ILLUSTRATIONS. 



Page. 



Fig. 1. — Culex pnngens : adnlt 10 



2. — Culex piiiigens : eggs and young larvae 11 



3. — Culex pungens : head of larva 13 



4. — Culex pnngens : larva and pnpa 15 



5. — Pulex serraticeps : egg, adult, etc 25 



6. — Pulex serraticeps : larva 27 



7. — Ciraex lectularius : adult 32 



8. — Cimex lectularius : egg and young larva 33 



9. — Cimex lectularius : larval stages 35 



10. — Conorhinus sanguisuga : pupa and adults 39 



11. — Conorhinus sanguisuga : larva and egg 40 



12. — Conorhinus sanguisuga : head, showing mouth-parts 41 



13. — Musca domestica : adult, puparium, etc 43 



14. — Musca domestica : larva 45 



15. — Musca domestica : pupa 46 



16. — Scutigera forceps : adult 48 



17. — Scutigera forceps : larva 49 



18. — Bry ohia pratensis : females and details 51 



19. — Bryobia pratensis : larva 52 



20. — Gryllus domesticus : adult 53 



21. — Gryllus assimilis : adult 54 



22. — Gryllus assimilis : wings 55 



23. — Anthrenus scrophularire : all stages 58 



24. — Attagenus piceus : all stages 61 



25. — Tinea pellionella : adult and larva 63 



26. — Tineola biselliella: adult, larva, and cocoon 66 



27. — Trichophaga tapetzella : adult moth 67 



28. — Termes flavipes : male and female 70 



29. — Termes flavipes : head of winged female 72 



30. — Termes flavipes : newly hatched larva and egg 73 



31. — Termes flavipes : different forms 74 



32. — Lepisma saccharina : adult 76 



33. — Lepisma domestica : adult 77 



34. — Atropos divinatoria : adult 79 



35. — Lepidocyrtus americanus : adult, dorsal view 82 



36. — Lepidocyrtus americanus : adult, ventral view 82 



37. — Lepidocyrtus americanus: adult, lateral view 83 



38. — Periplaneta americana: adult 84 



39. — Periplaneta americana : egg capsule 89 



40. — Periplaneta australasise : adult and pupa 91 



41. — Periplaneta orientalis : different forms 99 



42. — Phyllodromia gennanica : various stages 92 



43. — Monomorium pharaonis : female and worker 96 



44. — Monomorium minutum : male, female, and worker 97 



