BUCCINUM. 185 



Packard, two imperfect specimens, probably of this species, from 

 the pleistocene beds of Portland, Me. The shell is broader and 

 thicker, with fewer (thirteen) longitudinal folds, none of which 

 are interrupted, the primary ridges are more convex, and are 

 alternately wider and narrower. The secondary grooves are 

 rather less numerous. These differences may proove to be spe- 

 cific, when perfect specimens of both forms can be obtained in 

 sufficient numbers. If so, I would suggest the name B. Packardi 

 for the Portland form. It is easily distinguished from B. undu- 

 latum (= undatum) by the flattening and finer striation of the 

 primary ridges, which are also much broader than the correspond- 

 ing grooves. I have also a fragment of the form Packardi from 

 the pleistocene of New Brunswick. 



The above is copied and condensed from Stimpson's descrip- 

 tion. I am unacquainted with the species. Dr. Gwyn Jeffreys 

 considers it a variety of B. Totteni, Stimpson. 



B. STRIATUM, Sowb. PL 76, figs. 328, 329. 



Shell of moderate size, thick, rather elongated and appressed ; 

 whorls seven, riot convex, not angulated, longitudinal ribs eleven 

 in number, not at all oblique, rather distant and prominent, espe- 

 cially at the suture ; spiral ridges flat ; aperture narrow, a little 

 less than half the length of the shell, columella projecting beyond 

 the extremity of the outer lip. Length, 2 inches. 



Sea of Ochotsk. 



Occurs as a pleistocene fossil in Scotland, whence it was first 

 described. Dr. Stimpson unites with this B. Ochotense. Midden- 

 dorff (fig. 329), and Dr. Jeffreys makes it a synonym of B. tenue, 

 Gray. 



B. GLACIALE, Linn. PI. 76, fig. 345 ; PI. 78, figs. 367-373. 



Whorls flattened, spire conic-elevated ; ribs few, obliquely 

 curved, prominent ; body- whorl with one, two or three prominent 

 revolving keels, one of which is sometimes visible on the spire ; 

 revolving ridges coarse, well marked. Length, 2-3 inches. 



Behring's Straits ; Sea of Ochotsk; Spitzbergen ; Greenland. 



The typical form, according to Stimpson, has not as yet been 



found fossil, but the var. (B. Gfrcenlandicum, Hancock =polare, 



Gray) is quite abundant in the pleistocene beds of Montreal. 



The living shell reaches a notably larger size in the North Pacific 



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