Craniella (?) grandegrevensis nov. 



Page 2i2 



1 6 Exterior of upper valve 



Grande Greve limestone. Grande Greve 



Orbiculoidea bella (Billings) 



Pai^e ii6 



17,18 The originals of Crania bella Billings 

 Cape Bon Ami beds. Cape Bon Ami 



Orbiculoidea sp ? 



P;i«c 213 



19, 20 An unidentified species 



Grande Greve limestone. Shiphead 



Orbiculoidea mentis nov. 



Page 213 



21, 22 A large upper valve 



23 Compressed and broken specimen of a very large shell 



24 A pedicle valve 



Grande Greve limestone. 21, 22, 24 Grande Greve; 23 Perce Rock 



347 



