PLEISTOCENE FOSSILS. 265 



The valve is evidently that of an Estheria, much truncated an- 

 teriorly, and with the lines of growth much thicker, higher and closer 

 together than in any North American species known to us, and may 

 prove, when better specimens are found, to be allied to the tertiary 

 Siberian E. middendorfi. 



Insecta. 

 Fornax ledensis. Scudder. 



This is an elytron of a beetle in a nodule from Green's Creek, along 

 with a skeleton of Mallotus Villosus. Scudder, who has kindly exam- 

 ined it, regards it as representing a new species allied to F. calceatus of 

 North America. It has been described by Dr. S. in his volume on 

 Tertiary insects. 



Scudder in his work on Fossil Insects and previously in Reports to the 

 U. S. Geological Survey, notices the insects collected by Hinde in the 

 interglacial beds at Scarborough, on Lake Ontario. He regards these 

 insects as extinct species, but nearly related to modern temperate forms, 

 and in no respect an Arctic assemblage. This agrees with the evidence 

 of the fossil plants. 



PROVINCE VERTEBRATA. 



The vertebrate animals of the Pleistocene are few ; and 

 we can scarcely include in this formation the Mastodon 

 or Mammoth, and their contemporaries, as their remains, 

 so far as known in Canada, are rather Post-glacial or 

 Modern. The fishes are mostly from nodules in the Leda 

 clay, found at and near Green's Creek on the Ottawa 

 Ptiver, and are ordinary northern species. 



Class Pisces. 

 Mallotus mllosus. Cuvier. 



The common capelin is found in nodules at Green's Creek on the 

 Ottawa. (Plate VII.) 



Osmerus mordax. Gill. 



An imperfect skeleton, apparently referable to the smelt, Green's 

 Creek, Ottawa. 



Coitus ( Centrodermichthys} uncinatus. Reinhardt. 



Fossil Nodules from Green's Creek; collection of Mr. J. Stewart, 

 Ottawa, and of J.W. D. 



