8o6 



INDEX 



Geographical isolation (cont.) 



marsupials, 568. 

 Geographical regions, 573. 

 Geography, changes of, 11, 573. 

 Geological periods, 11, 571. 

 Geomys, 659. 

 Geospizinae, 525. 

 Geotria, 121. 

 Gerbillus, 659. 

 Germ layers, 26, 69. 

 Giant nerve cells, amphioxus, 38. 



Lampetra, 97. 

 Gibbon, 626. 

 Gills, actinopterygii, 197. 



amphibia, 315. 



amphioxus, 30. 



Balanoglossus, 53. 



Cephalaspis, 127, 145. 



Cephalodiscus, 58. 



Ciona, 61. 



elasmobranchs, 157. 



hag-fishes, 123. 



lamprey, 89, 1 17. 



Pteraspis, 129. 

 Giraffes, 757. 

 Glires, 653. 



Globe-fishes, 246, 249, 252, 258. 

 Glossobalanus, 50. 

 Glottis, amphibia, 333. 



dipnoi, 261. 



reptiles, 360. 

 Glyptodon, 595. 



Gnathostomata, 24, 143, 175, 186. 

 Goats, 720. 

 Gobio, 221, 251, 266. 

 Goldcrest, 470. 

 Goldfish, 237, 252. 

 Gomphotherium, 715. 

 Gonads, see Reproduction, Fertiliza- 

 tion. 

 Goodrich, E. S., 35, 178. 

 Goodrichia, 175, 179. 

 Gopher, 659. 

 Gorilla, 626. 

 Graham, M., 287. 

 Grammatophora, 416. 

 Grammistes, 257. 



Grandry, corpuscles of, 432, 490. 

 Graptolites, 49, 59. 

 Graviportal animals, 697, 728, 742. 

 Gray, J., 134. 

 Grebe, 499, 516. 

 Grilse, 206. 

 Ground-sloths, 596. 

 Grouse, 518. 



Growth, relative, 599, 737. 

 Gruiformes, 518. 

 Grus, 518. 

 Guanin, 255. 



Guenon, 624. 

 Guereza, 625. 

 Guillemot, 519. 

 Guinea fowl, 518. 

 Gull, 468, 491, 519. 

 Gurnard, 237, 250. 

 Gymnophiona, 366. 

 Gymnothorax, 257. 

 Gymnotus, 254. 

 Gyps, 459- 



Habitat selection, birds, 491. 

 Haddock, cycles of, 285. 



yields of, 285. 

 Hadrosaurus, 424. 



Haemoglobin, see Pigments, blood. 

 Haemopoiesis, actinopterygii, 202. 



amphibia, 339. 



birds, 470. 



dipnoi, 278. 



lamprey, 93. 

 Hag-fish, see Myxine Bdellostoma. 

 Haldane, J. B. S., 770. 

 Hamadryas, 415. 

 Hapale, 621. 



Harris, J. E., 137, 178, 244. 

 Hatscheks pit, 31, 44, 65. 

 Hatteria, see Sphenodon. 

 Hawaii, birds of, 531. 

 Hawk, 482, 517. 

 Head, actinopterygii, 193. 



amphibia, 326. 



amphioxus, 32. 



birds, 464. 



elasmobranchs, 142. 



lamprey, 84. 



organization, 142. 

 Hearing, see Ear. 

 Heart, actinopterygii, 201, 234. 



amphibia, 334. 



birds, 470. 



chelonia, 397. 



Ciona, 62. 



crocodile, 420. 



dipnoi, 277. 



elasmobranchs, 159. 



lamprey, 91. 



Latimeria, z'jz. 



reptiles, 379, 397, 413, 420. 



snakes, 413. 



tunicates, 62. 



whales, 670. 

 Hedgehog, 583. 

 Hedge-sparrow, 522. 

 Heilmann, G., 488. 

 Heloderma, 378, 410. 

 Helodus, 185. 

 Hemichordata, 24, 50. 

 Heptranchias, 180. 



