70 NON-MARINE FOSSIL MOLLUSCA. 



Tabular view of the non-marine fossil mollusca of North America — Continued. 





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Tertiary. 



Post- 

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GASTEROPODA— Continued. 



Neritid^e — Continued. 













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cerithud^c. 



Cei itbidea ncbrascensis Meek & Hayden. 

 MELANIIDiE. 























































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M. ? taylori Gabb 



































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CERIPHASIID^. 

























































, 

































G. (Lioplax ?) endlichi "W 

























































































G. omitta M. & H 



























































































































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RISSOID.E. 

























































































H. recta W 













































