242 A. M Yerrill — Mollusca of the Neio England Coast. 



small smooth callus. The aperture is oblicjue, nearly circular, 

 encroached upon a little by the body-whorl. The lip is slightly 

 thickened, with the margin rounded. In some specimens there is a 

 slight, angular, posterior sinus, at the suture, and sometimes the 

 inner lip is a little thickened in the umbilical region. Color of all 

 our specimens white, but none of them appear to have been living, 

 although many are fi'esh and have a polished surface. 



Greatest diameter, 2-5™™; height, 1-5""° ; diameter of the aperture, 

 about 1""". 



Off Cape Hatteras, station 2109, in 142 fathoms (No. 35,731), about 

 thirty specimens. 



This species bears some resemblance to H. anomala D'Orb., but is 

 peculiar in having the whorls of the spire concealed, or nearly so, by 

 the last whorl. 



Ethalia multistriata VerriU, sp. uov. 



Rotella striata? D'Orbigny, Moll. Cuba, atlas, pi. 18, figs. 29-31. 



This shell, although resembling in most respects that figured by 

 D'Orbigny, differs in being more depressed, with a lower spire and 

 less prominent base. The spiral lines are much finer and more 

 numerous, and the inner lip is distinctly thickened opposite the 

 umbilicus. 



Shell small, much depressed, with the spire rising but very little 

 above the body-whorl, and with the base distinctly flattened. 

 Whorls about three and one half, separated by a distinct and slightly 

 impressed suture. The upper side of each whorl is depressed, but the 

 periphery is very convex and obtusely rounded. The nuclear whorl 

 is moderately large, smooth, translucent, and regularly coiled. The 

 entire upper surface,, below the nucleus, and most of the base, are 

 covered by very numerous fine, impressed, revolving lines, with 

 interspaces which are a little wider than the lines themselves. On 

 the inner half of the base, around the umbilicus, the spiral lines are 

 obsolete. Just below the suture there is a stronger groove or slight 

 depression, defining a small, subsutural, slightly raised ridge. The 

 surface is also covered with very fine, but distinct, impressed lines of 

 growth, which, in crossing the spiral lines, give them a slightly wavy 

 or })unctate appearance, and sometimes produce a minute and feeble 

 reticulated structure. The aperture is very oblique, broader than 

 long, with the anterior border somewhat flattened, the outer side 

 very convex, and with a slight, angular, posterior corner, or sutural 

 sinus, below which the body-whorl projects slightly into the aperture, 



