364 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 658 | 
ing grooves, which are interrupted on the cost, but distinct in the in- 
tervals; on the upper whorls there are about five; and on the lower 
half of the last whorl usually five or six distinct and continuous ones, 
Aperture broad oval, anteriorly rounded and slightly effuse; outer lip 
thin, sharp; columella nearly straight at base within, slightly revolute 
outwardly, regularly curved anteriorly where it joins the outer lip, and 
not forming an angle with it. The epidermis is thin, light yellow, 
sometimes with a darker, yellowish, revolving band on the middle of the 
last whorls, and also with the revolving striz darker. 
Vineyard Sound,6 to10 fathoms; Long Island Sound, near New Haven; 
5 fathoms. 
TURBONILLA AREOLATA Verrill, sp. nov. 
Shell small, slender, with eight or more whorls, slightly obelisk- 
shaped, owing to the more rapid narrowing of the upper whorls; apical 
or nuclear whorl very small, reversed; the other whorls are moderately 
convex, somewhat flattened in the middle, and crossed by numerous 
rather crowded, narrow, transverse costie, of which there are twenty- 
five or more on the lower whorls; interstices interrupted by numerous 
rather conspicuous, revolving, impressed lines, of which there are about 
six on the upper whorls; these divide the interstices into series of 
pretty regular, small, squarish pits, but do not cross the costie; the body- 
whorl is subangulated below the middle, where the cost disappear, 
below which the base is marked only by fine revolving lines; suture 
impressed. Aperture oval, acute posteriorly, rounded and slightly 
spreading anteriorly ; outer lip sharp, thin, slightly angulated below 
the middle, rounded and slightly effuse anteriorly; colemella smooth, 
somewhat curved, scarcely forming an angle at its junction with the 
outer lip. Length, 4™™; breadth, 1.5™™. 
Long Island Sound, near New Haven. 
The crowded cost and numerous spiral lines produce a closely can- 
cellated appearance, which is sufficient to distinguish this from the two 
preceding species. From the following it differs much in sculpture, 
form, Shape of aperture, and columella, and especially in the minute 
size of the apical whori. , 
TURBONILLA COSTULATA Verrill, sp. nov. 
Shell small, long conical, translucent, glossy white, banded faintly 
with pale brown, subacute, with a relatively large, smooth, reversed 
apical whorl; the other whorls are six or more, flattened, and but 
slightly convex, enlarging regularly, crossed by numerous straight, 
smooth, rounded, transverse cost, of which there are upward of twenty 
on the lower whorls ; interstices rather narrower than the cost, deep, 
and interrupted by numerous very minute revolving lines, which are 
scarcely visible under an ordinary pocket-lens, and do not cross the 
cost ; suture impressed. The body-whorl is subangulated below the 
