Bui. 48, Div. of Entomology, U. S. Dept. of Agriculture. 



Plate V. 



Work of the Spruce-destroying Beetle. 



a. Primiirypallcry: /-, l«.riiiK.s i.iiikoil in .•<i.k-: <•, cntniiici- inid .iiurul l.iim.w ilimiicli the i>iu-ki-.l 

 Ijonnjfs; rf, lanal mines. (From Yearbook, U. S. Dept. of AKncultiiri". I'.xrj.) 



28235— No. 4S— 04- 



