A. E. Veirlll—Mollusca of the Nevn England Coast. 169 



The cingiili, which are very iiumeruiis on the lower whorls, are mostly 

 thin, fine, and much elevated, but are rendered conspicuous by the 

 close row of fine, sharp, epidermal hairs rising from each spiral line. 

 The lines of growth are very numerous and close, thin, raised lamellae. 

 The suture is not very oblique and a little impressed, and has a wavy 

 01' crenulated outline, due to the ribs, which extend to the suture, both 

 above and below. The nucleus is rather small, composed of about 

 two whorls. The apical whorl is very small, smooth, and regularly 

 coiled, but only a little exposed ; the second whorl shows traces of 

 spiral lines. The outer lip is sharp, thin, regularly curved, and not 

 very convex. The coluraella-lip is strongly excavated in the middle, 

 and the columella-margin has a strong sigmoid curvature and a spiral 

 twist. The canal is rather broad, moderately long, rather strongly 

 bent to the left, and a little turned up at the end. The aperture is 

 elongated-ovate, with the inner margin a little more convex than the 

 outer. The operculum is long-ovate, rounded posteriorly, but with 

 the anterior end narrowed and a little incurved on the inner mar- 

 gin^ near the anterior end, but somewhat dilated into a rounded lobe 

 in the middle ; the nucleus is situated on the inner margin, close to 

 the anterior end. Epidermis distinct, finely hairy along the spiral 

 lines, dull greenish yellow in color. In alcohol the shell is dull 

 pinkish white, and the young specimens are more or less translucent. 

 Length of one of the larger specimens, 25™"' ; breadth, 14""^ ; 

 length of body-whorl and canal, 19-5'"'"; length of aperture, 15™""; 

 its breadth, 5-5'"'". 



Station 2115, N. latitude 35" 49' 30", W. longitude V4° 34' 45", in 

 843 fathoms (No. 35,600). Many specimens, both young and adult, 

 part of them living. 



Some of the specimens show considerable variation from the type 

 described. In some the spiral cinguli are larger, more prominent, and 

 more unequal in size, three or more smaller ones being usually situated 

 between the more prominent ones on the lower whorls. The suture 

 in some cases is deeper and slightly channelled. 



This species is more nearly related to S. ccalatus, var. hebes, than 

 to any other described species, but it is a larger, much stouter and 

 coarser species, with the spiral sculpture more conspicuously developed, 

 and with a distinctly hairy epidermis. The canal is longer and much 

 more bent. The nucleus is larger and somewhat different in form. 

 The typical form of S. coelatus is still more slender, and has a deci- 

 dedly higher and more regularly tapered spire, with the suture much 

 more impressed. 



