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

FIG. 78. A MALARIAL MOSQUITO (_A. maculipennis_), MALE,
STANDING ON THE WALL 91

FIG. 79. FEMALE OF SAME 91

FIG. 80. EGG OF _Anopheles_, SIDE VIEW 92

FIG. 81. EGG OF ANOPHELES, DORSAL VIEW 92

FIG. 82. ANOPHELES LARVAE 92

FIG. 83. ANOPHELES LARVAE 93

FIG. 84. ANOPHELES LARVA, DORSAL VIEW 93

FIG. 85. ANOPHELES PUPAE RESTING AT SURFACE OF WATER 93

FIG. 86. SALT-MARSH MOSQUITO (_Ochlerotatus lativittatus_);
MALE 98

FIG. 87. SALT-MARSH MOSQUITO (_O. lativittatus_); FEMALE 98

FIG. 88. TOP-MINNOW (_Mollienisia latipinna_) 99

FIG. 89. DRAGON-FLIES 99

FIG. 90. THE YOUNG (NYMPH) OF A DRAGON-FLY 100

FIG. 91. THE CAST SKIN (_exuvae_) OF A DRAGON-FLY NYMPH 100

FIG. 92. DIVING-BEETLES AND BACK-SWIMMERS 101

FIG. 93. KILLIFISH (_Fundulus heteroliatus_) 102

FIG. 94. STICKLEBACK (_Apeltes quadracus_) 102

FIG. 95. AN OLD WATERING-TROUGH, AN EXCELLENT BREEDING-PLACE
FOR MOSQUITOES 103

FIG. 96. HORSE AND CATTLE TRACKS IN MUD FILLED WITH
WATER 108

FIG. 97. A MALARIAL MOSQUITO (_Anopheles maculipennis_)
MALE 108

FIG. 98. A MALARIAL MOSQUITO (_A. maculipennis_) FEMALE 109

FIG. 99. DIAGRAM TO ILLUSTRATE THE LIFE-HISTORY OF THE
MALARIAL PARASITE 110

FIG. 100. MALARIAL MOSQUITO (_A. maculipennis_) ON THE WALL 111

FIG. 101. MALARIAL MOSQUITO (_A. maculipennis_) STANDING ON
A TABLE