PLEISTOCENE FOSSILS. 243 



Recent— Little Metis; Murray Bay; Gaspe ; 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 Tellinas, Astartes, 

 Saxicava and Ledas ; though these in turn are always much better 

 preserved than the Mytili and Modiolse. 



Ostrea Virginiana, Lister. 



I have picked up a loose specimen at Saco which has the appearance 

 of being a fossil specimen from the Leda clay, and Mr. Paisley has 

 sent me specimens from the Bay des Chaleurs, which are said to have 

 come from Pleistocene beds 16 feet from the surface.* 



Class III. — Gasteropoda. 



Philine lineolata. Couthuoy. 



Fossil t— Montreal, rare. 



Recent— Gaspe ; Grand Manan (Stimpson) ; Nova Scotia (Willis). 

 It is Philine lima, Brown, according to Jeffreys. 



Cylichna alba. Brown. 



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

 (Plate VL, Fig. 11.) 



Recent — Gaspe ; Labrador (Packard) ; Gulf St. Lawrence, common 

 (Whiteaves) ; Arctic seas generally. Same or similar on West Coast 

 at Sitka (P. P. C.) 



Cylichna oryza. Totten. 



Fossil — Montreal. 



Recent — Coast of New England. Jeffreys regards it as B. utriculus. 

 Povichi. 



Cylichna nucleola. Reeve. 



Fossil — Montreal ; rare, and perhaps doubtful. 

 Recent — Arctic seas. 



* At present, however, its occurrence as a Pleistocene species must 

 be regarded as doubtful, more especially as in modern times it does not 

 occur in the colder parts of the Gulf of St. Lawrence. 



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

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



