LIST OF ILLUSTRATIONS xv 



FIG. PAGE 



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



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



42. Aedes fuscus, adult female, 158 



48. Toxorhynchites rutilus, adult female, . . . .154 



44. Oasterosteus aculeatus — Stickleback, . . . .158 



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



46. Fmidulus notatus— Tloi> -minnow, 160 



47. Lepomis pallidns — Sunfish, 163 



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



male, 230 



49. Claws of Front Feet of Culex pertiirbans, male and fe- 



male, 231 



50. Wing of Culex consohrinus and Culex pipiens, showing 



petiole of first submarginal cell, ..... 233 



