INDEX. 
Epicranial suture, 117 
Epifrontal sclerite, 115 
Epifurca, 143 
Epilecithal, 245 
Epimeron, 182, 186 
Epiostracoid layer, 280 
Epiostracum, 10, 35, 280 
Epiphallus, 741 
Epipharynx, 137 
of larva, 46 
Epipleuron, 160 
Epipygium, 210, 744 
Episternum, 182 
of metathorax, 186 
Epistome or Epistomum, 115, 121 
Epithelia, 277 
Epithelium of crop in imago, 407 
Epitrochlear plate, 169 
Epitrochlear sclerite, 174 
Eremocheeta, 11 
Erichson on function of antennz, 589 
on labium, 131 
Eristalis, dorsal vessel of, 284, 649 
humming sound of, 628 
trachez of retina in, 538 
vibration of wings in, 628 
Escape from pupa case, 216 
Eucephalic larvae, 28 
Evagination of head and thorax, 317 
Evanescent sclerites, 105 
Exner on compound eye, 559, 561, 
577, 579, 664. 
Exogenous cell division, 696 
Exosclerites, 105 
Exoskeleton, 99, 211 
of abdomen, 209 
of legs, 190 
Expiratory pressure, 378, 379 
Extension of wing, 202 
External generative organs, 724 
comparative morphology of, 732 
development of, 730 
of female, 745 
of male, 736 
Exuvia, artificial, 212 
Eye, a physiological term, 501 
cephalic, 504 
epiblastic, 506 
median, 504 
pineal, 504, 505 
sporadic, 505 
See Compound eye and Ocellus 
Eye-like organs of larva, 71 
nerve to, 82 
757 
FABRICIUS, rostellum of, 139 
Fabre on hyper-metamorphosis, 18 
Face, 121 
Faivre on nervous system, 476, 477 
Faltenblatt, 244 
Fan-shaped body, 459 
Fat bodies, 274 
development of, 236, 253, 274 
histolysis of, 307 
Fat-cells of imago, 275 
of larva, 85, 274 
Fat, relation of, to proteids, 309 
Femoro-tibial rudiment, 159 
Femur, 192 
Fenestra of coxa, 191 
Ferment theory of histolysis, 311 
Ferments of Malpighian secretion, 
416 
Fillet of nodulus, 456 
Films, action of gases on, 382 
Fixation of tissues, 94, 349 
Flea. See Pulex 
Flight, 206, 385, 387 
air expired in, 383 
mathematical theory of, 387 
movement of wings in, 203 
rapidity of, 386 
work of, 385 
Flogel on the brains of Insects, 440 
Food-yelk, 13, 708 
Foot of fly, 194 
bibliography of, 190 
mechanism of, 197 
Fore-gut, 13. See Stomodeum 
Fore-head, 120 
invagination of, in embryo, 261 
Forel on aeria and antennal Insects, 
II 
on function of antennz, 592 
Forficula, cornea of, 526 
epicranial suture of, 117 
larva of, 18 
moults of, 18 
skeleton of head in, 117 
Formicidae, eyes in, 516 
proventriculus of, 409 
Free formation of nuclei, 711, 716 
Frons, 121 
Frontal sac, 4, 124, 216 
morphology of, 115 
relation to proboscis, 397 
Fulcrum, 44, 137 
morphology of, 138 
muscles of, 392 
