402 



ZOOLOGY 



Fireflies, 51-52, 58, 60. 



Fishes, 230. 



Fissurella, 170. 



Fissurellidte, 177. 



Flagellata, 225, 229. 



Flatfishes, 239-240, 253. 



Flatworms, 153. 



Fleas, 61, 70. 



Flicker, 301. 



Flies, 61 ; degenerate, 70 ; development 

 of, 62; food of, 62; plant-infesting, 

 72 ; mimicry in, 65 ; parasites of, 63 ; 

 parasitic, 70 ; trachea of, 63. 



Flight of birds, 310-311. 



Flycatchers, 295. 



Food of, beetles, 56; butterflies, 16; 

 crayfish, 98; earthworm, 134; fly, 

 62; hydra, 207; mouse, 319; English 

 sparrow, 282; starfish, 193; whale, 

 325. 



Forficulidffi, 9. 



Formicidse, 34-35, 43. 



Fossil, birds, 314; lizards, 272; man, 

 331. 



Fossoria, 34, 43. 



Fowls, origin of, 305. 



Fox-sparrow, 285. 



Fresh-water clam, 178. 



Fresh-water Cuidaria, 207. 



Fresh- water jelly-fishes, 208. 



Fringillidae, 284, 317. 



Fringing reefs, 217. 



Fritillaries, 22. 



Frog, development of, 333; postem- 

 bryonic development of, 334. 



Frog's egg, development of, 332 ; heal- 

 ing of, 334; regeneration of, 334; 

 size of, 332. 



Fulgur, 168, 169, 175. 



Fundulus, 242. 



G 



Gadus, 239. 

 Ganoidei, 247-252. 

 Ganoids, 252. 

 Garpike, 248. 

 Garter snake, 27(5. 

 Gasterosteus, 237-238. 

 Gastropoda, 160, 161. 



Gall-gnats, 66, 72. 



Gall-flies, 31. 



Gall-producing Hymenoptera, 43. 



Gall- wasps, 31, 38-39. 



Galls on plants, 67. 



Galley-worm, 76. 



Gallinacei, 304, 314. 



Gallns, 305. 



Gebia, 105. 



Geese, 306. 



Gelasimns, 110-111. 



Genera, discontinuous, 99-100. 



General laws of development, 335. 



Geometridse, 28, 42. 



Geomys, 320. 



Geophilus, 76. 



Geothlypis, 289. 



Gephyrea, 138-139, 141. 



Germ theory of Infusoria, 223. 



Gibbous, 330. 



Gila monster, 270-271. 



Giraffes, 326. 



Glossina, 65. 



Glow-worm, 271. 



Glyceridse, 159. 



Gnats, 61. 



Goat-suckers, 301, 303. 



Golden-crowned kinglet, 287. 



Gopher, 320. 



Gorilla, 330. 



Grallatores, 305, 314. 



Grapta, 21. 



Grasshopper, 1-4 ; development of, 



3-4. 



Grass spiders, 90. 

 Gray-veined white, 18. 

 Great horned owl , 299. 

 Great northern shrike, 290. 

 Green frog, 266. 

 Grillidae, 4-5, 15. 

 Grillus, 5. 



Ground-beetles, 45-46. 

 Grouse, 304. 

 Gryllotalpa, 5. 

 Guinea fowl, 304. 

 Gulls, 306. 



Gymnophioua, 255, 266, 389. 

 Gypsy moth, 28. 

 Gyrinidse, 46, 60. 



