U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF ENTOMOLOGY— BULLETIN NO. 58, Part IL 



L. O. HOWARD. Entomolosist and Chief of Bureau. 



Ill A .^.: 



SOME INSECTS INJURIOUS TO FORESTS. 



THE 



WESTERN PINE-DESTROYING 



BARKBEETLE. 



J. L. WEBB, 



Special Field Agent, Forest Insect Investigations. 



Issued August 18, 1906. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 1906. 



