INDEX. 



361 



Larvae, 34, 41 

 Leaf bugs, 1 1 1 , 113 

 Leaf chafers: 



bird enemies, 73 

 Lepidoptera, 125 



biological relationships, 130 



characteristics, 123 



distribution, 138 



larval food-getting, 132 



metamorphosis, 131 



mouth-parts, 126 



primitive lepidopters, 129 



setting for collection, 122 



value of order, 132 



wing action, 29 

 Light, dermal sense, 10 



effect on animals, 102 

 Limicolse, 327 



bill, 327 



characteristics, 327 



food, 329 



migrations, 330 



nesting habits, 329 

 Linnseus, 42 

 Lizards, 2 59 

 Lobstera, 238 



Locust, setting for collection, 82 

 Longipennes, 347 



characteristics, 347 



food, 348 

 Loons, 351 

 Lubbock, 14 1 

 Luna moth, 134 



Mallard, 342 

 Mallophaga, 44 

 Mandibles, 4 

 Marsh hawk, 256, 292 

 May beetle, 59, 73 



bird enemies, 73, 74 

 May flies, 213 

 Maxillae, 4 



Meadow lark, 118, 137 

 Merganser, 337 

 Measuring worm, 135 

 Metamorphosis, 33 

 Metazoa, i 

 Midas flies, 201 

 Migrations of birds, 274 



directions within United 

 .States, 274 



guiding sense, 279 



mode of travel, 274, 279 



significance of, 274 



Millipeds, 231 



Minnows, 200 



Mites, 144, 234 



Mocking bird, 289 



Mollusca, 2 



Monarch butterfly, 135 



Monogamy among birds, 280 



Mosaic sight, 8 



Mosquitoes, 176, 193 



development, 194 



hibernation, 199 



immature respiration, 195 



malarial sort, 198 



natural enemies, 200 



preventive measures, 176, 

 201 



scales on wings, 197 



sex distinctions, 198 



economic sorts, 193 

 Moths, 125 

 Mourning dove, 321 

 Mouth-parts : 



bees, ants, wasps, 153 



beetles, 76 



bugs, 99, 108, 126 



dragon flies, 209 



fleas, 226 



flies, 184 



grasshoppers, 4, 87 



May flies, 213 



moths and butterflies, 126 



Neuroptera, 221 



spiders, 231 



stone flies, 217 

 Mud-daubers, 168 

 Muscles of grasshopper, 2, 3 

 Myriapoda, 231, 238 



Naphtha, 55 

 Nectar, 158, 164 

 Nictitating membrane, 297 

 Negro bugs, 113 

 Nervous system: 



birds, 296 



insects, 28 

 Nesting season of birds, 280, 287 

 Nestling birds, food of, 287 

 Nest-making of birds, 284 

 Neuroptera, 43, 221 



characteristics, 212 



development, 213 



feeding habits, 213 



relationships, 212 



value of the order, 215 



