INDEX 
Cyaniris pseudargiolus, coloration of, 
199; geographical varieties, 373; 
melanism, 201 ; polymorphism,* 202 ; 
sexual coloration, 206 
Cybister, leg of, *187; 
186, 188 
Cychrus, stridulation of, 104 
Cyllene, metamorphosis of, *156 
Cynipide, abdomen of, 66; galls, *254; 
parthenogenesis, 145, 256 
Cyrtophyllus, stridulation of, 106 
locomotion, 
Dahl, 417, 422, 424 
Dallinger, on acclimatization, 242 
Darkness, as affecting pigmentation, 
197 
Darts, *70 
Darwin, on instinct, 361; natural se- 
lection, 238; origin of species, 245 ; 
451, 453, 461 
Davenport, on phototaxis, 351; 459 
Davis, 419 
Dearborn, on insectivorous birds, 287, 
289, 2901, 456 
Deegener, 444 
Delage, 452 
Demoor, 417 
Denny, on chitin, 74; on muscles, 87; 
410, 414, 424 
Dermaptera, 11 
Dermestide, 280 
Deutocerebrum, 90, 152 
Deutoplasm, *146 
Development, 146 
Devonian insects, 384, 385 
Dewitz, 417, 418, 419, 432, 435, 436, 
443, 445 
Diabrotica, distribution of, 380 
Diacrisia, cocoon of, 170 
Diapheromera, *217 
Diastole, 128 
Dibrachys, 312 
Dichoptic, *33 
Dickel, on control of sex, 327; on fer- 
tilization, 145; 458 
Dictyoneura, 387 
Dietl, 424 
Digestive system, 116; of beetle, *117; 
Belostoma, *120; Collembola, *115; 
grasshopper, *116; histology, *121; 
moth, *119; Myrmeleon, *118 
Digoneutic, 204 
Dimmock, on assembling, 
mouth parts of mosquito, 
415, 422, 446, 455 
Dimorphism, 202 
-Dinarda, 342 
103; on 
Hgas Pay hele 
471 
Dineutus, antenna of, *34; eyes of, 
* 37 
Diplopoda, *3 
Diptera, 19, *20; eyes of, *32; hal- 
teres, 116; smouth parts, 42, *43; 
origin, 24; sounds, 103; spiracles, 
66 
Directing tube, 85 
Direct metamorphosis, 157 
Diseases, their transmission by in- 
sects, 299 
Dispersal, 366 ; centers of, 383 ; means 
of, 367; in North America, 377 
Dissosteira, protective resemblance of, 
219; stridulation, 104 
Distant, 462 
Distribution, former highways of, 
370; geographical, 366; geological, 
384 
Dixey, on evolution of mimicry, 233; 
447, 448, 450, 451 
Dogiel, 431 
Dohrn, 439 
Dolbear, on stridulation, 106 
Dolichopodide, 54 
Donacia, 88, 184, 189 
Dorfmeister, 446 
Dorsal closure, 151, *154 
Dorsal vessel, 124, *125 
Doyére, 436 
Drift, insect, I91 
Drone; +321, 322 
Drosera, 256 
Drosophila, egg of, *1509 
Dubois, 433 
Ductus ejaculatorius, *140, 141, 142 
Dufour, 421, 429, 432, 433, 434, 436, 
445 
Durham, 456 
Dutrochet, 433, 436 
Dyar, on moults, 165 
Dynastes hercules, 27; tityus, distri- 
bution of, 380 
Dytiscus, cecum of, 120; leg of, *53; 
predaceous, 276; respiration, 189 
Ecdysis, 159, 164 
Eciton, *338; eyes of, 32; habits, 276, 
331, 335 
Eckstein, 454 
Eclosion, 172 
Economic entomologist, 398 
Ectoderm, *148 
Edwards, on J. ajax, 203; on P. tharos, 
204; 421 
Egg-guide, *73 
Egg-nucleus, *146 
