INDEX 



423 



Evolution of foot from fin, 176 * 

 Evolutionary advances of reptiles, 211- 



212 



Exonautes gilberti, 145 * 

 External gills, 106 *, 107, 108, 185 *, 207 

 Eyes, of Amphioxus, 38; of myxinoids, 



90; of lampreys, 92; of fishes, 101; 



of bird, 271 



Falcinellus, beak of, 282 * 



Falco, foot of, 280 *; beak of, 282 * 



Falconiformes, 289, 297, 298 



Falcons, 298 



Faserstrang, 77 



Fierasfer, 111, 142; F. acus, 142 * 



.Feathers, of pigeon, 261; 266 *, 267 



Feet, of Birds 280 *; of mammals, 337 



Felidse, 366 



Felis canadensis, 367 *; F. caffra, 366 



File-fishes, 112 



Finfoot, 301 



Fins, of fishes, 100, 102-105 



Fishes, coloration of, 110; integument 

 of, 109, 110; life zones of, 97; types 

 of body form, 97, 98, 99 *; structural 

 features of, 100-102; fins of, 102-105; 

 respiratory organs of, 106-109; swim- 

 bladder of, 108, 109; classification of, 

 110-112 



Fissipedia, 364-368 



Flamingoes, 295, 296 



Flat-fishes, 147 



Flounders, 111, 146, 147 * 



Flower and Lydekker, 376 



Flying dragon, 248 *, 249, 250 



Flying-fishes, 145 *, 150 



Flying frog, 203 



Flying gurnards, 150 



Food concentrating mechanism, of 

 Amphioxus, 36, 37; of tunicates, 50, 

 51* 



Fool-fishes, 151 



Fossa, 366 



Four-wing theory of origin of flight, 

 273-275 



Frigate birds, 295 



Frilled shark, 122 * 



Frog, bull, 200 *, 203; leopard, 200; * 

 Javan flying, 200 *, 203; European 

 brown, 203; cricket, 201 



Fuertes, L. A., figures after, 367*, 

 369 *, 391, 398 



Fulica, foot of, 280 * 

 Fundulus heteroclitus, 142*, 160, 161, 

 166 



Gadow, H., 183, 184, 225, 226, 232, 253> 

 254, 256 



Gadus morrhua, 146 * 



Galeopithecus volans, 362 *, 363 



Gall bladder, of Ammoccetes, 95, 96; of 

 Squalus, 116 



Galli, 299, 300 



Galliformes, 289, 299, 300 



Gallus gallus, 300 



Gambusia, 166 



Gannets, 295 



Ganoid scales, 109, 110 



Ganoin, 110 



Gar-pike, 111, 133 



Garrod and Forbes, 309 



Gaskell, 80 



Gasterosteus aculeatus, 144 * 



Gastrostomus bairdii, 136 * 



Gastrula, of Amphioxus, 42, 43 *; of 

 teleost, 167*, 168; of frog, 205, 

 206 *; in the bird, 317 



Gavialidse, 244-245 



Gavialis gangeticus, 244, 245 * 



Geckones, 247 



Geckos, 247; wall gecko, 248 * 



Geese, 297, 295 * 



Generalized types of vertebrates, 12, 

 13; of fishes, 159-160; of birds, 312 



Geologic time, main divisions of (chart), 

 29*; scale, 26* 



Gephyrocercal caudal fin, 131 



Giant land tortoises, 239, 240 * 



Giant size, a criterion of racial senes- 

 cence, 20, 21 



Giantism, possible causes of, 22 



Gibbon, 378 *, 382 



Gila monster, 250*, 252 



Gill, T. N., 141 



Giraffa camelopardus, 391 * 



Giraffe, 390, 391 * 



Glandiceps hacksi, 62 * 



Glass snake, 250*, 252 



Globe-fishes, 152 



Glossobalanus, 64, 84 



Glyptodon, 377 



Gnathonemus, 139 



Gnathostomata, 69 



Goats, 392 



