Xii LIST OF ILLUSTRATIONS 



FIGTTBK PAGE 



28. The yellow fever mosquito. ( x 7.) . . . .67 



29. Trichinella spiralis embedded in human muscle, much 



enlarged 73 



30. Roach or golden shiner. After Jordan .... 87 



31. Top-minnow. ( x 1|.) After Jordan and Evermann . 88 



32. Spraying a ditch for mosquitoes with a knapsack sprayer 91 



33. Screen covering whole window 99 



34. Screen over lower half of window 99 



35. Under side of head of bedbug showing the beak, enlarged 109 



36. Nymph of a species of Aradus, much enlarged . .116 



37. Egg-case of croton-bug. ( x 3.) . . . . . 132 



38. American cockroach. ( x 1.) 135 



39. Oriental cockroach. ( x f .) 136 



40. Australian roach, (x 1J.) 137 



41. Cross-section of a roach trap . ... . . . 140 



42. Tin box trap for roaches 140 



43. Human flea, much enlarged 147 



44. Cat and dog flea, much enlarged 147 



45. Egg of flea. ( x 38.) 150 



46. Larva of a flea, above; cocoon, below, much enlarged. 



After Howard 151 



47. Interior of an ant's nest. From Wheeler's " Ants " . 167 



48. The red ant. ( x 20.) 174 



49. The small black ant. ( x 14.) . . . . . .176 



50. The large black carpenter ant, enlarged .... 178 



51. The queen Argentine ant, enlarged. After Woodworth 183 



52. Case-making clothes moth. ( x 4.) . . . .192 



53. Case of the case-making clothes moth ( x 3.) . . 193 



54. Webbing clothes moth. (x4.) 195 



55. Egg of the webbing clothes moth. ( x 25.) . . .196 



56. Larva of the webbing clothes moth, (x 6.) . . . 197 



57. Tapestry moth. (x3.) 197 



58. The "Buffalo bug" (carpet beetle). (x9.) . . . 204 



59. A common lady-bird. ( x 13.) 205 



60. Cast skin of larva of "Buffalo moth." ( x 6.) . . 206 



61. Black carpet beetle. ( x 9.) 210 



