PLEISTOCENE FOSSILS. 269 



whales are not infrequent on the lower marine terraces, and are re- 

 ported as occurring also on the higher terraces, but this I have not 

 verified by personal observation. They probably belong either to the 

 " Humpback " or to the " Finner " whale, both of which are occasion- 

 ally present in the Lower St. Lawrence, and are said in former times 

 to have been more numerous. I secured last summer (1891) a large 

 jaw-bone found in digging a cellar in the shelly gravel of the lower 

 terrace at Metis. It is now in the Peter Redpath Museum. 



THE ARCTIC BASIN. 



It may be of interest to add here a list of the species 

 recognized by Jeffreys in the collections of Capt. Fielden 

 in the Pleistocene of Grinnell Land and North Greenland 

 (Ann. and Mag. Nat. Hist., 1877 p. 230 ; Zoologist, 1877, 

 pp. 485-440). It would appear that these shells are found 

 at various elevations, from near the sea level to about 



1,200 feet, 



ConcMfera. 



Pecten Grcenlandicus. Sowerby. 



Pecten Islandicus. L. 



Leda pernula. Muller. 



Leda arctica. Gray. 



Ledafrigida (Torrell) = Toldia Nana (Sars.) 



Axinus flexuosus. Montague. Var. Gouldii. 



Area glacialis. Gray. 



Cardium Islandicum. Chemnitz. 



Chemnitz, Conch. Cab., Vol. VI., p. 200, tab. 19, figs. 195, 196. Cir- 

 cumpolar ; frequent in Post-tertiary deposits throughout the north of 

 Europe and America. 



Astarte borealis. Chemnitz. 

 Astarte fcibula. Reeve. 



This species is probably the Nicania Banksii of Leach, MS., which 

 was figured by the late Mr. G. B. Sowerby in his Supplement to Gray's 

 " Mollusca of Beechey's Voyage " (1839), pi. XLIV., fig. 10, as "Astarte 

 Banksii? (Gray) in Brit. Mus." Moller included it in his list of 



