CHECKLIST OF THE 



Recent Bivalve Mollusks 



(Pelecypoda) 



OF THE NORTHWEST COAST OF AMERICA FROM THE 

 POLAR SEA TO SAN DIEGO, CALIFORNIA 



BY 



WILLIAM HEALEY DALL, Sc. D., L. L. D. 



1916 



Published by 



SOUTHWEST MUSEUM 



Los Angeles, California 



