380 THE CANADIAN NATURALIST. [Vol. vi. 



in the Crag. It is a northern species meeting on the American 

 coast the closely allied forms A. Undata and A. lens, into which 

 however it does not seem to pass. The two latter species, being 

 more southern forms, are not found in the Post-pliocene. 



A. Omalii of S. Wood from the Crag, is very near to this 

 species, but is at least a distinct variety. 



Astarte Arctica, Moller, (var Lactea.) 



Fossil — Labrador (Packard) ; Portland, Maine ; also Green- 

 land, (Moller). 



Recent — Gaspe; also Arctic seas; Norway (typical). 



This species has not yet been found in the Post-pliocene of 

 Canada, except in Labrador ; and it seems to be a rare shell in 

 the Gulf of St. Lawrence. It is our largest Astarte and I believe 

 it to be identical with A. borealis, Chem., A. lactea, Brod. and 

 Sow., and A /Semisulcata, Gray. Fossil specimens from Port- 

 land, are precisely similar to recent ones from Gaspe dredged by 

 Mr. Whiteaves, and referred by him to A. lactea. Specimens 

 from Norway (A. Arctica) and from Clyde beds (J.. Borealis) 

 are smoother and less ribbed than ours. 



Other species of Astarte. 



At Murray Bay, there occurs very rarely a transversely elon- 

 gated and regularly striated Astarte with delicately wrinkled 

 epidermis, which seems to be identical with J.. Richardsonii from 

 the Arctic seas as described but not as figured by Reeve. It is 

 not improbably a young state of Astarte Arctica. A similar 

 species or variety occurs, but very rarely, fossil at Riviere-du-Loup. 

 A. sulcata (undata), A. lens, A. crehricostata, A. castanea, and 

 A. quadrans have not yet been found fossil, though the three 

 former at least live in the Gulf of St. Lawrence.* 



Cardium phmulatum, Conrad. 



Fossil — Leda clay, Lawlor's Lake, N.B. 



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

 New England. 



* A. undata Gould and A. quadrans, Gould, certainly occur in the 

 Gulf of St. Lawrence N. of the Baj of Chaleurs. A shell dredged in 

 deep water N. of Anticosti may be A. crebricostaia. A. lens, Stimpson, 

 and A. castanea, Say, have not yet occurred to me in dredgings from 

 more than 60 localities N. of New Brunswick. J. F. \V. 



