210 



Kansas Academy of Science. 





PLATE IV. 



Fig. 

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Fig. 

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34. 



35. 



36. 



37a. 



376, 



38a. 



38 b. 



38c. 



39. 



40. 



41. 



42n, 



426. 



Yoldia cooperi Gabb ; a broken left valve, showing hinge of right 



Cardium meekianum Gabb ; cast of young specimen. 



Cardium (Cerastoderma) corbis Martyn. 



Tivela crassatelloides Conrad ; times, one-half. 



37c. Hinges of T. crassatelloides? specimens. 



Paphia (Tapes) stalyi Gabb; a cast. 



Hinge of 38o, above. 



Drawing showing outside of 



38«, above. 

 Macoma inquinata Deshayes. 

 Tegalus californicus Conrad ; 

 Mactra californica Conrad ; a 

 Mactra exoleta Gray. 

 Drawing of a broken valve of the same species, showing hinge. 



are immature shells. 

 Mactra hemphilli Dall r an immature shell. 



i-e of another specimen of the same species as 



a much broken specimen, 

 cast ; times, one-half. 



Both specimens 



