472 A. E. Verrill— Catalogue of Marine Mollusca. 
the subsutural band, nearly as strongly as in front of the shoulder, 
but in crossing it they are strongly excurved, with concave inter- 
spaces, circumscribed externally by the carination at the shoulder, 
The ribs extend nearly to the base of the canal. Numerous strong, 
close, well-defined, raised spiral cinguli, separated by grooves some- 
times nearly or equally as broad, but usually narrower, crossing the 
ribs and their interspaces, cover the whole surface of the whorls, 
including the subsutural band, on which there are six or seven very 
distinct cinguh, somewhat finer than those below the shoulder; ante- 
riorly, toward the base of the canal, the grooves are wider and the 
cinguli are usually coarser. The apex of the spire is acute, with a 
small, prominent nucleus; the nuclear whorls, except at the very first, 
have two strong, spiral carmee, and then three, while on the next 
whorl riblets appear, and the whorl becomes carinate-shouldered. 
Aperture rather large, oblong, or oblong-elliptical, angulated at the 
shoulder. Outer lip with a broad and very shallow sinus, broadly 
rounded below the shoulder, and distinctly incurved at the base of 
the canal. The canal is narrow and somewhat elongated, and a 
little exeurved. Columella sigmoid, considerably curved. 
Color of shell white, pale greenish white, or yellowish white. 
A medium-sized specimen, with seven whorls, is 18°™ long; breadth, 
se": length of body-whorl, in front, 13°"; its breadth, 75™™"; length 
of aperture and canal, 9°5™" = its breadth: 3°5™") A specimen, ascer- 
tained to be a male, by dissection, measures, in length, 20"; breadth, 
9°5™", length of aperture 11™™. Another male is 18°5"™ long, Sun 
broad ; length of body-whorl, 12°5"™"; its breadth, 7: 5mm length of 
aperture, 10™™ ; its breadth, 3-5". The largest specimen, from 
Eastport, Me., with the canal broken, must have been over 25™™ 
long ; eeu 11"; length of spire, from posterior end of aperture, 
14" this had over 8 whorls. 
This is our largest species of Bela. Its range is from off Cape Cod 
to Labrador, Greenland and northern Europe. It is probably cireum- 
polar. It is not uncommon at Eastport, Me., and in the Bay of Fundy, 
where I dredged it in 1864, 1865, 1868, 1870, 1872, at various locali- 
ties, in 10 to 90 fathoms. By the U. S. Fish Com. parties it was 
dredged in Broad Sound, Casco Bay, and off Half-way Rock, in 14 
to 29 fathoms, 1873; Gulf of Maine, 60 fathoms, near the Isles of 
Shoals, 25 fathoms, at Jeffrey’s Ledge, 51 fathoms, 1873 and 1874; 
Massachusetts Bay, 29 to 40 fathoms, 1877, 1878, 1879; off Cape Cod, 
at nine stations, 15 to 32 fathoms, 1879; Halifax harbor, 25 fathoms, 
and off Halifax, 59 to 190 fathoms, 1877. Labrador specimens were 
