PLELSTOCENK FOSSILS 245 



Cylkhna occultd. Mighels and Adams. 



Fossil -Montreal ; Murray Bay ; Maine. 

 Recent— (irconland to New England. 



Cyliclum s/ritifa. ]}rown. 



Fossil -liivitTe-du-Louj) and Clyde beds. 



Recent— Arctic seas. JetJreys thinks this the same with the pre- 

 ceding species. 



Ilnmhua so/ifaria. Say. 



Fossil -Montreal ; rather coininon. 



Recent— New England and northward. 



If this species is rightly determined, it furnishes a curious instance 

 of a somewhat southern species occurring in the drift of J>Iontreal. 

 The mtmiimi^, however, can scarcely be identified l)y weathered or 

 fossil specimens, so that this may possibly be a northern form distinct 

 from aolitufid. 



Diajihana dtbUis. Gould. 



Fossil —Mon treal . 



Recent— Gulf St. Lawrence (Whiteaves) ; Greenland to New 

 England. 



Jeffreys considers it the same with B. hyallna, Turton. If so, it 

 is a shell of the Clyde beds and of the Arctic seas generally. 



Utriciilus pertenuis. Mighels. 



Fossil— Montreal. 



Recent-Labrador (Whiteaves) ; Gulf St. Lawrence, and south to 

 Cape Cod. According to Jeffreys it is U. tun-l(H.-<, Mr.ller, Greenland. 



Patula Mriatella. Anthony. 



Fossil— Pakenham, Saxicava sand. 



Lymnea umhrom. Say. 

 Fossil— Montreal. 



Lymnea caperafa. Say. 

 Fossil — Montreal. 



Limna'a pahiHtru. Muller. ( = L. elodes, H&y.) 

 Fossil— Pakenham Mills, Saxicava sand. 



