LIST OF ILLUSTRATIONS. 



PLATES. 



I. Eggs, Pupae, and Cocoons of Insects 



II. Larvae of Insects 



III. Odonata, Orthoptera, Neuroptera, Hemiptera 



IV. Lepidoptera 



V. Diptera, Coleoptera, Hymenoptera 



VI. Mantidas, Locustidae 



VII. Forficulidae, Blattidae, Phasmidas, Acrididae 



VIII. Acrididae 



IX. Acrididae 



X. Acrididae, Locustidas 



XI. Locustidae, Gryllidas 



FIGURES IN THE TEXT. 



PAGE 



1. Map of Connecticut, showing the Life Zones in the State 21 



2. The four stages in the Life Cycle of an Insect : Gypsy Moth, 



Porthetria dispar . . . . . -Si 



3. Egg mass of Tent Caterpillar on apple twig . . 32 



4. Melanoplus bivittatus. Diagram showing principal parts of 



a locust . . . . . . .48 



5. Nomotettix cristatus. Lateral and dorsal views of head . 66 



6. Nomotettix cristatus. Lateral view, showing crest of pro- 



notum and sinuses of lateral lobes . . .66 



7. Nomotettix cristatus. Cross section of body . . (^ 



8. Tetttx ornatus. Lateral and dorsal views of head . . 68 



9. Tettix ornatus. Sinuses of lateral lobes of pronotum . 68 



10. Tettix granulatus. Lateral and dorsal views of head] . 68 



11. Paratettix cucullatus. Lateral and dorsal views of head . 69 



12. Tettigidea parvipennis. Dorsal view of head . . 70 



13. a. Antenna of Pseudopomala brachyptera; b, Antenna of 



Tryxalis brevtcornis . . . . -73 



14. Tryxalis brevicornis. a. Lateral view of tip of female abdo- 



men ; b, Ventral view of tip of male abdomen . . 73 



15. Pseudopomala brachyptera. a. Lateral view of tip of female 



abdomen ; b, Ventral view of tip of male abdomen . 74 



