No. 4.] DAWSON — POST-PLIOCENE. 391 



Bela elegans, Mollcr. 

 Fossil — 3Iontreal. 

 Recent — Greenland and Norway ; closely allied to next species. 



Bela pyramidalis, Strom. 



Fossil — Montreal ; also Crag, Clyde beds and Uddevalla. 



Recent — Labrador (Packard) ; Gulf St. Lawrence (White- 

 aves) ; Murray Bay, and south to Cape Cod ; Arctic seas gene- 

 rally. It is the B. pleurotomaria of Couthouy. and B. Vahlii of 

 Beck. 



Bela fui'ricula, Montagu. 



Fossil — Montreal; Riviere- du-Loup; Labrador; also Red Crag 

 and Uddevalla (Jeffreys). 



Recent — Gulf of St. Lawrence and coast of Nova Scotia and 

 New Eni>;land. 



I include under this name ^.?io6?7is of Moller ; B. Americana, 

 Packard; B. scalaris, Moller; B. exarata, Muller, Morch ; and 

 B. angulata, Reeve. The var. noh'dis is found at Montreal and 

 Gasp^ ; also young shells not distinguishable from exarata. Var. 

 scalaris, occurs at Riviere-du-Loup and Labrador. This shell is 

 a widely diffused and somewhat variable northern species. Mr, 

 Whiteaves, hewever, regards B. nohilis, B. exarata, and B. sca- 

 lar is as distinct. 



Bela TreveUiana, Turton. 



Fossil- — Riviere-du-Loup; Labrador; also Clyde beds and 

 Norway (Jeffreys). 



Recent — Murray Bay ; Arctic seas, and Greenland to Massa- 

 chusetts. It is probably B. decussata of Couthuoy. B. excurvata 

 from Puget Sound, may prove another variety. 



Bela ciolacea, Mi<ihels and iVdams. 



Fossil — Montreal. 



Recent — Murray Bay ; Labrador (Packard); fJaspe (White- 

 aves ; Fishing banks Nova Scotia (Willis) ; , Massachusetts 

 (Stimpson). 



Bela cancellata, Miu'hels and Adams. 



Fossil — Murray Bay ; Labrador (]*ackard) ; Casco Bay 

 (Gould). This shell may be B. impressa, Beck. In any case 

 the fossils arc identical with the modern Murray Bay specimens. 

 It also occurs living in Gaspe Bay (Whiteaves). 



