xiv LIST OF ILLUSTRATIONS 



FIGURE PAGE 



94. Sugar mite (G. robustus). (x50.) After Banks . 286 



95. Tarsi I, IV, and hairs, h, from T. longior, enlarged. 



After Banks 287 



96. The parent fly of a cheese skipper. (x9.) . . . 288 



97. Cheese skipper, maggot of P. casei. ( x 5.) . . . 290 



98. Pupa of cheese skipper, enlarged 290 



99. Cigarette beetle. ( x 20.) 293 



100. Larva of cigarette beetle. ( x 20.) . . . .294 



101. Drug-store beetle. ( x 24.) 295 



102. Larva of drug-store beetle. ( x 20.) .... 297 



103. Itch mite, female. ( x 85.) 302 



104. Itch mite, male. ( x 125.) 303 



105. Burrows of the itch mite beneath the skin, diagrammatic 304 



106. Head louse. ( x 13.) 310 



107. Body* louse. ( x 20.) 312 



108. Crab louse. ( x 20.) 314 



109. Adult of harvest mite (T. holosericeum). ( x 20.) After 



Railliet 318 



110. Young of harvest mite. ( x 60.) After Railliet . 321 



111. Yellow-jacket. ( x 3.) 326 



112. Bald-faced hornet, (x 2.) 326 



113. A punkie (C. stellifer), enlarged. After Pratt . . 331 



114. A punkie (C. guttipennis), enlarged. After Pratt . 332 



115. Larva and pupa of a punkie (C. guttipennis), enlarged . 



After Pratt . 333 



116. A black-fly (S. pictipes). (x 10.) 341 



117. Larva of the black-fly (S. pictipes). ( x 3.) . . . 342 



118. Pupa of a black-fly (S. pictipes). (x6.)' . . .343 



119. The female mite, much enlarged. After Banks . . 349 



120. The female mite when full of eggs, enlarged. After 



Banks 350 



121. The male mite, enlarged. After Banks . . .351 



122. The clover mite, adult, enlarged. After Marlatt . . 353 



123. A young clover mite, enlarged. After Marlatt . . 354 



124. The house centipede, (x 1.) . . . ... 357 



125. A scorpion, (xf.) 361 



