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DEPARTMENT OF MARINE BIOLOGY ^h ^" 



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OF Sp 



THE CARNEGIE INSTITUTION OF WASHINGTON 

 ALFRED G. MAYER, Director 



PAPERS 

 FROM THE DEPARTMENT OF MARINE BIOLOGY 



OF THE 

 CARNEGIE INSTITUTION OF WASHINGTON 



VOLUME XI 



WASHINGTON, D. C. 

 » • » 



Published by the Carnegie Institution of Washington 



1917 



