160 A, FE. Verrill— Mollusca of the New England Coast. 
bears minute nodules. The rest of the surface is cancellated nearly 
as in the typical form, but the riblets are frequently more conspicuous 
than the cinguli. Forms intermediate between the variety and the 
type are of frequent occurrence. 
This variety occurred, with the typical form, at stations 2043 and 
2084, (No. 37,817 and 37,796). It was also taken at station 2038, in 
2033 fathoms (No. 37,797, one dead); and at station 2096, in 1451 
fathoms (No. 37,793, one living). 
This species may readily be mistaken for Bela hebes, especially 
when somewhat broken and eroded. The nucleus, however, is en- 
tirely different and the aperture is narrower anteriorly and shows a 
more distinct constriction at the base of the siphon, which is narrower 
and less open than in the latter. The sculpture is also more distinctly 
and more regularly cancellated. 
Bela subvitrea Verrill, sp. nov. 
Shell translucent, white, thin but firm, fusiform, moderately stout, 
with a high, regularly tapered, acute spire, consisting of about six 
rounded whorls, which are crossed by rather thin, prominent ribs, 
strongly bent in a sigmoid curve, and having on the lower whorls 
rather faint spiral sculpture. 
Whorls four to five below the nucleus, strongly convex and a little 
swollen at the rounded shoulder, which is rarely somewhat angulated, 
and without a definite subsutural band. Suture strongly impressed, the 
upper part of the whorl rising rather abruptly from it. The nucleus 
consists of about two small, prominent whorls; the first is small, 
rounded, slightly mamilliform, and a little prominent ; the next, con- 
stituting the greater part of the nucleus, increases rapidly and is de- 
cidedly prominent and somewhat obliquely placed, and bears about 
four or five raised, revolving lines, which are sometimes crossed by 
distinct lines of growth. The suture between the last nuclear whorl 
and the next is strongly marked and more oblique than any of the 
others. The remaining whorls are crossed by rather conspicuous, 
sharp, and rather elevated ribs, which are strongly excurved at and 
just above the shoulder, curving forward rapidly to the suture, and 
bending forward more gradually below the shoulder, forming a dis- 
tinct sigmoid curve. ‘The interspaces between the ribs are much 
wider than the ribs themselves, distinctly concave, and crossed by 
rather feeble cinguli, which are usually not apparent on the ribs 
themselves. On the upper whorls the spiral lines are usually more 
conspicuous than on the lower ones, but are often indicated chiefly 
