Bui. 48. Dn/. of Entomology, U. S. Dept. of Agriculture. 



Plate XI. 



Work of the Pine Destroying Beetle of the Black Hills Forest Reserve. 



Fi.i; 1. Siniill iri'slilv iillarUcl iiiiic tree, -liowiiiir pitili lulu*.— Kic. -'. Marks ..f priiiiiiry (.'iiHi-ri.-s 

 .>ii tlu- siirfaiT (ifwoiMl wlnii l>iirk is rcliiovcl. — Kijr. X Freshh atln<k.<l tror. show iiiK i.il.h 

 liiU's. .Viljoiiiiiij; in-i- m.l allaik.<l. — Fiv. I. Ii«a.l tree: out. r Lark rcni<>vo<l l,y w.MMliH.kcrs. 

 (From Hill. 3J. ii. s.. Iiiv. oi Knt<.iii.>l.>K'y, V. .•^. l>f|.t. <.i Atfriiiiltiire. ( 



