218 BELA. 



and perhaps with B. pyramidalis, but readily distinguished by 

 its high spire, want of shoulder, and its nodulous surface. 



B. CANCELLATA, Mighels. PL 29, figs. 67, 53 ; PI. 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. 

 Gouldii. 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. SARSII, Yerrill. 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 scarcely shouldered, with numerous narrow ribs, and 

 many spiral striae ; aperture broadly truncate below. 

 Length, 22 mill. 



Greenland, Iceland, Spitzbergen. 

 Barely distinguishable from the last species. 



B. DECLIVIS, Lov^n. PL 28, fig. 38. 



Shell longer in the spire and narrower, proportionally, than 

 B. cinerea, with slightly stronger shoulder, fewer ribs and 





