PLATE 13 

 Aviculopecten flammiger Clarke 



Page 71 



I, 3 Two left valves showing some difference in the expression of the 

 sculpture, figure i indicating a longer retention of the primitive 

 characters 

 Localities. Figure i, Askwith siding; figure 3, Misery stream 



2 Enlargement of sculpture from figure 3. x 5 



4 A larger valve referred to this species 



Locality. Telos lake 



Aviculopecten alcis Clarke 



Page 70 



5 A left valve, somewhat incomplete, showing the character of the surface 

 Locality. Seven miles north of Kineo, Moosehead lake 



Pterinea moneris Clarke 



Page 73 



6 Part of internal cast of right valve showing the hinge teeth 

 Locality. Matagamon lake 



7 Sculpture cast of the left valve 



8, 9 A similar specimen showing the cast of the hinge with enlargement 

 Locality. Webster lake 



Pterinea radialis Clarke 



(See plate 14) 

 Page 72 



10 A small left valve 



1 1 Internal cast of a left valve 

 14 A large left valve 



Localities. Matagamon lake and Cunningham's camp 



Pterinea sp. ? 



12 Sculpture cast of a left valve showing teeth and ligament area 

 Locality. Matagamon lake 



13 A left valve 



Locality. Stony brook, Moose river 



These two specimens are allied in some particulars both to each other 



and to P. radialis 



192 



