420 A. E. Verrill — Mollt/sca of tin Xcin Enfjland Coast. 



junction of tlie li)) with the hody-whoil ; the columella is strongly 

 sinuous and twisted, its anterior margin forms a distinct ridge or fold 

 and another similar fold is situated at about the middle; the inner 

 lip is excavated in the middle and is thickened by a layer of white 

 enamel, which is continuous from the outer lip around to the anterior 

 margin. There is no operculum. Color white. 



Length, 12"""; greatest breadth, 8"""; length of body-whorl in 

 front, 10"""; length of aperture, V"""; its breadth, 4'""'. 



A living specimen (No. 44,646), was taken at station 2,234, in 

 816 fathoms, N. lat. 39° 09', W. long. 72° 03' 15". Another specimen, 

 but dead, w^as taken at station 2,217, in 924 fathoms. 



The last named specimen differs from the type in having the nod- 

 ules smaller and less prominent on the last whorl, while there are six 

 distinct but not very prominent revolving ridges; but the ribs and 

 nodules are sufficiently prominent on the preceding whorls. 



This species is remarkable for its solidity and the coarseness of its 

 ribs and nodules. It can easily be distinguished from all our other 

 shells by the character of the aperture, and especially by the colu- 

 mella-folds. 



Marginella Virginiana Verrill, sp. nov. 



Shell very small, rather slender, fusiform, with an elevated spire, 

 composed of three to four whorls, regularly tapered, with a subacute 

 tip, formed by a small, rounded, prominent nuclear whorl. Suture 

 distinct. Body-whorl elongated, fusiform, with the basal part much 

 tapered. Aperture small, oblique, narrow behind, wider in front, 

 canal a little expanded at the tip. Outer lip thickened within and 

 without, usually a small denticle stands close to the posterior sinus. 

 Pillar with four thin prominent folds, the posterior one nearly trans- 

 verse ; the anterior very oblique. Surface and somewhat polished. 



The color is plain, but varies from grayish or yellowish-white to 

 cream-color and pale chestnut-brown, rarely slightly flecked or faintly 

 banded with lighter and darker tints. 



The largest example from station 2307, in 43 fathoms, is 5""" long ; 

 breadth, 2-6""" ; length of aperture, 3""". Many specimens are more 

 slender than this. A small one from station 2265, is 2""" long; 

 breadth, 1""". 



This species occurred in considerable numbers at station 2272, off 

 Cape Hatteras, in 15 fathoms (No. 44,834) ; also at station 2307, in 

 43 fathoms; and at station 2265, off" Chesapeake Bay, in 70 fathoms, 

 one example. 



