372 
Hectocotylus, 209. 
Hedgehog, 25, 312, 340. 
Helix, 22, 
Hemelytra, 166. 
Hemerobiide, 169. 
Hemicidaris, 105. 
Hemimetabolic Insects, 162, 166. 
Hemiptera, 21, 166. 
Hermit-crabs, 20, 141. 
Heron, 23, 289, 293, 294. 
Herring, 22, 241. ‘ 
Heterocercal Tail (Fishes), 231. 
Heteropoda, 201, 202. 
Hippobosca, 171. 
Hippocampidre, 242. 
Hippopotamus, 25, 324. 
Hirudinea,” 19, 181;, general char- 
acters of, 131. 
Hirudo, 19. 
Hirundinide, 24, 308. 
Hog, 25. 
Holocephalt, 245. 
Holometabolic Insects, 162, 170. 
folothuria, 19. 
Holothuroidea, 19, 104; general char- 
acters of, 115, 116. 
Homarus, 29, 178. 
Homocercal Tail (Fishes), 231. 
Homology, 14. 
Honey Badger, 334. 
Honey-eater, 302. 
Hoopoe, 302. 
_~Horn-bill, 301. 
Horse, 25, 324. 
Horse-shoe Bats, 25. 
House-fly, 171. 
Howlers (Monkeys), 25, 343. 
Humming-birds, 24, 289, 302. 
Hycnide, 25, 831, 335, 
Hydatids, 121. 
Hydatina, 125, 
Hydra, 5, 62; reproduction of, 65. 
Hydrachna, 20, 152. 
Hydra-tuba, 85. 
Hydrida, 62. 
Hydroida, 17, 62; reproduction of, 67, 
et seq. 
Hydroid Zoophites, 62. 
Hydrophide, 28, 267. 
Hydrorhiza, 62. 
Hydrosoma, 60, 62. 
Hydrothece, 72. 
Hydrozoa, 17, 57; general characters 
of, 57; terminology of. ib ; reproduc- 
tion of, 68 ; divisions of, 62. 
Hyla, 238. 
Hvylobates, 25, 344. 
ITymenoptera, 21, 173. 
Hyracoidea, 25,313 ; general characters 
of, 330. 
Hyraz, 25, 330, 
Fystricide, 25, 337. 
Isis, 294. 
Ichneumon (Insecta), 158, 173. 
Ichihyomorpha, 249, et seq. 
Ichthyophthira, 20, 148, 
INDEX. 
Ichthyopsida, 225, 227, 247. 
Ichthyopterygia, 28, 260 ; characters of, 
278, et seq. 
Ichthyosaurus, 28, 273. 
Iguana, 23, 268. 
Iguanidce, 23. 
Iguanodon, 28. 
Ilyanthus, 98. 
Imago, 162. 
Imperforata (Foraminifera), 37. 
Individual, definition of, 57, ef seq. 
Infusoria, 17, 27, 28, 58; general char- 
acters of, 47; development of, in 
organic infusions, ib. ; distribution of, 
in space, 52. 
Insecta, 20,1387; general characters of, 
157, et seq.; organs of the mouth of, 
158; digestive system of, 160; meta- 
morphoses of, 162 ; orders of, 165, et seq. 
Insectivora, 25, 313; general characters 
of, 340. 
* Insessores, 24, 289, 300. 
Invertebrata, general characters of, 15. 
Isis, 99. 
Isopoda 20, 143, 
TIulus, 20, 156. 
Txodes, 2). 
| JAcARE, 272. 
Jackal, 335. 
Jaguar, 335, 336. 
| Jay, 24, 301. 
| Jelly-fishes, 18, 79, et seq. 
| Jerboa, 338. 
KALONG, 340. 
Kangaroo, 24, 312, 317. 
| Kangaroo-bears, 24, 316, 317 
King-crabs, 20, 144. 
Kingfisher, 24, 303, 
Koala, 316. 
Koodoo, 829. 
LABiIum, 159, 
Labrum, 159. 
Labyrinthodontia, 23, 248, 254. 
Lace-coral, 21. 
| Lacerta, 23, 269, 270. 
Lacertilia, 28, 257, 260; general charac- 
ters of, 268, et seq. 
Lemodipoda, 20, 148. 
| Lagena, 17, 36, 58. 
Lagopus, 297. 
Lamellibranchiata, 21, 181, 191; gene- 
ral characters of, 193, e¢ seq. 
Lampreys, 22, 228, 238, 239. 
Lamp-shells, 21, 183. 
Lancelet, 22, 224, 228, 234, 236, 237. 
Landcrab, 20. 
Land-salamanders, 251. 
Laniide, 302. 
Lapwing, 294. 
Laride, 23, 291. 
Larks, 24, 289, 301. 
Larva (of Insecta), 162, 163. 
Leeches, 19, 131, 182. 
Lemming, 388. 
