A. E. Verrill — Mollusca of the New England Coast. 173 



cal whorl is very small, closely and regularly coiled, largely covered 

 by the next whorl, which is at first smooth, then shows delicate spiral 

 lines which gradually become stronger ; the next two whorls are 

 covered with rather strong, elevated, spiral cinguli, unequal in size 

 and obtuse at summit, separated by interspaces of about the same 

 width. The first whorl below the nucleus has four or five cinguli ; 

 the next has one or more smaller lines in each of the interspaces be- 

 tween the primary ones ; the succeeding whorl has about ten to 

 twelve prominent cinguli, with some additional ones of smaller 

 size; on the lower whorls the cinguli become much more numerous, 

 covering the whole surface, the most prominent surrounding the 

 periphery and having three to five smaller ones between them; just 

 below the suture the cinguli are often less prominent than elsewhere, 

 and are rendered wavy by transverse ribs. The two upper whorls, 

 below the nucleus, are generally destitute of transverse ribs, or have 

 them but slightly developed ; on the succeeding whorls they become 

 somewhat more conspicuous ; they are broad, low, rounded at the 

 summit, nearly straight, but a little receding just above the middle 

 of the whorls, and are evenly spaced, having concave intervals about 

 equal to their own breadth. On the lower whorls there are about 

 twelve to fourteen of these ribs. Both the ribs and interspaces are 

 equally ci'ossed by the revolving cinguli, and their entire surface is 

 covered by fine, close, raised or slightly lamelliform lines of growth. 

 Outer lip sharp, thin, rather evenly rounded, contracted at the base 

 of the canal, which is moderately long, narrow, twisted, and a little 

 recurved. Aperture long-ovate, rather narrow, regularly incurved 

 on the inside. Columella strongly bent and spirally twisted in a 

 sigmoid curve. Operculum broad-ovate, obtusely rounded at the 

 anterior end, with the nucleus situated slightly Avithin the margin of 

 the inner edge, from which the lines of growth diverge in a sub- 

 spii'al manner. There is often a slight notch on the innei* margin, 

 just back of the nucleus. Epidermis inconspicuous. Color, in alco- 

 hol, pale pink or pinkish white, translucent, usually white or 

 yellowish white when dried. 



Length of one of the larger specimens, 21'"'"; breadth, 9""" ; length 

 of body-whorl and canal, 14""" ; length of aperture, 10"'"' ; its breadth, 

 4"'"'. Other specimens are decidedly stouter than the one measured. 



Station 2048 (No. 34,832) ; sta. 2051 (No. 35,259) ; sta. 2052 (No. 

 35,229) ; Sta. 2072 (No. 38,052) ; sta. 2076 (No. 35,149) ; sta. 2077 

 (No. 35,248); sta. 2084 (No. 35,185), in 547 to 1290 fathoms. It 

 occurred in most abundance at stations 2076, N. lat.. 41° 13', W, 



