LIST OF ILLUSTRATIONS. 



PLATES. 



1. Papilio asterias — Butterfly, Caterpillar, and Chrysalis Facing title. 



TEXT FIGURES. 



I'm-.'.'. 



Fig. 1. Habrocyius tliyridopterigis, showing principal parts of an insect 1 



2. Diabrotica 12-punctata, showing transformations: a, Beetle; b, egg; 



c, larva; (/, end of larva; e, work of larva; /, pupa 2 



3. One of the Thysanura or fishnioths, Lepisma saccharin' i 5 



4. A springtail, Entomobrija languinosa 6 



5. A white ant, Termes flavipes: a, Worker; b, male; c, e, f, stages of 



female; d, soldier *> 



6. One of the bird-lice, Goniodes falcicornis 7 



7. A treedouse, Psocus venosus 7 



8. A stonefly, Pteronarcys regalis 8 



9. A dragonfly, Plathemis lydia 8 



10. An earwig 



11. One of the cockroaches, Blatta orientalis: a, Female; b, male; c, side 



view; d, young 9 



12. A Mantid, Vales townsendi 10 



13. A grasshopper, Schistocerca amerlcana 10 



14. The katydid, Cyrtophyllus perspicillatus 11 



15. A mole-cricket, Scapleriscus didactylus 11 



16. A tree-cricket, Orocharis saltator: a, Female; b, male 11 



17. A Pentatomid bug, Stirelrus anchorago: a, Adult; b, nymph 12 



18. The red-bug, Cimex lectidarlus 1 '■> 



19. A Coreid bug, Leptoglossus opposilus 13 



20. The chinch bug, Blissus leacopterus, a Lygseid 13 



21. One of the Capsidse, Lygus pratensis 14 



22. A Tingited bug, Gargaphiaangidata 14 



23. Adult and young of a leafhopper or Jassid, Oncometopia later idix 15 



24. A tree-hopper, or Membracid, Ceresa bubalus: a, Side view; b, top 



view 15 



25. The 17-year locust, Tibicen septendecim: a, With wings spread; b, with 



folded wings; c, nymph 15 



26. A plant-louse, Iihopalosiphum violx: a, Adult; b, wings; c, larva; <l, 



nymph 16 



27. A mealy bug, Dactylopius citri - ll> 



28. The head louse, Pediculus capitis -- -- "• 



29. One of the Thysanoptera, Thrips tabaci: a, Adult; b, antenna of same; 



c, young larva; e/, full-grown larva 17 



30. An ant-lion, or Myrmeleon 17 



31. Myrmeleon larva 17 



32. A lacewing fly, Chrysopa: a, Fggs; b, larva; c, cocoons; </, fly with left 



wings removed L8 



IX 



