526 



INDEX 



Ferrets, 399. 



Fertilization, first observed, 507. 



Fetus, of rat, 367. 



Fibula, of fowl, 331 ; of gorilla, 359. 



Field mouse, 389. 



/•'//aria, 122. 



Filariasis, transmission of, 216. 



Finches 355. 



Fin-rays, of trout, 288. 



Fins, of Amphibia, 299; of Cetacea, 373; 



of fishes, 274. 

 Firebacks, 350. 

 Fire flies, 220. 

 Fire worms, 214. 

 Fishhavvk, 346. 



Fishes, 274, 432, 447, 450, 451. 

 Fish moths, 197, 227. 

 Fish tapeworm, 113, 115. 

 Fissipedia, 398. 

 Fixity of species, 462. 

 Flagellata, 37. 



Flagellula, of Mvcetozoa, 14. 

 Flagellum, definition of, 37. 

 Flamingoes, 342. 

 Flapper, 166. 

 Flat fishes, 293. 



is, 217, 218, 227. 

 Flies, 215, 227. 



Flippers, of Cetacea, 373 ; of turtles, 322. 

 Flora, 444. 

 / ,/tIana, 127. 

 Flounder, 293. 

 Flukes, of Cetacea, 373. 

 Flukeworms, 109. 

 Fluviatile fauna, 451. 

 Flycatchers, 355. 

 Flying dragons, 314. 

 Flying foxes, 396. 

 Flying geckos, 314. 

 Flying lizards, 314. 

 Flying reptiles, 310, 311. 

 1- 1} ing squirrels, 388, 389. 

 Foetal membranes, of Mammalia, 309. 



tanelles, of frog, 300. 

 Foraminifera, 23. 

 Forktails, 355. 

 Formica 1 11 fi, 224. 



, definition of, 12; formation of, 12. 

 Fossiliferous rocks, 418. 



il jellyfishes, 417. 

 Fossils, 417; nlative occurrence of, 443; 



types of structure, 442. 

 Fowl, skeleton of, 331. 



S, 400, 401, 453. 

 Fox squirrels, 389. 

 rolv< :s, joi. 



h-water dolphins, 373. 

 Fresh-water fauna, 451. 

 Fresh-water fishes, 453. 



Fresh-water mussel, 243, 248. 

 Fresh-water nekton, 451. 

 Fresh-water plankton, 451. 

 Fresh-water turtles, 323. 

 Frigate birds, 342. 

 ed lizard, 314. 

 Frogfish, 297. 

 Progs, 306. 

 Frog spittle, 209. 

 Frondicularia, 26. 

 Frontal, of fowl, 331 ; of trout, 288. 

 Fronto-parietal, of frog, 300. 

 Fulcra, 284. 



Fulgur carua, 236; egg capsules of, 237. 

 Fit lie a atra, 327. 

 Funiculus, 130. 

 Funnel, of Cephalopoda, 251; of nautilus, 



254 ; of Octopus, 258. 

 Furcula, 332. 

 Fur seals, 405. 



Gadits morrhua, 292. 



Galago, 393. 



Galenus, 496. 



Galeopitkecus volans, 393, 394, 407. 



Gall bladder, of trout, 288. 



Galleodes dastugnei, 180. 



) w >i ms, 191. 

 Gall flies, 216. 

 rise, 349. 

 Galls, 222. 



Gal/us bankiva, skeleton of, 331. 

 Gall wasps, 222, 223. 

 Gammarus neglectus, 162. 

 Gannets, 342. 

 Ganoidei, 283,420, 451. 

 < ianoid scales, 285. 

 (\\\x pikes, 285. 

 Garter snakes, 318. 

 Gasterosteus pungitius, nest of, 294, 

 Gastric filaments, 78. 

 Gastropoda, 231,451. 

 Gastropores, 67. 

 Gastntla, 473 ; of sponge, 59. 

 Gavise, 350. 



^cticus, 325. 

 Gavials, 325. 

 Gazelle, 384. 

 Geckos, 313, 314. 

 Geese, 342. 



: si 111 us, 171. 

 Gemmulae, 56, 57. 

 Gemmules, Darwin's theory of, 477. 

 Genealogical tree, 413, 471. 

 t ienealogy ot horse, 433. 

 (leneric image, 489. 

 Genital plates, 97. 

 Genital ridges, 263. 

 Genus, 9. 



