SMITHSONIAN MISCELLANEOUS COLLECTIONS 

 VOLUME 128, NUMBER 5 



Cfjarles; M. anb Jllarp "^aux OTalcott 

 i^esiearcf) jFunb 



REVISION OF SOME RECENT 

 FORAMINIFERAL GENERA 



(With Four Plates) 



By 

 ALFRED R. LOEBLICH, JR. 



U. S. National Museum 

 AND 



HELEN TAPPAN 



Research Associate, Smithsonian Institution 



(Publication 4214) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



JULY 21, 1955 



