LIST OF TEXT ILLUSTRATIONS 



Fig. i. Head and tongue of worker bee 



Fig. 2. Heads of queen and drone .... 



Fig. 3. Queen cells and worker brood of honey bee 



Fig. 4. Queen of the common honey bee 



Fig. 5. Legs of different bees . . 



Fig. 6. Legs of different bees ... 



Fig. 7. Sphecius speciosus carrying Cicada to its burrow 



Fig. 8. Adult Cicada bearing eggs of Sphecius 



Fig. 9. Larva of digger wasp in Cicada burrow 



Fig. 10. Same, spinning its cocoon 



Fig. ii. Immature stages of the digger wasp 



Fig. 12. Cocoon of same . . . . 



Fig. 13. Polistes pallipes 



Fig. 14. Polistes rubiginosus 



Fig. 1 5. Odynerus flavipes and its nest in a spool . 



Fig. 1 6. Tiphia inornata 



Fig. 17. Chrysis sp 



Fig. 1 8. Laelius trogodermatis . . . . 



Fig. 19. Goniozus sp. parasitic on larvae of codling moth 



Fig. 20. Solenopsis xyloni . . . 



Fig. 21. Crematogaster lineolata . 



Fig. 22. Monomorium minutum 



Fig. 23. Tetramorium csespitum . . . 



Fig. 24. Ants at play 



Fig. 25. Pelecinus polyturator . . . . 



Fig. 26. Baeus americanus . . 



Fig. 27. Cynips spongifica 



Fig. 28. Diastrophus nebulosus 



Fig. 29. Pachyneuron micans 



Fig. 30. Chalcis ovata 



Fig. 32. Larvae of Euplectrus comstockii 



Fig- 33- Pupae of same 



