U. S. DEPARTMENT OF AGRICULTURE. \ 



BUREAU OF ENTOMOLOGY BULLETIN NO. 58, Part IL 



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



SOME INSECTS INJURIOUS TO FORESTS. 



THE 



WESTERN PINE-DESTROVTX(; 



BARKBEETLE. 



f. L. WEBB, 



Specidl Fif/il Af/riil, Fari'M Intii'ct Iiiresligalions. 



Issued Augi'st 18, 1906. 



WASHINGTON: 



OOVERXMKNT riilNTINC. OF KICK. 



1 1> <; . 



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