GENERAL INDEX 



427 



cold hardiness, 222-7 



Coleoptera ; trochanters, 25 ; gula, 38 ; 



genitalia, 47 ; fossil forms, 93 ; 



coloration, 179, 181 ; parasitic forms, 



335, 336 

 Colias, larval colour, 186, 196 

 Collembola, 11, 28, 230 ; fossil forms, 86 

 Colorado potato beetle, see Leptinotarsa, 



159 

 coloration, 172 ; literature on, 203 

 colours, structural, 172 ; pigmentary, 



183 ; combination colours, 194 

 colour vision, 113 

 compound eyes, 107 

 Compsilura, 319, 341, 342 

 continental areas, biological control in, 



395 

 Copidosoma, 356, 362 

 Coroebus, 419 

 corpora allata, 65 

 cotton boll weevil, 139, 207 

 cotton Jassid, 284 

 coxites, 41, 45, 46 

 coxosternum, 41 

 Cretaceous insects, 92 

 crops and insect attacks, 263 

 Cryptocercus, 247 

 Cryptochoetum, 342, 353, 371 

 Cryptognatha, 388 

 Culex, races of, 291 

 cyclopoid larva, 57, 58 

 Cydia molesta, 156, 381, 383 

 Cydia pomonella, 140, 156. See also 



codling moth. 

 Cyrtidse, 335 

 Cyrtorhinus, 372 



Dachnusa, 326 

 Dactylopius, 416 

 Dacus, 162 

 Datana, 150 

 Dendroctonus, 287 

 developmental units, 216 

 Devonian insects, 86 

 Dexia, 335 



Diaclmsma, 322, 374, 397 

 Diceretus, 360 

 Diatrcea, 406 

 Dibrachys, 328, 399 

 Dieconeura, 76 

 diffraction colours, 174 

 Digonochceta, 399 

 Dinocampus, 341, 343 



Diptera, 21 ; genitalia, 47 ; larvae, 60 ; 

 fossil forms, 91, 94 ; chemotropic 

 responses, 160, 161 ; parasitism in, 

 351 



Dissosteira, 13 



Ditaxineura, 96 



Dociostaurus, 309 



" dopa," 191 



double ocelli, 110 



dragon-flies, see Odonata. 



Drosophila, response to light. 111 ; 

 chemotropism, 160 ; development, 

 215 ; duration of life, 217 ; COg out- 

 put, 219; effects of light, 235; 

 nutrition, 243 



Dunbaria, 89 



Dytiscus, 25 



ectoparasites, 320, 339 



embryonic phases, 52 



Empire Cotton Growing Corporation, 



284 

 Encarsia, 389, 410 

 EncyHus, 349, 350, 355 

 England, biological control in, 389, 394, 



399 

 Entinms, coloration,' 178, 179 

 Eosentomon, 28, 42 



Ephemeroptera, 15, 20 ; fossil forms, 97 

 Ephestia, 244, 290 

 Ephialtites, 91 

 Eriosoma, 410 

 Ernestia, 336 . 

 Euclecanium, 387 

 Eugereon, 82 

 Eulecanium, 294 

 Euplectrus, 321 

 Euproctis, 324 

 European corn borer, see Pyrausta. 



Figites, polypod larva, 58 



Figitidffi, 58 



Fiji, biological control in, 387, 418 



flavones, 188 



fluorescence, 203 



food plants, change of habits with 



respect to, 294 

 Forficula, 7, 399 

 fossil insects, 72 ; sequence of, 86, 101 



literature on, 102 

 frit-fly, see Oscinella. 



