EXPLANATION OF PLATE LXX. 



Fig. 1. Larva of Dryoeoetes affaber Mannh. 



Fig. 2. Pupa of the same. 



Fig. 3. Adult of the same. 



Fig. 4. Pupa of Tomicus pini Say. 



Fig. 5. Adult of Tomicus pini. 



Fig. 6. Priontis emarginatus Say. 



Fig. 7. Criocephalua produchis Le Conte. 



Fig. 8. Dectes apinosus (Say). 



Fig. 9. Pogonocherus mixius Haldeman. 



Fig. 10. Mecas pergrata Say. 



Fig. 11. Chrysoiothris irinervia (Kirby). 



Fig. 12. Buprestis rusticorum Kirby. 



Fig. 13. Dicerca prolongata Le Conte. 



Fig. 14. Melanophila drummondi Kirby. 



Fig. 15. Dermestes marmoratus Say. 



Fig. 16. Dendroctonus oiesus Mannh. 



Fig. 17. Cocoon of Donacia proxima. 



Fig. 18. Larva of Donacia proxima. 



Fig. 19. Adult (enlarged twice) of Donacia proodma Kirby. 



Fig. 20. Pleotonms pallens Le Conte, male.— a, dorsal and side view of the larva ; i, 



dorsal, and c, ventral view of the mouth-parts. 

 Fig. 21. Female of Pleotomus pallens. 

 Fig. 22. Phryganidia californica Pack. ; male. 



Note.— Figs. 1-16 and 20 were drawn by Mr. J. S. Kingsley, and Figs. 17-19, 21, and 

 22 were drawn by Mr. J. H. Emerton. 



