INDEX 



S07 



Herbivores, succession of, 542. 

 Herbst, corpuscles, 490. 

 Heron, 461, 493. 

 Herpestes, 688. 

 Herring, 237, 251. 



reproduction, 265, 283. 



shoaling, 281. 

 Hesperornis, 513. 

 Heterodontus, 180, 771. 

 Heterostraci, 81, 128. 

 Hexanchus, 146, 180. 

 Hibernation, bats, 588. 



birds, 471. 



insectivores, 582. 

 Hipparion, 737. 

 Hippidion, 737. 



Hippocampus, 237, 246, 249, 256, 266. 

 Hippopotamus, 748. 

 Hippural bones, 200. 

 Hirundo, 522. 

 Histricomorpha, 657. 

 Hoatzin, 518. 

 Hogben, L., 164, 300. 

 Holacanthus, 257. 

 Holmes, A., 17. 

 Holocephali, 184. 

 Holostei, 234. 

 Homalodotherium, 702. 

 Homeostasis, 4, 773, 781. 



amphibia, 368. 



mammals, 534. 

 Homeothermy, amphibia, 299. 



evolution, 372. 



reptilia, 372. 

 Homing, birds, 493. 

 Homo, 633. 

 Homoeosaurus , 402. 

 Homogalax, 728. 

 Homunculus, 622. 

 Hoplopteryx, 237. 

 Hornbill, 467. 

 Horns, 696, 741, 758. 

 Horse, 695. 

 Howard, Eliot, 503. 

 Humming-birds, 520. 

 Huxley, J. S., 504, 737. 

 Huxley, T. H., 149. 

 Hyaena, 688. 

 Hyaenodon, 684. 

 Hybodus, 180. 

 Hydrochoerus, 661. 

 Hydrophiidae, 415. 

 Hyla, 299, 360, 366. 

 Hylobates, 626. 

 Hyoid, see Branchial arches. 

 Hyopsodus, 700. 

 Hyperoodon, 674. 

 Hypobythius, 70. 

 Hypohippus, 736. 



Hypophysial sac, Lampetra, 106. 

 Hypophysis, see Pituitary. 



Hypotremata, 180, 182. 

 Hyrachyus, 729. 

 Hyracodonts, 730. 

 Hyracoidea, 707. 

 Hyracotherium, 726, 774. 

 Hystricomorpha, 657. 

 Hystrix, 661. 



Ice Ages, 15, 648. 

 Ichthyophis, 366. 

 Ichthyopterygia, 40 1 . 

 Ichthyornis, 513. 

 Ichthyosauria, 401. 

 Ichthyostega, 326, 356. 

 Ictidosauria, 544. 

 Iguana, 407. 



limbs, 315. 

 Iguanodon, 424. 

 Impala, 762. 

 Indri, 610. 



Insect-feeders, paraliel evolution, 778. 

 Insectivora, 581. 

 Interrenal, see Adrenal. 

 Intestine, actinopterygii, 201, 233. 



amphibia, 343. 



amphioxus, 32. 



Balanoglossus, 54. 



birds, 469. 



Ciona, 62. 



elasmobranchs, 159. 



lampreys, 90. 

 Iodine, amphioxus, 32. 



Lampetra, 117. 



tunicates, 62. 

 Iridocytes, 255. 

 Iris, see Eyes. 

 Irregularia, 48. 

 Ischyromyidae, 657. 

 Isinglass, 280. 

 Island faunas, 524. 

 Isopedin, 129, 269. 

 Isospondyli, 237. 

 Isostasy, 12. 

 Isotopes, 3, 16. 

 Isuridae, 131. 



Jackdaw, 463, 521. 



Jacobson's organ, 156, 342, 350, 385, 



405- 

 Jamoytius, 127. 

 Jaws, acanthodii, 146, 187. 



actinopterygii, 195, 230, 234, 235. 



amphibia, 327, 330. 



birds, 464. 



carnivora, 682. 



crossopterygians, 270, 273. 



dinosaurs, 423. 



