A. E. Verrill — 3Iollusca of the Neio England Coast. 415 



intervals usually considerably exceeding tlieir breadth, but becoming 

 narrower at the base of the canal, much smaller and less distinct on 

 the subsutural band and usually absent on its upper part. On the 

 lower whorls of the spire there are usually about four of the larger 

 revolving cinguli, of which the uppermost forms the carina at the 

 shoulder; they cross alike the ribs and their intervals, often rising 

 into little tubercles in crossing the ribs. The nucleus is small, regu 

 larly tapered, very acute, the first whorl being very minute; its 

 whorls are minutely reticulated by two sets of fine, oblique lines. 

 The aperture is fusiform, w^ith an acute posterior angle and a strongly 

 excavated inner margin ; the outer lip is thin, somewhat angulated 

 at the shoulder, with a broad, shallow sinus just above it. The canal 

 is a little elongated, tapered, slightly constricted at its base by the 

 slight incurvature of the outer lip. The columella is nearly straight, 

 with a strongly sinuated inner margin. The surface is lustrous and 

 the texture somewhat vitreous, with a bluish white tint. There is no 

 operculum. 



Length, S'"'" ; breadth, 5"""; length of aperture, 5'""> ; its breadth, 

 2'"'". A somewhat more slender specimen measures in length, 9"'°^ ; 

 in breadth, 4-6™'" ; length of body-whorl, 7'"°' ; length of aperture, 

 5-5™'"; breadth, 2-3"^'". 



Station 2,212, in 428 fathoms, one living specimen (No. 44,654) ; 

 station 2,213, in 384 fathoms, two living specimens (No. 40,472). 



This delicate species has a general resemblance to several others of 

 this genus, such as P. handella Dall., P. Sandersoni V,, and the 

 young of P. Agassizii, but it differs fi'om all these in its more delicate 

 texture, greater transparency, and small, very acute nucleus, as well as 

 in the details of its sculpture. Its subsutural band is unusually 

 broad, and the whorls are decidedly angulated in the middle, 



Pleurotomella Lottae Verriii, sp. nov. 



Platk XLIV, figure 1. 



Shell small, short, ovate-fusiform, moderately stout, with slightly 

 shouldered, convex whorls, and a regularly tapered, acute spire. 

 Suture shallow, but well-marked. Whorls about four and one-half, 

 besides the large imcleus, which consists of about three and one-half 

 gradually increasing whorls. The whorls of the spire are obscurely 

 shouldered at about the middle, above which the broad, sloping sub- 

 sutural band is slightly concave. 



The sculpture on the penultimate whorl consists of about six ele- 

 vated, rounded, revolving cinguli, with some much finer intermediate 

 Trans. Coxn. x\cad., Vol. VI. 52 Apkil, 1885. 



