INDEX. 



427 



Hadrosaurus, 317. 

 Haemal arch, 138. 

 Haemal process, 138. 

 Haemal spine, 138. 

 Haemapophysis, 138. 

 Haemulon, 259. 

 Hag-fish, 224. 

 Hair, 97, 352. 

 Hair cells, 73. 

 Hake, 264. 

 Halcyon, 348. 

 Halecomorphi, 252. 

 Halibut, 265. 

 Halicore, 405. 

 Halicoridae, 405. 

 Halitherium, 405. 

 Hallux, 176. 



Hammer-head shark, 239. 

 Hamster, 390. 

 Hapale, 415. 

 Hapalidae, 415. 

 Haploceras, 399. 

 Haplodoci, 265. 

 Haplodon, 390. 

 Haplodontidae, 390. 

 Haplodont, 365. 

 Haplomi, 257. 

 Harderian glands, 84. 

 Hares, 391. 

 Harriotta, 242. 

 Hatteria, 313. 

 Haversian canals, 14. 

 Hawk, 348. 

 Head cavities, in. 

 Head kidney, 116, 118. 

 Head, segmentation of, 201. 

 Heart, 178, 184. 

 Heart muscle, 12. 

 Hedgehog, 385. 

 Heliornis, 349. 

 Helladotherium, 399. 

 Hell-bender, 285. 

 Heloderma, 321. 

 Helodermidae, 321. 

 Hemiazygos vein, 196. 

 Hemibranchii, 257. 

 Hemichordia, i. 

 Hemipenes, 304. 

 Hemispheres, cerebral, 49. 

 Hemispheres of cerebellum, 



54- 



Hemitripterus, 260. 

 Hepatic artery, 190. 

 Hepatic duct, 41. 



Hepatic vein, 192. 

 Hepato-enteric duct, 41. 

 Heptanchus, 238. 

 Heptatrema, 224. 

 Herodias, 348. 

 Herodii, 348. 

 Heron, 348. 

 Herpestes, 412. 

 Herring, 256. 

 Hesperomys, 390. 

 Hesperornis, 344. 

 Heterocercal fin, 229. 

 Heterodon, 325. 

 Heterodont, 20. 

 Heteropygii, 257. 

 Heterosomata, 264. 

 Heterostraci, 224. 

 Hexanchus, 238. 

 Hindbrain, 49. 

 Hindgut, 36. 

 Hipparion, 395. 

 Hippocampus, 258. 

 Hippoglossus, 265. 

 Hippopotamidas, 397. 

 Hippopotamus, 398. 

 Hipposiderus, 387. 

 Histiophorus, 263. 

 Histology, 9. 

 Hogs, 397. 

 Holacanthus, 262. 

 Holconoti, 260. 

 Holconotus, 260. 

 Holoblastic eggs, 210. 

 Holocentridae, 261. 

 Holocentrum, 261. 

 Holocephali, 240. 

 Holoptychius, 249. 

 Holostei, 251. 

 Homaeosaurus, 314. 

 Hominidae, 416. 

 Homo, 417. 

 Homocercal fin, 229. 

 Homodont, ao, 364. 

 Homunculus, 416. 

 Honeycomb, 35. 

 Honey guide, 348. 

 Hooded seal, 414. 

 Hoofs, 99. 

 Hoopoe, 348. 

 Hoplophoneus, 412. 

 Hoplophorus, 383. 

 Horn, 99. 

 Horn bill, 348. 

 Horned pout, 255. 



Horned toad, 320. 

 Horses, 395. 

 Horse mackerel, 263. 

 Howling monkey, 416. 

 Humerus, 176. 

 Humming birds, 350. 

 Hump-back whale, 410. 

 Hyaena, 412. 

 Hyaenarctus, 412. 

 Hyaenidos, 412. 

 Hyaenodontidae, 411. 

 Hyaline cartilage, 14. 

 Hydatid, 128. 

 Hydrophidae, 325. 

 Hydropotes, 399. 

 Hydrochcerus, 391. 

 Hyla, 287. 

 Hylerpeton, 283. 

 Hylidae, 287. 

 Hylobates, 416, 

 Hylonomus, 283. 

 Hyoid, 155. 

 Hyoid arch, 155. 

 Hyornandibula, 155. 

 Hyomandibularis nerve, 62. 

 Hyomoschus, 398. 

 Hyoplastron, 308. 

 Hyopotamus, 397. 

 Hypaxial muscles, 109. 

 Hyperoartia, 223. 

 Hyperodapedon, 314. 

 Hyperoodon, 409. 

 Hyperotretia, 224. 

 Hypoblast, 6. 

 Hypobranchial, 154. 

 Hypocentrum, 136. 

 Hypocone, 365. 

 Hypogastric artery, 183, 190. 

 Hypogastric vein, 194, 197. 

 Hypogeophis, 288. 

 Hypohyal, 155. 

 Hypomere, 101. 

 Hypoplastron, 308. 

 Hypophysial duct, 52. 

 Hypophysis, 52. 

 Hypsiprymnidse, 380. 

 Hypsiprymnus, 380. 

 Hypsirhopus, 316. 

 Hyrachius, 395. 

 Hyracodon, 395. 

 Hyracoidea, 402. 

 Hyracotherium, 395. 

 Hyrax, 402. 

 Hystricidae, 391. 



