152. A. B&. Verrilil—Mollusea of the New England Coast. 
white and translucent, with the exception of the nucleus. Epidermis 
not apparent. Operculum wanting. 
Length of one of the largest examples, 10"; greatest breadth, 
5™™ 3 length of body-whorl to tip of canal, 7™™; length of aperture, 
5=™™: its breadth, 2:5": 
Stations 2041, 2042, 2043, 2076, 2084, and 2115, in 906 to 1608 
fathoms. Albatross, 1883. The greatest number oF living specimens 
occurred at station 2084, N. latitude 40° 16’ 50”, W. longitude 67° 
05’ 15”, in 1290 fathoms, (No. 38,308). 
This is a small and very elegant species, remarkable for the con- 
vexity of its whorls, and its very broad subsutural band. The canal 
is narrower and more constricted at its base than is usual in this, 
genus. The sculpture is strongly marked, but does not give the 
rough appearance seen in P. Benedicti, which is also a longer and more 
fusiform shell, but has considerable resemblance in its sculpture. P. 
Diomedew is also a more elongated shell, with less convex whorls, 
and its subsutural band is narrower and crossed by conspicuous 
prolongations of the ribs. It bears some resemblance to P. formosa 
(Defrancia formosa Jeff.), but that has less prominent ribs, less con- 
spicuously shouldered whorls, and a differently shaped aperture. 
This species is named in honor of W. E. Safford, Ensign U.S. N., 
who was a member of the Fish Commission party, in 1883. 
Pleurotomella Diomedee Verrill and Smith, sp. nov. 
PLATE XXXI, FIGURES 5, 5a. 
Shell white, delicate, rather small, fusiform, with an acute spire and 
distinctly angulated whorls, crossed by prominent flexuous ribs, which 
extend upward to the suture, and with rather coarse revolving lines, 
usually absent on the wide subsutural band, which is concave at a 
little distance from the suture. The posterior sinus is rather broad 
and deep, a little removed from the suture. Whorls four or five 
below the nuclear whorls, of which there are four. The body-whorl 
is large and moderately convex, strongly angulated at the shoulder, 
which is prominent and bears a series of small rounded nodules at the 
angle of the ribs; above the shoulder the whorls are decidedly con- 
cave in line with the posterior sinus, but have a narrow, convex band 
just below the suture. The subsutural band is crossed by thin but 
strongly raised continuations of the ribs, which recede ina strong 
curvature in crossing the concave portion, but advance abruptly and 
rise into small prominent, narrow or compressed tubercles in crossing 
the convex portion, close to the suture; at the shoulder the ribs be 
