ILLUSTRATIONS. 



Plate X. Work of the peach-tree barkbeetle (P/iteo<ri6asZi?nmar(.s): Fig. 1. — 

 Gum exuding through burrows made in bark of peach tree. 



Fig. 2. — Exit holes in bark of peach tree 92 



XI. Work of the peach-tree barkbeetle (P/itej/rifiw.'fZi/ttmar/.s): Fig. 1. — 

 Orchard severely pruned April 19, 1908. Fig. 2. — Gum exuding 

 . throughburrowsmadeinbarkof cherry tree. Fig. 3. — Removing 

 stumps of trees supposed to have been killed by the barkbeetle. . 94 



TEXT FIGURES. 



Fig. 18. Work of the peach-tree barhheetle {Phloeolribus liminaris): Galleries 



in limb of peach tree , 96 



19. Work of the p^ach-tree harkheeile {Phloeotr thus Uminaris): Galleries 



in wood of peach tree 97 



20. The peach-tree barkbeetle {Phlaeofribus liminaris): Adult, egg, larva, 



pupa - - - 99 



IV 



