A, E) Verrill—Mollusca of the New England Coast. 189 
in some cases, a distinct, subsutural raised line. The fine spiral 
lines between the carine are rather more regular and distinct than 
in the typical form. The nuclear whorl is alittle prominent and 
turned up, rounded, smooth, glossy, and rather larger than in the 
latter. 
Length, 5"; breadth, 4°"; length of aperture, 2°3"™; its breadth, 
ay 
Station 2038, in 2033 fathoms, with S. formosa, three living 
examples (No. 38,078). 
Seguenzia eritima Verrill, sp. nov. 
PLATE XXXI, FIGURE 15. 
Shell thin, delicate, stout-conical, with a rather high, regularly 
tapered, acute spire, a narrow, deep umbilical pore, and a somewhat 
produced base, which is sculptured by numerous (15 to 20) small, 
spiral cingull. 
Whorls seven, rapidly increasing, strongly angulated and eari- 
nated in the middle. Suture distinct, very slightly impressed, 
bordered below by a small, slightly raised, spiral ridge; from this 
the wide subsutural band rises, at an abrupt angle, to the carina of 
the shoulder, forming a flat or somewhat concave upper slope on the 
whorls. On the spire the shoulder is situated at about the middle 
of the whorls, and the periphery, below the carina, is flattened and 
descends nearly perpendicularly to the suture. On the last whorl a 
second sharp carina surrounds the periphery, the space between the 
two being a little greater than that above the first carina, the per- 
ipheral band being here somewhat concave. Below the peripheral 
carina the base is covered by fifteen to twenty smaller and distinctly 
raised, thin cinguli, of which the two or three outermost are but 
little smaller than the carinz, and separated by spaces two or three 
times their own breadth; near the umbilicus the spirals again 
become a little stronger and wider apart, while over the greater part 
of the base they are slender and very close set, the grooves between 
being scarcely as wide as the lines; midway between the center and 
circumference there is a low, ill-defined spiral ridge, corresponding 
to the anterior sinus of the lip; the innermost spiral line forms a 
thickened border for the umbilicus. The spaces between the carinz 
~ are crossed by numerous, very delicate, flexuous, raised riblets, 
which are close and very regularly spaced, and rather more promi- 
nent on the last whorl than on the spire; those on the subsutural 
