LIST OF ILLUSTRATIONS ix 



PAGE 



Rose Chafer. From Harris. , . 133 



Eyed Elater. From Harris 134 



Leaf Beetle. From Harris 135 



Colorado Potato Beetle . . . . ..*. . . I 35 



Flea Beetle . . 139 



Round-headed Apple-tree Borer. From Harris . , . . . 140 

 Plum Curculio . . . ....- . . . . 142 



Strawberry Weevil. Redrawn from Riley 142 



Peach injured by Curculio . . . . . . . . . 143 



Mexican Cotton Boll Weevil . . . . ... . .144 



Infested Cotton Square . . . . ,,-,. . . . . 145 



Cherry Sawfly . . .... .. .. 149 



Willow Sawfly Larva . ; .... . . . . 150 



Head of Aphis. Redrawn from Slingerla nd , . . . -155 



Bucket Pump . . . .., 156 



A Simple Spraying Outfit. Redrawn from Marlalt . . . .158 

 Powder Gun . . . . . . . .*.. .. .161 



Tiger Beetles. From Harris . . 163 



Ground Beetles. From Harris . . . . . . . . 164 



Tiger Beetle Larva. From Harris . 165 



Ladybird Beetle and Pupa. From Harris 165 



Blister Beetle. From Harris . ..... . . .166 



Soldier-bug . . . . . 166 



Robber Fly. From Harris . . 168 



Syrphus Fly 169 



White-faced Hornet. From Packard 170 



Dragon-fly ' 171 



Egg Mass of Mantis . . 171 



Dragon-fly. From Harris 173 



Ichneumon Fly ovipositing in Cocoon . 174 



Long-tailed Ichneumon Fly. From Harris 1 75 



Ichneumon Fly and Chrysalis. Photography by A. H. Verrill . . 1 76 



Ichneumon Flies. From Harris 177 



Cocoons of Microgaster Flies. From Harris 177 



Caterpillar with Cocoons of Parasites 178 



Parasite of Grain Aphis. Redrawn from Washburn . . . .179 

 Chalcid Parasite of Gypsy Moth's Eggs. After Howard . . .184 



Pelecinus Fly . 185 



Tachinid of Army Worm. Drau<n from Photograph by Slingerland . 1 88 



Tachinid Parasite of Gypsy Moth. After Fiske 190 



Cherry Blossoms . 194 



