DEPARTMENT OF MARINE BIOI.OGY 



OF 



THE CARNEGIE INSTITUTION OF WASHINGTON 

 ALFRED G. MAYOR, Dirrctor 



VOLUME XVII 



SHALLOW -WATER FORAMINIFERA 

 OF THE TORTUGAS REGION 



BY 



Joseph Augustine Cushman 



WASHINGTON, D.C. 

 Published by the Carnegie Institution of Washington 



1922 



