1 





DEPARTMENT OF THE INTERIOR-U, S. GEOLOGICAL SURVEY 

 J. W. POWELL DIRECTOR 



A REVIEW 



OF THE 



Xftriskm of MolfagSg 

 gtecHoaal LOxrcsf 



NON-MARINE FOSSIL MOLLUSCA 



NORTH AMERICA 



CHARLES A. WHITE 



Extract from the Annual Report of the Director of the TJ. S. Geological Survei — 1881-82 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1883 



5478 



A 



