A. E. Verrill— Catalogue of Marine Mollusca, 469 
abruptly flattened subsutural band, above the shoulder, is covered 
with numerous much finer and closer revolving lines; on the anterior 
part of the body-whorl the cinguli are rather stronger than on the 
middle, and separated by wider grooves, but they are only slightly 
roughened by the lines of growth; on the canal they become finer 
and closer; between the carina and the base of the canal there are 12 
to 14 cinguli. The nucleus is small and regular; at first smooth, then 
two raised spiral lines begin on the first whorl, and soon become dis- 
tinct carinz, on the second to third whorl, the upper one forming the 
shoulder; slender transverse riblets begin on the second, and become 
very evident on the third whorl. 
Aperture narrow-ovate, angulated posteriorly ; sinus broad and 
shallow; outer lip, in front of the sinus, distinctly flattened, then 
broadly rounded, very slightly incurved at the base of the canal, 
which is narrow, a little produced, and slightly curved; columella 
decidedly sigmoid, its inner edge excurved at the end. 
Color of the shell white, or pale greenish white, covered with a 
thin, pale green epidermis. 
The tentacles are short and obtuse in alcoholic specimens, with 
conspicuous black eyes; penis relatively large, bent back in a sigmoid 
form, flattened, broadest in the middle, tapering. 
Uncini, linear, very acute, relatively large, long, slender, curved, 
with a short ovate basal appendage; length of uncini, °052™™ ; 
breadth, -0032™", 
A rather large male is 11°5"" long; breadth, 5°25"™; length of 
body-whorl, 7™™; its breadth, 5™; length of aperture, 5™™; its 
breadth, 2". An ordinary specimen, measures, in length, 10™" ; 
breadth, 4°5"™"; length of aperture, 5°5™". 
This species is common and widely distributed on this coast. It 
ranges from the region south of Martha’s Vineyard, in deep water, to 
Labrador. By the U. S. Fish Com. it was dredged, off Newport, 
R. [., and Martha’s Vineyard, in 252 to 487 fathoms (stations 880, 
892, 947, 994, 1038), 1880 and 1881; Cape Cod Bay and off Cape 
Cod, 25 to 122 fathoms, 1879; Massachusetts Bay, 20 to 29 fathoms, 
1877; Gulf of Maine, many stations, 25 to 88 fathoms, 1873, 1874, 
1878; 150 fathoms, 1872; Casco Bay, 1873; George’s Bank, 50 to 65 
fathoms, 1872; south of George’s Bank, 430 fathoms, 1872; Halifax 
harbor, 16 to 21 fathoms, and off Halifax, 42 fathoms, 1877. 
The specimens from Labrador were sent as B. exarata, by Dr. A, 
S. Packard, Jr. 
This shell is closely allied to Bela ewarata, and may ultimately 
