LIST OF DRAWINGS 15 



FIO. TO PACK PAGE 



69. Female cockroach, PeriplaneUi oritntalis. (Dept. of Agri- 



culture, U.S.A.) 258 



70. Egg case of a cockroach 258 



71. A female termite 258 



72. A destructive household beetle, Anobium domesticum. (Afu-r 



Butler) 266 



73. Gibbium scotias 266 



74. The book louse, Alrojws divinatoriu. (Dept. of Agriculture, 



U.S.A.) 270 



75. The silver fish, Lcpisma saccliarina. (Dept. of Agriculture, 



U.S.A.) 270 



70. The human Hen, Pulcx irritant. (Dept. of Agriculture, 



U.S.A.) . .274 



77. A dog flea. (After Brumpt) 274 



78. A female Chigoe flea, Dermatophilus penetrans . . . 278 



79. The bed bug, Uimcx lectularins 278 



80. Rostrum of louse. (Dept. of Agriculture, U.S.A.) . . 278 



81. Human lice: A, Head louse. B, Body louse. C, Crab louse. 282 



82. Egg or "nit" of head louse. (After Brumpt) . . . 284 



83. The human bot fly, Dermatobia haminis. (After Terzi in 



Hanson's Tropical Diseases) ...... 284 



84. Early larval stage of Dermatobia hominis. (Dept. of Agri- 



culture, U.S.A.) 286 



85. Later larval stage of Dcrmatobia hominis. (After Surcouf) 288 



86. A mosquito, Janthinosoma lutzi. (After Surcouf) . . . 288 



87. The Tumbu fly, ('ordylobia anthropophagi i. (After Ter/i in 



Manson's Tropical Diseases) ...... 290 



88. The Cayor worm, Cordylobia anthropophaya. (After Terzi in 



Manson's Tropical Diseases) 290 



89. The Congo floor maggot fly, Anchmeromyia liiteola. (After 



Terzi in Manson's Tropical JHseases) 292 



90. The Congo floor maggot fly, A \tchmeromyia luteola. (After 



Terzi in Manson's Tropical Diseases) 292 



91. The screw worm fly, Chrysomyia macellaria. (After Terzi in 



Manson's Tropical Diseases) 294 



92. The screw worm, Chrysomyia maceUaria. (After Terzi in 



Manson's Tropical Diseases) . . ... 294 



93. Human itch uiites, Sarcoptes scabei. (After Carazzi) . . 296 



94. The human follicle mite, Demodex fulliculorum var. hominis. 



(After Carazzi) 296 



95. A harvest mite, Lepius autumnalis. (After Carazzi) . . 296 



96. Conducting an experiment with Calosoma sycophanta larva. 



(After Howard and Fiske) 306 



97. A nymenopterous parasite of the gipsy moth, Annstatus 



Ufasciatus (female). (After Howard and FiskeJ . . 308 



98. A hymenopterous parasite of the gi^y moth, Schedius 



kuvance (female). (After Howard and Fiske) . . . 308 



99. Parasitised eggs of the gipsy moth. (After Howard and Fiske) 310 

 100. Gipsy moth larva killed by the hymenopterous parasite Apan- 



tele* fulvipt*. (After Howard and Fiske) . . . 310 



