218 BELA. 
and perhaps with B. pyramidalis, but readily distinguished by 
its high spire, want of shoulder, and its nodulous surface. 
B. CANCELLATA, Mighels. PI. 29, figs. 67,53; Pl. 28, fig. 46. 
Whorls nine, somewhat convex, narrowly obtusely shouldered ; 
ribs strong, flexuous, with a sigmoid curve at the shoulder, 
crossed by coarse spiral cinguli; white, stained rosy or light 
chestnut, or yellowish. Length, 15-20 mill. 
Massachusetts ; Greenland; Norway; Nova Zembla. 
Often confounded with allied species, and especially with B. 
Pingelii, above, and with B. pyramidalis, B. harpularia, and B. 
Gouldi. B.pyramidalis has a more slender spire, and the spiral 
sculpture is less developed; B. harpularia is less elongated, with 
straighter ribs and finer revolving lines; B. Gouldii has more 
shouldered whorls, nodulous at the angle, straight ribs, and 
longer canal. It must be confessed that these distinctions are 
rather arbitrary, and that the interests of science would have 
been promoted if many of the so-called species of Bela had not 
been described. B. elegans, Moller (PI. 29, fig. 53), and B. angu- 
losa (Pl. 28, fig. 46) of Sars, may be considered slight variations 
of this species. 
B. Sarsi, Verrill. Pl. 28, fig. 49. 
This name was proposed for the species figured by Sars for 
B. cancellata. The whorls are obtusely shouldered, the ribs 
fewer and stronger, and nearly straight, crossed by rather distant 
revolving grooves, giving it a coarsely cancellated or tesselated 
subnodulous surface. Length, 10 mill. 
Norway ; Labrador ? 
B. CINEREA, Moller. Pl. 28, fig. 48. 
Shell searcely shouldered, with numerous narrow ribs, and 
many spiral strie; aperture broadly truncate below. 
Length, 22 mill. 
Greenland, Iceland, Spitzbergen. 
Barely distinguishable from the last species. 
B. pEctivis, Lovén. PI. 28, fig. 38. 
Shell longer in the spire and narrower, proportionally, than 
B. cinerea, with slightly stronger shoulder, fewer ribs and 
