160 THE ICE AGE IN CANADA. 



Col. Grant has also noted as occurring in the beds the 

 following species, of which there are no specimens in 

 the collection : 



Pecten islandicus. 



Mytilus edulis. 



Natica grcenlandica. 



Balanus hameri. 



In sand and clay filling the interior of a Mya, which 

 seems to have been entombed in situ, are many micros- 

 copic tests of foraminifera and valves of Cythere and 

 Cytheridea. Among the former were the following species: 



Polystomella crispa. 



Nonionina scapha (and var. labradorica). 



PolymorpJiina lactea. 



Truncatulina lobata. 



Lagena sulcata. 



Entosolenia glolosa. 



E. squamosa. 



Grlobigerina bulloides. 



As usual in the Canadian Pleistocene, Polystomella 

 crispa is much more abundant than the other species. 

 Nonionina scapha conies next in this respect, arid all the 

 others are rare. The material also contains numerous 

 spicules of siliceous sponges. 



The above fossils may be regarded as characteristic of 

 the Upper Leda clay and Saxicava sand, both of which 

 members of the Pleistocene formation appear to be repre- 

 sented in Anticosti. 



It would also appear that, as elsewhere in Canada, the 

 Leda clay is overlaid by a second or newer boulder 

 deposit connected with the Saxicava sand. To this it is 

 probable that many of the travelled boulders of Lauren- 



