INDEX 



475 



Hydrous, tergites of, *48 



Hylastes, 381 



Hylobius, glandular hairs of, *8o 



Hymenoptera, defined, 19 ; cephalic 

 glands, 122; eyes of sexes, *33 ; in- 

 ternal metamorphosis, 182 ; mouth 

 parts, *44 ; ocelli, 32 ; origin, 24 ; 

 sounds, 103 ; wing, *6i 



Hypermetamorphosis, 174 



Hyperparasitism, 311, 312 



Hyphas, 259 



Hyphantria, 298 



Hypoderma, larva of, *i62; lineata, 

 habits of, 278 ; losses through, 394 



Hypodermal colors, 194 



Hypodermis, *74, 75, *76, *79 



Hypognathous, 1 1 



Hypopharynx, *37, 39, *43 



Icerya, 406 



Ichneumonidae, 310 



Ihering, von, 419 



Ileum, *i2o 



Imaginal buds, *i79, *i8o 



Imago, 156 



Incomplete metamorphosis, 157 



Indirect metamorphosis, *is6 



Ingenitzky, 438 



Inheritance of acquired characters, 243 



Injuries, transmission of, 241 



Injurious insects, 393 ; introduction 



of, 397 



Ino, antennal sensilla of, *95 

 Inquilines, 256, 320 

 Insecta, defined, 4 

 Insectivorous birds, 284 ; fishes, 281 ; 



plants, 256 ; vertebrates, 280 

 Inspiration, 139 

 Instar, 159 

 Instinct, 356 ; apparent rationality of, 



357; basis of, 357; flexibility, 360; 



inflexibility, 359 ; modifications, 358 ; 



origin, 361 ; stimuli, 357 ; and tro- 



pisms, 361 

 Integument, 73 

 Intelligence, 362 

 Interactions of organisms, 292 

 Intercalary, appendages, *iso; neuro- 



mere, *46 ; segment, 45 

 Interglacial beetles, 391 

 Interrelations, of insects, 307 ; of 



orders, 21 



Intima. *8s, *i2i, *i37 

 Iphiclides ajax, polymorphism of, 202 

 Iridescence, 193 

 Iris pigment, *io9, *ui 

 Iris versicolor, *26o, *26i 

 Irritants, 298 



Is aria, 258 



Ischnoptera, mouth parts of, *37 



Isia, cocoon of, 170; hairs, 76, 167; 



moults, 165 

 Island faunae, 371 

 Isolation, 249, 374 

 Isoptera, n 

 Isosoma, 311 

 Isotropic, 87 

 Ithomiinse, mimicry, 225, 226 



Jacobi, 463 



James, W., 459 



Janet, on Lepismina, *344 ; muscles, 

 86, *87 ; 416, 420, 421, 424, 458 



Japyx, 9, 22 ; spiracles of, 66 



Jaworovski, 431 



Jennings, 460 



Judd, on food of bluebird, 287 ; mim- 

 icry, 232 ; protective adaptations, 

 297 ; protective resemblance, 221 ; 

 warning coloration, 222; 451, 456 



Jurassic insects, 385, 389 



Kallirna, protective resemblance of, 

 216 



Kanthack, 456 



Karsten, 421 



Kathariner, 460 



Katydid, stridulation of, 106 



Kellogg, on Mallophaga, 277 ; mouth 

 parts, 42; phototropism, 354; pili- 

 fers, *42 ; scales, 78, 193 ; swarm- 

 ing, 327; 410, 414, 416, 417, 422. 

 448, 453, 460 



Kenyon, 412, 425 



Kidney tubes, 123, *i24 



Kingsley, on Arthropoda, 7, 411, 412 



Kirby, 410, 411 



Kirkland, 456 



Klemensiewicz, 422 



Kluge, 438 



Kniippel, 430 



Koch, on malaria, 302 



Kochi, 416 



Koestler, 425 



Kolbe, 410 



Kolliker, 424, 437 



Korotneff, 440 



Korschelt, 438, 441, 444 



Koschewnikoff, 438 



Kowalevsky, 430, 432, 439, 443 



Kraatz, 419 



Kraepelin, 415, 418 



Krancher, 435 



Krause's membrane, *87, 88 



Krukenberg, on chitin, 74 ; 429, 447 



Kulagin, 42, 416, 442, 444 



