SMITHSONIAN INSTITUTION 



UNITED STATES NATIONAL MUSEUM 

 Bulletin 85 



A MONOGRAPH OF THE 



JUMPING PLANT-LICE OR PSYLLID^ 



OF THE NEW WORLD 



DAVID L. CRAWFORD 



Of the Laboratory of General Biology, Cornell University 

 Ithaca, New York 





WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1914 



