PLATE XXXVIII 



Fig. I. — Agrilus bilinealus: Eggs in position in the bark of an oak tree. '2 natural 

 size. 



Fig. 2. — Agrilus bilinealus: Cluster of newly laid eggs. X6. 



Fig. 3. — Agrilus biliiieatus: Eggs shortly before hatching. X6. 



Fig. 4. — Agrilus bilinealus: Newly hatched lar\'a. X6. 



Fig. 5. — Agrilus bilinealus: Mature larva. X6. 



Fig. 6. — Agrilus bilinealus: Larva in its cell. Section made perpendicular to the 

 surface of the bark. A, Point at which adult will emerge; B, burrow stopped With 

 frass. X6. 



Fig. 7. — Agrilus biliiieatus: Pupa in cell. Section made parallel to the surface of 

 the bark. X6. 



Fig. 8. — Agrilus bilinealus: Adult female. X6. 



Fig. 9. — Agrilus bilinealus: Adult male. X6. 



Drawings by Helen A. Sanborn. 



(294) 



