INDEX 



471 



Cyaniris pseudargiolus, coloration of, 



J 99 > geographical varieties, 373 ; 



melanism, 201 ; polymorphism,* 202 ; 



sexual coloration, 206 

 Cybister, leg of, *i87; locomotion, 



1 86, 1 88 



Cychrus, stridulation of, 104 

 Cyllene, metamorphosis of, *is6 

 Cynipidse, abdomen of, 66 ; galls, *254 ; 



parthenogenesis, 145, 256 

 Cyrtophyllus, stridulation of, 106 



Dahl, 417, 422, 424 



Dallinger, on acclimatization, 242 



Darkness, as affecting pigmentation, 

 197 



Darts, *7o 



Darwin, on instinct, 361 ; natural se- 

 lection, 238 ; origin of species, 245 ; 

 45i, 453, 461 



Davenport, on phototaxis, 351 ; 459 



Davis, 419 



Dearborn, on insectivorous birds, 287, 

 289, 291, 456 



Deegener, 444 



Delage, 452 



Demoor, 417 



Denny, on chitin, 74 ; on muscles, 87 ; 

 410, 414, 424 



Dermaptera, 1 1 



Dermestidse, 280 



Deutocerebrum, 90, 152 



Deutoplasm, *i46 



Development, 146 



Devonian insects, 384, 385 



Dewitz, 417, 418, 419, 432, 435, 436, 

 443, 445 



Diabrotica, distribution of, 380 



Diacrisia, cocoon of, 170 



Diapheromera, *2i7 



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, *n/ ; 

 Belostoma, *i2o; Collembola, *ns; 

 grasshopper, *n6; histology, *i2i ; 

 moth, *ii9; Myrmeleon, *n8 



Digoneutic, 204 



Dimmock, on assembling, 103; on 

 mouth parts of mosquito, 42, *43 ; 

 415, 422, 446, 455 



Dimorphism, 202 



Dinarda, 342 



Dineutus, antenna of, *34 ; eyes of, 



*3i 



Diplopoda, *3 

 Diptera, 19, *2o ; eyes of, *32 ; hal- 



teres, 116; mouth 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 

 Dolichopodidse, 54 

 Donacia, 88, 184, 189 

 Dorfmeister, 446 

 Dorsal closure, 151, *i54 

 Dorsal vessel, 124, *i25 

 Doyefe, 436 



Drift, insect, 191 



Drone, *32i, 322 



Drosera, 256 



Drosophila, egg of, *i59 



Dubois, 433 



Ductus ejaculatorius, *i4o, 141, 142 



Dufour, 421, 429, 432, 433, 434, 436, 

 445 



Durham, 456 



Dutrochet, 433, 436 



Dyar, on mouks, 165 



Dynastes hercules, 27 ; tityus, distri- 

 bution of, 380 



Dytiscus, caecum of, 120; leg of, *53 ; 

 predaceous, 276 ; respiration, 189 



Ecdysis, 159, 164 



Eciton, *33*8 ; eyes of, 32 ; habits, 276, 



33i, 335 

 Eckstein, 454 

 Eclosion, 172 



Economic entomologist, 398 

 Ectoderm, *i48 

 Edwards, on /. ajax, 203 ; on P. tharos, 



204; 421 

 Egg-guide, *73 

 Egg-nucleus, *i46 



