216 BELA. 



lowing as additional synonyms : B. semiplicata, Sars (PI. 28, fig. 

 47), a varietal name, B. discors, Brown, Fusus rufus, Gould, not 

 Montagu (PI. 34, fig. 81), B. Vahli, Moller (PL 27, fig. 30), and 

 B. Jenisseensis (PL 33, fig. 72) and Isevior, Let-he, described as 

 varieties. 



B. ALASKENSIS, Dall. PL 34, fig. 5. 



Whorls well rounded, slightly shouldered, obliquely ribbed, 

 the ribs waved near the suture, and obsolete on the lower half of 

 the body-whorl, with very minute, close revolving striae ; reddish 

 or purplish brown, under a thin olivaceous epidermis ; aperture 

 brown, polished, smooth. Length, -8 inch. 



Alaska. 



Described as a Mangilia, with a doubt as to whether it may 

 not be a Bela. Through Mr. Dall's kindness I have examined the 

 type, and think it better placed in Bela. 



B. ALEUTICA, Dall. PL 34, fig. 4. 



Shell pure white, narrow, of seven shouldered whorls, bearing 

 13 or 14 longitudinal ribs, terminating in a carina at the 

 shoulder, with very faint close spiral grooves passing over the 

 ribs. Length, '68 inch. 



Alaska. 



Figured from one of the type specimens. Described as a 

 Mangilia. 



B. EXPANSA, Sars. PL 29, fig. 52. 



Whorls five, finely decussated ; spire short ; whitish. 

 Length, 9 mill. 



Norway. 

 Its peculiar form will immediately distinguish it. 



B. EXIGUA, Jeffreys. PL 33, fig. 73. 



Shell rather solid, but translucent, somewhat glossy, milk- 

 white ; delicately decussated by close, fine striae ; suture deep ; 

 last whorl obtusely shouldered near the mouth. Length, 5 mill. 



Faroe Channel. 



Said to differ from B. tenuicostata, Sars (= the next species), 

 by its narrower form, straight longitudinal lines or striae, and 

 very blunt spire ; the fissural groove also, is much shallower. 



