LIST OF TEXT FIGURES xxiii 



FIQCBE PAOB 



54. Pupa of Aedes argenteus, the Yellow Fever Mosquito. Greatly enlarged. 



(After Howard, Dtar, and Knab) 272 



53. Types op Mosquito Mouth Parts: a. Short palpus form; b, long palpus form 



(Greene) 273 



56. Adult Culex sollicitans. Much enlarged. (Howard) 273 



57. The Yellow Fever Mosquito Aedes argenteus: Adult Female. Much enlarged. 



(Howard) 273 



58. A Malarial Mosquito, Anopheles quadrimaculaius: Male at Left axd Female 



AT Right. Greatly enlarged. (Howard) 274 



59. Submersible Automatic Bubbler for Distributing Oil Over Surface op 



Water. (Ebert) 281 



60. Method of Petrolization with Oil-Soaked Sawdust. (Ebeet) 281 



61. Wristlet Method Used por Breeding Lice. (Hutchison, Photo by Dovenek) 303 



62. Chart Illustrating the Life Cycle op Trypanosoma levyisi. (Pierce) .... 353 



63. Chart Illustrating the Life Cycle of the Dog Tape Worm, Dipylidium cani- 



num. (Pierce) 356 



64. Larva op the European . Rat Flea, Ceratophyllus fasciatus. Greatly enlarged. 



(BisHOPp) 361 



65. The Dog Flea, Ctenocephalus canis: a. Egg; 6, larva in cocoon; c, pupa; d, adult; 



e, mouth parts of same from side;/, antenna; g, labium from below, h, c, d, much 

 ^ enlarged; a, e, /, ^, more enlarged. (From Howard) ' 362 



66. The Human Flea, Pvlex irritans: Adult Female. Greatly enlarged. (Bishopp) 362 



67. The Human Flea, Pulex irritans: Adult Male. Greatly enlarged. (Bishopp) 363 



68. The European Rat Flea, Ceratophyllus fasciatus: Adult Fsmale. Greatly 



enlarged. (Bishopp) 364 



69. The Sticktight Flea, Echidnophaga gallinacea: Adult Female. Greatly en- 



larged. (Bishopp) 365 



70. Head of Rooster Infested with the Sticktight Flea, Echidnophaga gallinacea. 



Somewhat reduced. (Bishopp) 366 



71. The Oriental Roach, Blatta oiientalis: a. Female; b, male; c, side view of female; 



d, half-grown specimen. All natural size. (Marlatt) 377 



72. The German Roach, Blattella germanica: a. First stage; b, second stage; c, third 



stage; d, fourth stage; e, adult;/, adult female with egg case; g, egg case, enlarged; 



h, adult with wings spread. All natural size except g. (From Riley) 378 



73. The American Roach, Periplaneta americana: a. View from above; 6, from be- 



neath. Enlarged one-third. (Marlatt) 379 



74. Bedbug: Egg and Newx,y Hatched Larva: a. Larva from below; b, larva 



from above; c, claw; d, egg; e, hair or spine of larva. Greatly enlarged, natural size 



of larva and egg indicated by hair lines. (Marlatt) 396 



75. Bedbug: a. Larval skin shed at first molt; 6, second larval stage immediately after 



emerging from a; c, same after first meal, distended with blood. Greatly enlarged. 

 (Marlatt) 396 



76. Bedbug: Adult Before Engorgement. Much enlarged. (Marlatt) .... 397 



77. Bedbug, Cimex ledularius: a. Adult female, engorged with blood; 6, same from below; 



c, rudimentary wing pad; d, mouth parts, o, 6, much enlarged; c, d, highly magni- 

 fied. (Marlatt) 397 



78. Chart op Life Cycle of Babesia canis, the Cause op Canine Malignant Jaun- 



dice. (Pierce) 416 



79. Life Cycle op Hwmogregarina canis, the Cause of Canine Anemia. (Pierce) . 421 



80. Tick Life Cycle, Type I. (After Nuttall) 423 



81. Tick Life Cycle, Type II. (After Nuttall) 423 



82. Tick Life Cycle, Type III. (After Nuttall) 425 



83. Tick Life Cycle, Type IV. (After Nuttall) 425 



84. Tick Life Cycle, Type V. (After Nuttall) 426 



85. Tick Life Cycle, Type VI. (Pierce) 426 



86. The Rocky Mountain Spotted Fever Tick, Dermacentor andersoni. (Bishopp) . 437 



87. Model Chicken Roost. (Bishopp) , 446 



88. A Centipede, Scolopendra morsitans. (Bradford) 465 



