250 THK ICK AGE IN CANADA. 



li, Vdh/ii of Beck. According to Dr. Carpenter tlie species is 

 an uncertain one, having apparently varieties connecting it with 

 li. hfirpulfiria, Ji. hic(ir'iii<il<i, and li, nohived. 



Beta turricula. Montagu. 



Fossil— Montreal ; Rivicre-du-Loup; Labrador; also Red Crag and 

 Uddevalla (.leffrcys). 



Recent — Little Metis; (iulf of St. Lawrence and coast of Nova 

 Scotia and New Knghind. 



I include under tiiis name B. nohiHn of Mdller ; B. Americana, 

 Packard ; B. f<r(i/(tri.-<, Mdller ; Ji. / xarnia, AFuller, Morch ; and 

 B. (iiKjuhdd, Reeve. The var. tiohilh is found at Montreal and f Jaspc ; 

 also young shells not distinguishable from (xnrdta. Var. scdftiris, 

 occurs at Riviore-du-Loup and Labrivdor. This shell is a widely- 

 diffused and somewhat variable northern species. Mr. Whiteaves, 

 however, regards Ji. iiohi/is, Ji, exarntti, and Ji. sciihtriH as distinct. 



Jiela Trere//i(iiia. Turton. 



Fossil — Rivi6re-du-Loup ; Labrador ; also Clyde beds and Norway 

 (Jeffreys). 



Recent — Little Metis; Riviere-du-Loup; Murray Bay; Arctic seas, 

 and (Jreenland to Massachusetts. It is probably B. decw^aafa of 

 Couthuoy. Ji. cxcurratd (Carpenter), from Puget Sound, may prove 

 another variety. British Columbia, according to Whiteaves.* 



Behi riolacen. Mighels and Adams, 



Fossil— Montreal. 



Recent — Little Metis ; Rivicre-du-Loup ; British Columbia ; 

 Murray Bay; Labrador (Packard); (iasp^ (Whit-'aves) ; Fishing 

 banks Nova Scotia (Willis) ; Massachusetts ^Stimpson). Possibly 

 Ji. bicariiiata of Couthuoy. 



Bela canctUata. Mighels and Adams. 



Fossil — Little Metis ; Murray Bay ; Labrador (Packard) ; Casco 

 Bay (Gould). This shell may be B. inipressa, Beck. In any case the 

 fossils are identical with the modern Murray Bay specimens. It also 

 occurs living in Caspe Bay (Whiteaves). 



* Whiteaves doubts whether the true Be/a turricula or the 

 B. Trevelyana have been found in the St. Lawrence. 



