LIST OF ILLUSTRATIONS. 



COLORED PLATES. 



figure page 



The Metamorphosis of Insects Frontispiece 



WOOD ENGRAVINGS. 



1. Destructive Grasshoppers 4 



2. Aphis, or Plant Louse 7 



3. Hessian Fly ; a, Larva ; l\ Pupa 13 



4. Ichneumon (Macrocentrus) 15 



5. Tachina and Larva 16 



6. Ant-Lion 17 



7. Ant-Lion, Adult iS 



8. Water Tiger iS 



9. Gothic Dart Moth 22 



10. Lance Bearer 23 



n. Cochrane's Dart Moth 23 



12. Wheat Wire Worm 26 



13. Snapping Beetle and Larva 27 



14. Wire Worm 27 



15. Wire Worm 27 



16. Fire Fly 28 



17. Luminous Wire Worm 28 



18. May Beetle and Young 29 



19. Pupa of May Beetle 29 



20. Calosoma calidum 31 



21. Goldsmith Beetle and Larva 32 



22. Seventeen Year Cicada, Eggs and Pupa 33 



23. Larva of Seventeen Year Cicada 34 



24. Aphides and Ant 3'> 



25. Pemphigus 3^ 



26. Larva of Syrphus 3S 



26a. Syrphus Fly 3H 



27. Lady-Bird and Young 38 



28. Aphis-Eating Mite 38 



29. Pine Scale Insect, Male, enlarged 39 



30. Female Stylops . . • 40 



31. Male Stylops 40 



32. Pine Scale Insect 41 



33. Parasite of Scale Insect 42 



iii 



