SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 98, NUMBER 10 



MOLLUSKS COLLECTED ON THE 



PRESIDENTIAL CRUISE OF 



1938 



(With Five Plates) 



BY 



PAUL BARTSGH 



Curator, Division of Mollusks, 



U. S. National Museum 



AND 



HARALD ALFRED REHDER 



Assistant Curator, Division of Mollusks, 

 U. S. National Museum 



(Publication 3535) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



JUNE 13, 1939 



