124 THE ENTOMOLOGIST. 
Fig. 2 
Fig. 1. 
Fig. 4. Fig. 5. Fig. 6. Fig. 7. 
Fig. 1—Larva of Pecilocampa populi carrying Cocoons 
of Apanteles insidens. x 2. 
Fig. 2.—Cocoon of A. gonopterygis. x 2. 
Fig. 3.—Cocoons of A. zygenarum. Slightly enlarged. 
Fig. 4.—Cocoons of A. simulans. Slightly enlarged. 
Fig. 5.—Section of Ball of Cocoons of A. spurius. x 2 
Fig. 6.—Cocoon of A. juniperate. x 12. F 
Fig. 7.—Ball of Cocoons of A. congestus. Natural size. 
