182 A, FE. Verrill— Mollusca of the New England Coast. 
entirely destitute of the transverse ribs. The present species also 
resembles C. abyssicola of northern Europe, as figured by G. O. 
Sars, but the latter has a stronger sculpture, with fewer revolving 
lines, and the outer lip has a distinct varix. C. Jeffreysi differs in 
nearly the same manner. 
Cingula leptalea Verrill, sp. nov. 
PLATE XXXII, FIGURE 10. 
Shell of moderate size, thin, slender, composed of four very con- 
vex whorls separated by a deep suture, and with small spiral cinguli 
and microscopic, wavy, revolving lines. The apical whorl is rather 
large, smooth, regularly coiled, forming a small rounded apex. ‘The 
lower whorls are covered with small, rounded cinguli, of which there 
are from eight to ten above the suture, on the penultimate whorl, 
those just below the suture becoming indistinct; on the body-whorl 
there are about twenty; they are separated by concave interspaces 
of somewhat greater width, the spaces becoming greater on the 
upper part of the whorl. Both the interspaces and cinguli are coy- 
ered by very delicate, microscopic, raised lines, which are bent into 
minute, close waves, giving the whole surface a microscopically ver- 
miculated appearance; of these wavy lines there are mostly from 
four to six in the interspaces and four or five on the cinguli. The 
whorls are crossed by raised lines of growth, which in some places 
are pretty regular and nearly as prominent as the cinguli, which they 
cross so as to produce a finely reticulated sculpture; this is seen 
most frequently near the shoulder, but is not constant, often fading 
out both near the suture and anteriorly. There are also more or less 
distinct microscopic lines of growth which cross the minute revoly- 
ing lines, but are less distinct than the latter. The aperture is rather 
large, regularly ovate; the outer lip is a little thickened, but without 
a varix; it is regularly arched exteriorly and a little effuse in front; 
the inner lip is well developed and continuous, though closely 
adherent to the body-whorl. There is no umbilicus, but a small 
chink is formed by the eversion of the columella-lip. Color, in alco- 
hol, pale yellowish white with a tinge of greenish, and translucent ; 
when dry, white and opaque. 
Length, 3"; breadth, 1:8™"; length of aperture, 1™™. 
Station 2072, N. lat. 41° 53’, W. long. 65° 35’, in 858 fathoms (No. 
38,060). One living specimen. 
