mm mjmt 



SMITHSONIAN INSTITUTION 

 UNITED STATES NATIONAL MUSEUM 



Bulletin 140 



BIRD PARASITES OF THE NEMATODE 



SUBORDERS STRONGYLATA, 



ASCARIDATA, AND 



SPIRURATA 



BY 



ELOISE B. CRAM 



Of the Bureau of Animal Industry, United States Department of Agriculture 



lZ6i 



o N 





UNITED STATES 



GOVERNMENT PRINTING OFFICE 



WASHINGTON 



1927 



