INDEX 



485 



Drone, *282 

 Drosera, 216 

 Drosophila, chemotropism of, 303; egg, 



*i39; food, 373, 376; humidity on, 365; 



melanism, 180; phototropism, 310, 311 

 Drought, 366 

 Dubois, 448 



Ductus ejaculatorius, *i24 

 Dufour, 449, 455 

 Durham, 464 

 Diirken, 438 

 Dyar, on molts, 145 

 Dynastes hercules, 27; tityus, distribution of, 



337 



Dysentery, 268 

 Dytiscidae, 166, 167 

 Dytiscus, caecum of, 105; leg of, *5o; pre- 



daceous, 233; respiration, 169 

 Dzierzon's theory, 286 



Ecdysis, 140, 144 



Eciton, *295; eyes of, 31 ; habits, 233, 290, 293 



Eckstein, 462 



Eclosion, 152 



Ecology, 348 



Economic entomologist, 420 



Ectoderm, 130, *i3i 



Edwards, on /. ajax, 182; on P. tharos, 182 



Effective temperatures, 355 



Egg-guide, *67 



Egg-nucleus, *i29 



Eggs, form of, *i39; number, 141; size, 140 



Eimer, 468 



Ejaculatory duct, *i24 



Elaphrus, stridulation of, 91 



Electricity, 368 



Eleodinae, 372 



Ellemti, protective resemblance of, 196 ' 



Elm, insects of, 212 



Elm leaf beetle (see Galerucella). 



Eltringham, 446, 461 



Elwes, 471 



Elwyn, 365, 475 



Ely, 476 



Elytra, 5-3 



Em-bia, 12 



Embioptera, n 



Embryology, 129 



Emery, 448, 467 



Emesa, 322 



Em pis, nervous system of, *82 



Empodium, 48 



Empusa, *2i8 



Enderlein, 433 



Endoskeleton, 46, *48 



Engelmann, 430 



Enteman, 289, 321, 459, 467, 469 



Entoderm, 130, 135, *i36 



Entomophagous, 373 



Entomophthoraceae, 217, *2i8 



Environment, 387, 389 



Ephemerida, *i3, 14; abdominal segments 



of, 60; eyes, 31; origin, 23 

 Ephydra, 383, 414 



Epicauta, hypermetamorphosis of , 156, *i57 

 Epicrahium, 28 

 Epigamic colors, 211 

 Epimeron, *45, *47 

 Epipharynx, 35 

 Epi sternum, *45, *47 

 Epitheca, dorsal vessel of, *no 

 Equilibrium, 382 



Erebus agrippina, 27; odora, 323, 337 

 Ergatoid, 290 



Eriocephala, mouth parts of, 40 

 Eristalis, mimicry by, *2O2; respiration, 169 

 Eruciform larvae, 24, *i43, 160 

 Erynnis manitoba, distribution of, *332 

 Escherich, 439, 451 



Essig, 425 



Ethiopian realm, 331 



Etiolin, 193 



Etoblattina, 343 



Eucone, 98 



Eudamus proteus, distribution of, *332 



Eugereon, *344 



Euphoria, mouth parts of, 36, *22j. 



Euplexoptera (see Dermaptera). 



Euplcea, colors of, 175 



Euproctis chrysorrhcea, phototropism of, 

 309; spread, 417; winter-killing of, 362 



European corn borer (see Pyrausta). 



Euschistus, antenna of, *32 



Enter mes, 281 



Euthrips, *i4 



Evaporation, 369; adaptations to, 372; on 

 eclosion, 372; gradients, 371; on hatch- 

 ing, 371; on life cycle, 371; on metabo- 

 lism, 369; reactions to, 370 



Everes, androconium of, *7i 



Ewing, 4, 359, 435 



Excrements, 105 



Exner, on compound eyes, 98, 444, 468 



Expiration, 123 



