138 GASTEROPODA. PURPURAD. 
Habitat in Cornubie mari profundo. Mus. nost. in Mus. Brit. 
Alt. + unc. 
Shell blackish, moderately turrited, with six transversely 
ribbed whorls; the ribs and the interstices sculptured with 
irregularly impressed lines. Height half an inch. 
Inhabits the deep sea off the Falmouth Harbour and in Scot- 
land. 
This species was discovered by my worthy friend Mr. J. 
Cranch. 
4, BELA MINIMA. 
B. testa brunnedé-nigrescente, glabra, moderatim turrita ; anfrac- 
tibus novem transversim costatis; costis latis, interstitiis li- 
neis impressis sculptis. 
Habitat in mari Danmoniensi rarissimé. Mus. nost. in Mus. 
Brit. 
Shell brown, inclining to pale black, smooth, moderately 
turrited, with nine transversely ribbed whorls; the whorls 
broad, the interstices sculptured with impressed lines. Height 
two-eighths of an inch. 
Inhabits the British sea at Salcombe and Torcross, Devon. 
This new and elegant species was also discovered by the zeal- 
ous and active collector Mr. J. Cranch; it is extremely rare. 
5. BELA SEPTANGULARIS. 
B. testa septangulari, fuscescente, subnitida, alté turrité; anfrac- 
tibus octo; costis latis, distantibus, obliqué descendentibus, 
sutura tenuissima divisis, spiraliter tenuissimé striolatis. 
Murex septangularis, Mont. Test. Brit. 268. t.ix.f.5; Donov. 
Brit. Shells, t. clxxix. f.4; M.&§ R. Trans. Linn. Soe. viii. 
144; Flem. Edinb. Encyel. vii. 72; Dill. Desc. Cat. 745; 
Turt. Conch. Dict. 92. 
Habitat in Angliz et Hiberniz sinubus arenosis profundis. 
Mus. Montagu in Mus. Brit. Alt. $ une. 
Shell septangular, pale fuscous-brown, somewhat shining, 
highly turrited, with eight whorls ; with broad ribs apart from 
each other, descending obliquely, (divided by a very narrow 
