SMITHSONIAN MISCHLLANHOUS COLLECTIONS 



VOLUME 92, NUMBER 2 



NEW FRESH-WATER MOLLUSKS FROM 

 NORTHERN ASIA 



(With One Plate) 



BY 

 ALAN MOZLtY 



Walter Ratlilione Baccm Scholar, Smithsonian Institution 





ii 



\tn 





(Publication 3253) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



AUGUST 8, 1934 



