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SMITHSONIAN INSTITUTION 



UNITED STATES NATIQNAL MUSEUM 

 Bulletin 69 



THE T/ENIOID CESTODES OF NORTH 

 AMERICAN BIRDS 



BY 



BRAYTON HOWARD RANSOM 



Assistant Custodian, Helminthological Collections, U. S. National Museum 







WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1909 



