INDEX 



341 



ttl 



Defence, devices for, 162 



Dermaptcra, 61 



Dermestidfr, 79 



Devil's coach-horse beetle, 78, 150, 104 



De Vries, 154 



Dianthcecia, 236 



Dibrachys, 331 



Digestive system, 4, 6 



Digger wasps, 99, 123, 138, 169, 207, 208, 

 278 



Dimorphism, 138, 142 



Diplopoda, 32 



Diptera, 53, 57, 59, 92, 317 



Dipthera, 155 



Disease disseminated by insects, 323 



Dismorphia, 153, 155 



Distribution of insects, S, 9, 10. See 

 also under particular Orders and Sub- 

 orders 



Donacia, 316 



Doryphora. 82 

 ;*- Dragon-flies, 22, 27, 52, 50, 103, 115, 173, 

 314, 317 



Drepanvlidce, 88 



Drummoud, Prof., quoted, 131, 306 



Dynastes, 80 



Dytiscidcv, 78, 311 



"Ear" of grasshoppers and crickets, 



64, 65, 104~ 

 Ears of insects, 104 

 Earwigs, 61, 190, 262 

 Eciton, 183 



Edwardes, Mr. Tickner, quoted, 126 

 Egg-laying by insects, 14, 262 tt seq. 

 Eggs, 13,20 

 — vitality of, 171 

 Elaterida?, 80, 166 

 " Electric light" bugs, 176 

 Elytra, 46, 77 

 Embvidce, 66 

 Emus, 150 



"End-organs" of insects, 105 

 Enock, Mr. F., 318 

 Environment, influence on protective 



coloration, 137, 139 et seq. 

 Ephtmeridce, 68 

 Ephemeroptera, 08, 317 

 Ephestia, 87 

 Erastria, 190 

 Ericerut pe-la, 333 

 Eristalis, 150, 313 

 Eruciform larvae, 26 

 Escherich, Prof. K., quoted, 303 

 Euchelia, 144 

 Euchloe, 136, 256 

 Eumcnincr., 99, 269 

 Eupterotidcv, 90 

 Eyes of insects, 3, 103 



Fabre, J. H., quoted, 123, 1S9, 195, 203, 



204, 208, 272, 279 

 "Fairy-flies," 318 

 Families of insects, 40 

 Fecundity, 171, 172 

 Feeding habits of insects, 7, 8. See alto 



Food 



— of larvae, 15 



— larval form determined by, 27 

 Feigning of death by insects, 105 

 Felted beech coccug, 73, 108 

 Femur of insects, 54 



Fertilisation of plants by insects, 215, 



218 et seq., 2i2, 330 

 Fig, cross pollination by gall-wasps, 238 

 Fig insects, 98 



Figwort, fertilisation by wasps, 230 

 '« Fire-brat," 60 

 Fireflies, 80, 253 



" Fish insects," 60. See also Silver- fish 

 Fishes, freshwater, as enemies of insects, 



245, 246 

 Fitch, Dr., on robber flies, 185 

 Plata, 72, 138 

 Fleas, 95, 188 



— water, 33 



Flies, aquatic stages of, 317 



— bee, 150 



— blow, 94, 106 



— drone, 150, 313 



— flesh, 27, 94, 172 



— flight of, 52 



— forest, 187 



— frit, 320 



— " golden-eye," 76, 178 



— gout, 320 



— groups and families of, 94, 95 



— horse, 187 



— house, 44, 94, 103, 188, 250, 329 



— ichneumon, 96, 98. 163, 185, 204, 318 



— inimicry of stinging insects by, 149 



— mouth-parts of, 44 



— nervous system, 102 



— snake, 25, 75, 179 



— stone, 65, 315, 317 



— swarms of, 275 



— true, 92 



Flight of insects, 6, 48 



— regulation of, 52 

 Flower-eating insects, 197 

 Flower-mimicking insects, 174, 175 

 Flowers, adjustment for particular 



insects, 225 et seq. 



— egg-laying by insects upon, 236 



— fertilisation by insects, 215, 218. 242, 

 330 



— relation of insects to, 214 et seq. 



— structure of, 216 

 Folsom, Prof. J. W., 235 



