Coarse writing bark beetle, T o m i c ii s c a 1 1 i g r a p h u s Germ. 



1 Piece of white bark showing exit holes 



2 Base of a badly infested tree from which bark illustrated at figures i and 



3, was taken 



3 Same as 2, except that a portion of the bark has been removed to show 



the condition beneath 



772 



