Coarse writing bark beetle, T o in i c u s c a 1 1 i lj r a p h u s Germ. 



1 Inner aspect of badly eaten white i)ine l)ark 



2 Several (;'alleries [)reser\ ed In' infiltrated pitch 



3 Internal aspect of badly scored bark 



4 Portion of bark removed from a tree which had been dead some years. 



most of the galleries being jjreserved by infiltrated pitch 



770 



