4tjs A. K Verrill — Catalogue of Marine Molluxca. 
usually rather coarser and more distant at the base ot' the canal, after 
the ribs disappear; between the carina and the base of the canal 
there are about 9 or lo cinguli; the first is a little more distant from 
the carina; on the penultimate whorl there are usually but, two, or 
rarely three, cinguli visible, and often but one; several fine cinguli 
cross the subsutural baud. By the ribs and cinguli a deeply cancel- 
lated structure is produced, but the ribs are much stronger than the 
cinguli. The nucleus is very small and the normal sculpture com- 
mences very early. 
The aperture is rather small, but is more than half the length of 
the shell ; outer lip angulated at the shoulder and flattened below it, 
then broadly rounded, incurved at the base of the short canal, which 
is much narrowed, straight, <>r slightly excurved. 
Color, yellowish white. 
Length, 7 - 5 mm ; breadth, 4’“'“ ; length of body-whorl, 5 , 3 mm ; 
breadth, 3’5 mr “ ; length of aperture, 4' nn ' ; its breadth, l # 5 mn ’. 
Seal Cove, Grand Menan, 5 to 8 fathoms (8 specimens). — II. E. 
Webster, 1872. Halifax harbor, stations 72, 73, in 18 fathoms, 1877. 
— l\ S. Fish Com. Massachusetts Bay, 16 fathoms, 1879. Green- 
land. Perhaps, northern Europe. 
Bela concinnula Verrill. sp. now 
Bela exarata ( pars | Verrill. Proc. Nat. Mas., iii. p. 366, 1880. 
Plate XLIir, figure 15. Plate LVII, figure 11. 
Shell rather small and delicate, long-ovate, regularly turreted, 
with about six whorls, which rise almost at right angles from the 
suture, and have an angular, or squarish, nodulous shoulder, usually 
distinctly carinated bv a thin, raised, spiral keel, which forms small, 
but prominent nodules where it crosses the ribs; below the shoulder 
the whorls are abruptly flattened. The subsutural band is usually 
little convex, or nearly fiat. 
The ribs are numerous (often 20 to 25) regular, nearly straight 
below the shoulder, but rounded, separated by concave intervals of 
equal or greater width ; they extend entirely across the upper whorls, 
but fade out below the middle of the body-whorl ; above the shoulder 
they are slightly excurved, and smaller across the subsutural band. 
Whole surface covered with regular and rather strong, rounded, ele- 
vated, revolving cinguli, which cross the ribs and produce on them 
small, rounded nodes, and give a pretty regularly and rather finely 
but strongly cancellated appearance to the whole surface. On the 
penultimate whorl there are four or five cinguli below the angle. The 
