xiv Illustrations 



PAGE 



Fig. 7. — Megarhinus septentrionalis . . 37 



Fig. 8. — Grabhamia jamaicensis, Ochlerotatus 



sollicitans (adults) ... 46 



Fig. 9. — Psoropkora ciliata, P. howardii (adults) 53 

 Fig. 10 — Labial plates of larvae . . -59 



Fig. 11. — Mandibles of non-insectivorous larvae 62 

 Fig. 12. — Labrum of Ochlerotatus sollicitans 



larva ..... 66 



Fig. 13. — Maxillae of larvae .... 68 



Fig. 14. — Mandibles of larvae ... 73 



Fig. 15. — Maxillae of non-insectivorous larvae . 77 

 Fig. 16. — Pupae ...... 81 



Fig. 17. — Pupa of Anopheles crucians . . 86 



Fig. 18. — Anopheles crucians, A. punctipennis 



(adults) ..... 89 



Fig. 19. — Development of malaria parasite . 92 

 Fig. 20. — Anopheles maculipennis ... 96 

 Fig. 21. — Eggs of Anopheles . . . .100 



Fig. 22. — Stegomyia calopus (adult) . .107 

 Fig. 23. — Egg of Stegomyia calopus . 114 

 Fig. 24. — Pupa of Stegomyia calopus . . 117 

 Fig. 25. — Anopheles maculipennis larva . .126 

 Fig. 26. — Comb of larva of Anopheles maculi- 

 pennis 133 



Fig. 27. — Last segments of Anopheles crucians 



larva . . . . .137 



Fig. 28. — Dorsal view of same . . . 141 



Fig. 29. — Labiai plate of Anopheles puncti- 



pennis larva . . . .143 



