\l 



Issued June 2.5, 1915. 



United States Department of Agriculture, 



OFFICE OF THE SECRETARY. 



Report JN^o. lOT. 



[Contribution from the Bureau of Entomology, L. O. Howard, Chief.] 



CONTRIBUTIONS TOWARD A CLASSIFICATION AND BIOLOGY 

 OF THE NORTH AMERICAN CERAMBYCID.E. 



LARY/E OF THE PRIONIN.E. 



BY 



F. C. CRAIGHEAD, 



Entomological Assistant, Forest Insect Investigations, 

 Bureau of Entomology. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1916. 



