A. E. Verrill—Mollusca of the New England Coast. 427 
Station 2265, off Chesapeake Bay, in 70 fathoms, several living 
specimens. 
This species resembles in form Zectura galeola Jettreys, but differs 
in its sculpture. 
Turbonilla perlepida Verrill, sp. nov. 
Shell long, slender, very glossy, translucent, and snow-white in 
color. Whorls twelve, moderately convex, with the suture well- 
impressed, narrow, deep, rather oblique. The upper end of the 
spire is very slender, regularly coiled, with the apical whorl rather 
large, prominent, reversed, and strongly incurved. The sculpture 
consists of about twenty transvere ribs on the lower whorls, which 
are rounded, not very prominent, and extend across the whorls; on 
the upper whorls these ribs become less numerous and less distinct, 
but are more or less evident on all the whorls below the nucleus, 
which is smooth. The aperture is short and broad-ovate, with the 
outer lip well-rounded laterally and in front; inner edge somewhat 
angulated at the base of the columella, which is a little excurved. 
On the body-whorl the transverse ribs do not extend below the per- 
iphery, so that the base is smooth. Umbilicus absent or represented 
by a minute depression. 
Length, 7™™;- diameter, 1°5""; length of aperture, 1-1™™. 
Station 2265, off Chesapeake Bay, in 70 fathoms, one living spec- 
imen (No. 44,790). 
This elegant species is more slender and delicate, and also more 
lustrous, than any of the allied forms. 
Turbonilla grandis Verrill, sp. nov. 
Shell very large for the genus, with a long, gradually tapering 
Spire composed of many whorls. Suture a little impressed, shallow, 
narrow, not very oblique. The whorls are comparatively short, 
rather flattened, and crossed by slightly raised, rather indefinite, and 
somewhat irregular ribs, which generally extend entirely across the 
upper whorls, but fade out above the middle of the body-whorl. 
The ribs are more regular and more elevated on the upper half of 
the spire than on the lower half. The surface between the ribs is 
destitute of spiral sculpture, but is marked by fine and nearly regu- 
lar lines of growth. The base is smooth and there is no umbilicus. 
The aperture is short and broad, with an acute angle posteriorly and 
a decided angle at the base of the columella, which is nearly straight 
