FIG. 43. WING OF STABLE-FLY (_Stomoxys calcitrans_) 62 FIG. 44. WING OF HOUSE-FLY SHOWING PARTICLES OF DIRT ADHERING TO IT 62 FIG. 45. LAST THREE SEGMENTS OF LEG OF HOUSE-FLY 62 FIG. 46. FOOT OF HOUSE-FLY 63 FIG. 47. LARVA OF HOUSE-FLY 63 FIG. 48. BARN-YARD FILLED WITH MANURE 64 FIG. 49. DIRTY STALLS 65 FIG. 50. PUPA OF HOUSE-FLY 76 FIG. 51. HEAD OF STABLE-FLY 76 FIG. 52. MASS OF MOSQUITO EGGS (_Theobaldia incidens_) 76 FIG. 53. MOSQUITO EGGS AND LARVÆ (_T. incidens_) 77 FIG. 54. MOSQUITO LARVA (_T. incidens_), DORSAL VIEW 77 FIG. 55. EGGS, LARVÆ AND PUPÆ OF MOSQUITOES (_T. incidens_) 78 FIG. 56. LARVA OF MOSQUITO (_T. incidens_) 78 FIG. 57. MOSQUITO LARVÆ AND PUPÆ (_T. incidens_) 79 FIG. 58. ANOPHELES LARVÆ (_A. maculipennis_) 79 FIG. 59. MOSQUITO PUPÆ (_T. incidens_) 80 FIG. 60. MOSQUITO PUPA (_T. incidens_) 80 FIG. 61. MOSQUITO LARVÆ AND PUPÆ (_T. incidens_) 80 FIG. 62. A FEMALE MOSQUITO (_T. incidens_) 81 FIG. 63. A MALE MOSQUITO (_T. incidens_) 81 FIG. 64. HEAD AND THORAX OF FEMALE MOSQUITO (_Ochlerotatus lativittatus_) 82 FIG. 65. HEAD AND THORAX OF MALE MOSQUITO (_O. lativittatus_) 82 FIG. 66. HEAD OF FEMALE MOSQUITO 83 FIG. 67. CROSS-SECTION OF PROBOSCIS OF FEMALE AND MALE MOSQUITO 83 FIG. 68. WING OF MOSQUITO (_O. lativittatus_) 86 FIG. 69. END OF MOSQUITO WING HIGHLY MAGNIFIED 86 FIG. 70. DIAGRAM TO SHOW THE ALIMENTARY CANAL AND SALIVARY GLANDS OF A MOSQUITO 87 FIG. 71. SALIVARY GLANDS OF MOSQUITOES 87 FIG. 72. HEADS OF CULICINÆ MOSQUITOES 90 FIG. 73. HEADS OF ANOPHELINÆ MOSQUITOES 90 FIG. 74. WING OF _Anopheles maculipennis_ 90 FIG. 75. WING OF _Theobaldia incidens_ 90 FIG. 76. A NON-MALARIAL MOSQUITO (_T. Incidens_), MALE, STANDING ON THE WALL 91 FIG. 77. FEMALE OF SAME 91