INDEX. 



831 



Halibut, 487. 



Halichondria, 87. 



Haticore, 681, 682. 



Haiiomma, 79. 



Haliotidce, 412. 



Halisarca, 87. 



Halitherium, 646, 680, 684. 



Halteres, 335-, 354. 



Hamites, 436, 437. 



Hamster, 758. 



Hapale, 776. 



Hapalidce, 796. 



Haplophyllia, 173, 181, 185. 



Hares, 754. 



Harlequin-snakes, 543. 



Harpagornis, 633. 



Hartea, 166. 



Harvest-men, 322. 



Harvest-ticks, 322. 



Hatteria, 553, 554. 



Hawks, 632. 



Hawk's-bill Turtle, 535, 536. 



Heart-urchins, 200. 



Hectocotylus, 424. 



Hedgehog, 769. 



Helarctos, 740. 



Helianthoid Polypes, 154. 



Helicidce, 415. 



Heliolites, 172, 185. 



Heliophyllum, 175. 



Heliopora, 170, 171, 181. 



Helioporidce, 166, 170, 181, 185. 



Heliozoa, 77, 81. 



Helladotherium, 717, 722. 



Heloderma, 550. 



Hemelytra, 335, 348. 



Hemimetabola (Insectd), 341, 344, 347. 



Hemiptera, 335, 337 ; characters of, 347 ; 

 divisions, 348. 



Hemerobiidce, 351. 



Heptatrema, 482. 



Hermit-crab, 310. 



Heron, 610. 



Herpestes, 746. 



Herring, 486. 



Hesperornis, 634, 635. 



Hessian Fly, 355. 



Heterocera, 356. 



Heterocercal tail of Fishes, 469, 470, 471. 



Heterogeny, 43, 44. 



Heteromastix, 100. 



Heteromera, 362. 



Heteronereis, 269. 



Heterophagi, 589. 



Heterophrys, 82. 



Heteropoda, 406, 408 ; characters of, 413 ; 

 shell of, 414 ; divisions of, ib. ; distri- 

 bution of, in time, 416. 



Heteroptera, 348. 



Hexacoralla, 154. 



Hexactinellidce, 89, 90. 



Hexaprotodon, 722. 



Hexarthra, 251. 



Himantopus, 612. 



Hipparion, 701, 702. 



Hippoboscidce, 355. 



Hippocampidce, 488. 



Hippocrepian Polyzoa, 375. 



Hippopotamidce, 704. 



Hippopotamus, 704. 



Hippuritidce, 403, 404. 



ttirudinea, general characters of, 260. 



Hirundinidce, 628, 629. 



Holocephali, 496, 507. 



Holocystis, 175, 185. 



Holometabola (fnsecta), 342, 344, 353. 



Holoptychius, 505. 



Holopus, 212, 222. 



Holostomata (Gasteropoda), 410,411 412 

 416. 



Holothuria, 219, 222. 



Holothuroidea, 192, 193 ; characters of, 

 218 ; sub-orders of, 221 ; distribution of 

 in space, 222 ; in time, 224. 



Homarus, 278. 



Homo, 782. 



Homocercal tails of Fishes, 469, 470,471 ,483. 



Homology, 23 ; serial, i&. 



Homomorphism, 23. 



Homoptera, 348. 



Honey-badger, 742. 



Honey-bear, 740. 



Honey-eater, 627, 628. 



Honey-guide, 620. 



Hooded Snake, 543. 



Hoopoe, 627. 



Hoplocephalus, 543. 



Hormiphora, 180. 



Horn-bill, 624. 



Horned Ray, 500. 



Horned Viper, 542. 



Hornet, 358. 



Horse, 644, 645, 700, 7Q1. 



Horse-mussel, 403. 



Horse-shoe Crabs, 300. 



House-fly, 355. 



Howling Monkey, 777. 



Hurnming-birds, 627. 



Hump-backed Whales, 688. 



Hunting- dog, 748. 



Hyaena, 746, 747, 752. 



Hycenarctos, 751. 



Hycenidce, 746, 751. 



Hycenodon, 752. 



Hycenodontidce, 752. 



Hyalea, 417, 418. 



Hyalonema, 90. 



Hyalosphenia, 65. 



Hi/bodus, 498. 



Hydatids, 235, 236. 



Hydatinea, 251. 



Hydra, 34, 108, 109; structure of, 112; 

 reproduction of, 113; thread -cells of, 

 107; development of, 114; distribution 

 of, 149. 



Hydrachna, 321. 



Hydrachnidce, 322. 



Hydractinia, 36, 115, 118, 120, 121, 150. 



Hydra-tuba, 37, 139, 140. 



Hydrida, 112. 



Hydrocaulus, 122. 



Hydrochcerus, 755. 



Hydrocorallince, 111, 145, 150, 151. 



Hydrocorisce, 349. 



Hydrocysts, 135. 



Hydroecium, 133. 



Hydroid Zoophytes (see Hydroida). 



Hydroida, characters and divisions of, 

 111; reproduction of, 115-118; distin- 

 guished from Polyzoa, 371, 372. 



Hydromedusidce, 127. 



Hydrometra, 349. 



Hydrophidce, 541, 543. 



Hydrophilidce, 362. 



