S H^ , DEPARTMENT OF MARINE BIOLOGY 



^^-a^i^ 





CARNEGIE INSTITUTION OF WASHINGTON 



ALFRED G. MAYER, Director 



PAPERS FROM THE TORTUGAS LABORATORY 



OF THE 



CARNEGIE INSTITUTION OF WASHINGTON 



VOLUME IV 



'2- c; o ,5- 



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WASHINGTON, D. C. 

 Published by the Carnegie Institution of Washington 



1910 



