Plate 3. — The Bronze Birch Borer, Agi-iJus anxius. 



Fig. 1. — White birch injured by borers- 

 top dead. 



Fig. 2. — Larval mines on the wood sur- 

 face; showing a larva in its 

 hibernating cell. 



Fig. 3.— The adult beetle. 



Fig 4. — The commencement of a larval 

 mine; one-half the entrance 

 hole is shown at the white 

 arrow; the mine passed 

 slightly below the wood sur- 

 face at the black arrow. 



[1031 



