r.l I III M. 

 B. BBUBIEN8, Carp. IM. .",M. fig, Hi. 



Like the preoedhig, of which acoording to rarjH'nter it is possibly 



a degraded variety, hut much -mailer. Lrngl h, li-."i mill. 



/>/. /, .sw// I 'i-dro,' Cat. 



H. ..r M.IMI-II.ATI.M, Carp. IM. '_".), tig. !H. 



Whorls slightly convex, with wrll-irnpivs.-ed suture, n;irn\v, with 

 cloe longitudinal rilis, rrossvd by four rai>c<l spiral thivals, lia.se of 

 body whorl sniootli, li^lit ash color varying to chocolate, interior 

 clu'stnut color. Lcn^tli, * mill. 



S. / W/-0 -- S. I)ir,,n, ( '/. 



\\. &8PERUM, Gabb. PL 30, fig. 7. 



A stouter species than B. (jii<i<lr(fi/<ifuii>, the whorls slopin^ly 

 convex, torinin-- an ohtusc an.irle above the suture, sculpture simi- 

 lar. but stronger. Length, 10 mill. 



Southern Ciiliforin'n. 



Described as a fossil of the pleistocene of the same region, but has 

 since been discovered recent. B. nn/nfiun, Carp., is a synonym. 



]\. \ ITKM A n M, Carp. PL 30, fig. 8. 



With about 10 rather narrow, rounded whorls, with scarcely 

 impressed suture, with longitudinal riblets, distinct only at the top 

 of the whorls, where they are decussated by two spiral lines, tin 

 spiral sculpture also becoming fainter below, base of body whorl 

 prolonged, with about six spiral striae. Length, 10 mill. 



B. PJ:I:I \ IAMJM, d'Orb. PL 30, fig. 21. 



Ventricose, whorls slightly convex, granulated by longitudinal 

 rounded ribs and spiral strire, chestnut color. Length, 7 mill. 



Near An'rn. 1*< ,-n. 



\\. PIGKUM, \Vat~on. PL .'!<). ti->. 4, 2, 3, 11. 



With about 21 flatly rounded longitudinal ribs, and >ulu-i|ual 

 interspaces, with three fine spiral threads, forming rounded tubercle- 

 on the ribs, suture defined above by a raised thread, which termi- 

 nates the sculpture on the body whorl, beinir smoother on the ba-e; 

 dead white. Length, 9'5 mill. 



I think B. IU*CUUR (fig. 2), B. jihi/tnm 1 \ tig. 3), and B. 

 Watson (fig. 11), are merely young shells of the species; they are 

 all from the same locality. 



