BELA. 219 
revolving striz, the sculpture cancellated; aperture broadly 
truncate below. Length, 22 mill. 
Norway, Faroé Islands. 
Var. augustior, Jeffreys, is said to be narrower and smaller. 
B. opiiqua, Sars. PI. 28, fig. 50. 
Shell turriculated, with shouldered whorls, the shoulder acute 
and tuberculated by the terminations of thirteen to sixteen nar- 
row oblique ribs, having much wider interspaces which are 
covered by revolving striz; aperture rather short, broadly 
truncate below. Length, 10 mill. 
Norway. 
B. turRicuLA, Montagu. PI. 30, fig. 93; Pl. 27, fig. 22; Pl. 28,: 
figs. 41, 44, 45; Pl. 29, fig. 57; Pl. 33, fig. 60. 
Shell narrow, turriculated, the shoulder acute, with the ribs 
strongly projecting above it and then running across to the 
sutures; ribs about sixteen, nearly straight, prominent, crossed 
by very close, rather fine revolving strive; aperture rather nar- 
row; canal narrow and produced. Length, 17 mill. 
Europe, Nova Zembla, Greenland. 
B. scalaris, Miller, B. scalaroides, Sars (Pl. 28, fig. 59), B. 
Woodiana, Moller?, B. harpularia, var. rosea, Sars (Pl. 28, fig. 
37), are synonyms of the typical form. 8B. Dowsoni and robusta 
of S. V. Wood are here referred by Dr. Jeffreys; and among the 
older names may be cited B. alba, Pennant, B. angularis, Donov., 
and B. discrepans, Brown. 8B. nobilis, Moller (PI. 28, fig. 41), 
and its synonym B&B. angulata, Morch, designate a variety with 
more strongly marked shoulder on the whorls. B. exarata, 
Moller, and B. harpularia, Sars, not Couth. (Pl. 28, fig. 45), B. 
rugulata, Sars (Pl. 33, fig. 60), B. assimilis, Sars (Pl. 28, fig. 44), 
and perhaps B. mitrula, Lovén (Pl. 29, fig. 57), are synonyms. 
B. HARPULARIA, Couthouy. PI. 29, fig. 51. 
Shell slightly round-shouldered, with 17-20 low oblique ribs 
and fine revolving striz ; pale reddish brown or rosy, when fresh, 
frequently yellowish or white. Length, 13-17 mill. 
Long Island Sound to Nova Scotia. 
This species is often confounded with the preceding one, but 
differs in its obtusely rounded shoulder, lower and more numerous 
