PLATE V. 

 Old gaUerien of Dendroctoiwa piceaperda hi spruce. 



(I, (Trooves on the surface of the wood of a tree that had been dead about twelve 



years. 

 h. Wounds, or incomplete galleries, in bark of living tree: wound tilled with ])itch. 



c, From dead tree. 



d, From living tree, in which some of the wounds were healing. 



e, From old dead tree, the sap wood of which was decaying. 



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