522 



INDEX 



Ectobia germanica, *$w 

 Eels, 249 

 Eel- worms, 80 

 Egg, fertilization, 46 

 Elaphidion villas um, 513 

 Elaps fttlvius, 270 

 Elasmobranchii, 245 

 Electric-rays, 247 

 Elephant-fishes, 247 

 Elephantiasis, 84 

 Elk, 303 

 Elm, aphis, *5i2 



leaf-beetles, 511 

 Embiotocidae, 253 

 Embryology, 45 

 Embryonic development, 45 

 Emulsion, kerosene, 416 



distillate oil, 416 



carbolic acid, 417 

 Endentata, 300 

 Engraulidae, 250 

 Entero-hepatitis, 351 

 Entomostraca, 113 

 Eohippus, 325 

 Ephemeridae, 156 

 Ephestia kuehnietta, 497 

 Epitrix sp. 477 



E. parvida, 501 

 Epochra canadensis, 470, *47i 

 Equus, 326 



E. caballus fossilis, 325 



E. onager, 327 



E. przewalski, 325 



E. tceniopus, 327 

 Erethizon dorsatus, 308 



E. epixanthus, 308 

 Erethizontidae, 306 

 Eriophyes, 213 



E. pyri, 434 

 Ermine, 314 

 Esocidae, 252 

 Euglena, 34 

 Eulachon, 252 

 Eumetopias stelleri, 318 

 Euplexoptera, 164 

 Euproctis chrysorrhcea, *5O9 

 European fruit-Lecanium, 448 

 Eutettix tenetta, 483 

 Euthrips pyri, 433 

 Evolution, 335 



factors, 336 



proof, 344 



Eyes, compound, 130 

 facets, *i32 



longitudinal section, *i3i 

 simple, 132 



Fasciola hepalica, 70, *7i 



F. magna, 72 

 Families, defined, 52 

 Feather-stars, 97 

 Felidae, 312 

 Felis concolor, 313 



F . maniculata, 325 



F. pardalis, 313 



F. onca, 313 

 Feridae, 312 

 Fertilization of egg, 46 

 Fiber zibethictis, 309 

 Fidia mticida, 465 

 Field and forage crops, insects 



affecting, 489 

 Fig- wasp, 181 

 Filaria bancrofti, 84 



F. loa, 86 



F. medinensis, 86 

 Filaria in mosquito, *384 

 Fish culture, 242 

 Fishes, 239, 247 



epidemics among, 365 

 Flat-worms, 69 



classification, 77 

 Flea-beetles, 477 

 Flea, 172 



cat and dog, 173, 376 



human, *i73, *376 



plague, 375, 376 



rat, 376 

 Flesh-flies, 388 

 Flies, two- winged, 170 

 Flounder, 253, *254 

 Foraminifera, 33 

 Forest and shade trees, insects 



affecting, 506 

 Foxes, 313 

 Fringe- wings, 166 

 Fringilla canariensis , 333 

 Fringillidae, 285 

 Frog, *4, 257 



external structure, 5 



internal structure, 6 



life-history and habits, 12 



skeleton, *n 



