/a "nmnir i ^ 



SMITHSONIAN INSTITUTION 



UNITED STATES NATIONAL MUSEUM 



Bulletin 75 



NORTH PACIFIC OPHIURANS IN THE COLLEC- 



%*** 



TION OF THE UNITED STATES 

 NATIONAL MUSEUM 



BY 



HUBERT LYMANjCLARK 



Museum of Comparative Zoology '^Cambridge, Mass, 



^T* **2s^ 



PER\ 





WASHINGTON 

 GOVERNMENT PRINTING OFFICE 



1911 



