38G THE CANADIAN NATURALIST. [Vol. vi. 



St. Lawrence vnlley ; but since, according to Packard, it is com- 

 mon in Labrador, there is nothing remarkable in its occurrence 

 in the Post-pliocene of St. John. 



Feet en Islandicus^ Chemnitz. 



Fossil — Riviere du-Loup ; Quebec ; Labrador (Packard) ; St. 

 John, N.B. (Matthew); Portland, Maine; Greenland (Moller) ; 

 also Crag, Clyde beds, and Post-pliocene of Norway. 



Recent — Gulf St. Lawrence, and from Greenland to Connecticut. 



This is a shell which is very durable, and retains even its 

 colour when imbedded in the clays. In this it excels the Tel- 

 linas, Astartes, Saxicava and Ledas ; though these in turn are 

 always much better preserved than the Mytili and Modiolae. 



Class III. — Gasteropoda. 



Phillne luieolata, Couthuoy. 



Fossil* — >lontreal, rare. 



Recent — Gaspe ; Grand Manan (Stimpsou) ; Nova Scotia 

 (Willis). It is Phlline lima, Brown, according to Jeffreys. 



CyUchna alha, Brown. 



Fossil — Montreal ; Riviere-du-Loup ; also in the Clyde beds. 



Recent — Gasp^ ; Labrador (Packard) ; Gulf St. Lawrence, 

 common (Whiteaves) ; Arctic seas generally. Same or similar 

 on West Coast at Sitka (P.P.C.) 



CyUrhna oryza, Totten. 

 Fossil — Montreal. 

 Recent — Coast of New Enoland. 



Cylichna mideola, Reeve. 



Fossil — Montreal; rare, and perhaps doubtful. 

 Recent — Arctic seas. 



Cyliclina occulta, Mighels and Adams. 

 Fossil — Montreal ; Murray Bay ; Maine. 

 Recent — Greenland to New England. 



Cylichna striata, Brown. 



Fossil — Riviere-du-Loup and Clyde beds. 

 Recent — Arctic seas. 



* Except when otherwise stated, all the Gasteropods are found in 

 the Leda clay, or at its junction with the Saxicava sand. 



