PLATE 23 



Modiella modiola nor. 



Page 232 



1-5 Left and right valves 



Gaspe sandstone. Gaspe Basin 



Modiella pygmaea (Conrad) 



Page 231 



6 A right valve showing the ornamentation, x 3 



7 Internal cast of this valve, x 3 

 Gaspe sandstone. Gaspe Basin 



Conocardium cuneus (Conrad) 



Page 162 



8 An incomplete specimen 



Grande Greve limestone. Grande Greve 



Conocardium cf. inceptum Hall 



9 An enlargement of the surface ornament, x 3 



Chapman sandstone. Edmunds- Hill, Chapman Plantation. Aroostook 

 county, Maine 



(Erroneously inserted here ; see part 2) 



Schizodus ventricosus (Billings) ? 



Page 162 



10 A left valve 



Grande Greve limestone. Grande Greve 



Schizodus appressus (Conrad) 



Page 2,2 



1 1 Sculpture cast of a right valve 

 Gaspd sandstone. Gaspe Basin 



Lunulicardium ? convexum nov 



Page 234 



12 A right valve, x 5 



Gaspe sandstone. Gaspe Basin 



298 



