xii LIST OF ILLUSTRATIONS 



Cyanide Bottle ........... 180 



Mounted Beetle ... ....... 181 



Spreading Board ......... . 182 



Young and Old Locust ..... ' . . . .184 



Compound Eye of Dragon-Fly ....... -185 



Mouth Parts of Locust . . ....... 186 



Breathing Pore of a Cockroach ....... 187 



Dragon-Fly ........... zSg 



Dragon-Fly Emerging from Nymph Case ...... 190 



Some Aquatic Insects ...... . . .191 



Wing of a Bug . .......... 192 



Head and Beak of a Bug . ....... 193 



Cage of Luna Moths .......... 194 



Insect Cage ........... 195 



Eggs and Young Caterpillars of Cabbage Butterfly . . . .196 



Milkweed Caterpillar on Milkweed Leaf ...... 197 



Milkweed Caterpillar Getting Ready to Pupate . . . 197 



Chrysalis of Milkweed Butterfly . ...... 198 



Milkweed or Monarch Butterfly Just Out of Chrysalis . . .198 

 Scales on the Wing of a Moth ........ 199 



Cecropia Moth Just Out of Cocoon ....... 200 



Caterpillar Spinning Cocoon and Finished Cocoon .... 201 



A Beetle ...... ...... 202 



Head and Mouth Parts of Predaceous Beetle ..... 202 



House Fly ............ 203 



Honey Bees: Drone, Queen, and Worker ...... 204 



Head of Honey Bee .......... 205 



Sting and Poison Bladder of Honey Bee ...... 206 



Hornet's Nest . . . . ... . . .* . 208 



Brood Comb Inside a Hornet's Nest . . . ..'. . 209 



Mosquito, Male and Female . -. . . . . .212 



Development of Mosquito . . . .... . '. . 213 



Plant-Lice ..... , . . -. . . : , . 217 



Tent of Webworms . . . . . . "..,.:.... 220 



Butterflies and Bumble-Bees on Clover . . -. '. , ; . 225 

 Sphinx Moth Probing Flower . '. . 8 .-., . ' . / . 226 

 Ant Cage . . . . . . . : i " . ."/>.. 231 



Cricket . . . . ' . .-'-.'. . . . . 233 



Cricket's Sounding Wing . . ' . ...... 234 



Ear of Cricket . . . _ v . , . . . . . . . . 234 



Katydid ........ .... 235 



Cicada ........... . 235 



Molted Skin of Cicada . . . . . . . . . 236 



Monarch Butterfly Sipping Nectar from Clover . . . .237 



Comma Butterfly Just Out of Chrysalis . . . . . -237 



Sphinx Moth with Extended Proboscis . ..... 238 



Cecropia Caterpillar ...... - . . . . 240 



Luna Moth ........... 242 



Walking Stick ........... 244 



Protective Coloration of Bark Moth . ... . . . 245 



