LIST OF ILLUSTRATIONS xv 



PIG. PAGE 



41. Full-grown Larva and Pupa of Psorophora niliata, with 



enlarged parts, . . . . . . . .149 



43. Aedes fuscus, adult female, 153 



43. Toxorhynchites rutilus, adult female 154 



44. Gasterosteus aculeahis — Stickleback, .... 158 



45. Oambusia affinis, male and female — Top-minnows, . 159 



46. Fundulus woto^ws— Top -minnow 160 



47. Lepomis pallidus — Sunfish, 163 



48. Claws of Front Feet of Culex stimulans, male and fe- 



male, 330 



49. Claws of Front Feet of Culex perttirhans^ male and fe- 



male, ... 331 



50. Wing of Culex consobrimts and Culex pipiens, showing 



petiole of first submarginal cell, ..... 333 



