale yellowish white. Epidermis indistinct. 



Length of the largest s|)ecinien, 4""" ; its breadth, 2-8""" ; height 

 2-5"'"'. 



Station 203G, N. lat. 38° 52' 40", W. long. 69° 24' 40", in 1735 

 fathoms (No. 35,128), one dead ; and station 2038, N. lat. 38° 30' 30", 

 W. long. G!>° 08' 25", in 2033 fathoms (No. 38,079), one in wood, liv- 

 ing, figured type; and station 2105, N. lat. 37" 50', W. long. 73° 03' 

 50", in 1395 fathoms (No, 35,371), one living. 



At station 2038 a specimen occurred in decayed wood whicli liad 

 been bored by Xylophaga or lercdo. It was associated with 

 Cofciditia spiniiftra Jt'tl". :ind Idaa aryentea Jefl". 



