INDEX 



951 



Hair, 778, 812. 



— worms, 236. 

 Halecids, 204. 

 Halermita, 204. 

 Halichoerus, 874. 

 Halichondria, 164. 

 Haliclystus, 205. 

 Halicore, 845, 846. 

 Halicryptus, 284. 

 Haliotis, 473. 

 Haliphysema, 132. 

 Halisarca, 162, 164. 

 Halitherium, 846. 

 Halobates, 404. 

 Halteres, 387. 

 Hamadryad, 709. 

 Hapalidae, 884. 

 Harderian gland, 553, 800. 

 Hare, 783, 867. 

 Harelip, 784. 



Harvest men, 417. 



— mites, 423. 

 Hastigerina, 133. 

 Hatteria, 684. 



Heart of Amphibia, 561. 



— of birds, 562. 



— of Crocodilia, 561. 



— of Dipnoi, 561. 



— of fishes, 561. 



— of Mammals, 562. 



— of Reptilia, 561. 



— of Vertebrates, 560. 

 Hectocotylus of cuttlefish, 464, 465. 

 Hedgehog, dentition of, 875. 



— development of, 819, 821, 831. 



— placenta of, 823. 

 Heliolites, 201. 

 HeUopora, 201. 

 Heliozoa, 112, 131. 

 Helix, 436, 436, 474- 



— shell of, 437, 437. 

 Heloderma, 694, 703. 

 Hemiaspidae, 429. 

 Hemichorda, 7, 489. 

 Hemimetabohc Insects, 384, 399. 

 Hemimyaria, 514. 

 Hemiptera, 384, 406, 411. 

 Henricia, 298. 

 Hepatopancreas, 33, 329. 

 Heptanchus, 556, 634. 

 Heredity, 88. 



— definition of, 96. 

 Hermaphrodite duct of snail, 443. 

 Hermaphroditism, 60, 64, 571. 



— of Cestodes, 224. 



— of Cirripedia, 345. 



— of earthworm, 252. 



— of fishes, 628. 



— of leech, 277. 



— of Myxine, 575. 



— of snail, 442. 



— of Trematoda, 215, 218. 



— of Tunicata, 505. 

 Hermit-crab, 352. 



— and sea-anemone, 360. 

 Herpestes, 872. 



Herrings, 641, 

 Hesperomis, 772, 773. 

 Heteroceras, 485. 

 Heterocercal, 631. 

 Heterocoela, 163. 

 Heterocoelous vertebrae, 726, 739. 

 Heterocotylea, 220. 

 Heterodera, 241. 

 Heterodont dentition, 815. 

 Heteronemertini, 235. 

 Heteronereis, 267. 



— parapodium of, 267 

 Heteropods, 473. 

 Hexacanth, 224. 

 Hexacoralla, 195, 203. 

 Hexactinellida 164. 

 Hibernation in Insects, 403. 



— in snail, 436, 441. 



— in toad, 681. 



Hind-gut = Proctodaeum, 553. 

 Hippocampus of brain, 797. 



— (sea-horse), 628. 

 Hippolyte, 353. 

 Hippopotamidae, 848. 

 Hippopotamus, 848. 

 Hippotherium, 856. 

 Hippurites, 482. 

 Hirudinea, 11, 271. 

 Hirudo, 272. 

 Histology, 40, 47. 

 Histriodrilus, 270. 



Hive-bee, homing power of, 390. 

 Hive-bees and cells, 383. 

 Hoatzin = Opisthocomus^ 4, 774. 

 Holoblastic segmentation, 76. 

 Holocephali, 635, 

 Holometabolic Insects, 384, 399. 

 Holophytic, 122. 137. 

 Holopneustic Insects, 392. 

 Holoptychius, 636. 

 Holopus, 312. 

 Holostei, 638. 

 Holothuria, 290, 308. 

 Holothurian, dissection of, 309. 

 Holothurians, spicules of, 306, 306 

 Holothuroidea, 305, 315. 

 Homarus, 320, 353. 

 Homo, 889. 



— neanderthalensis, restorationof headof, 



893. 

 Homocercal, 631. 

 Homoccela, 163. 

 Homodont dentition. 815. 

 Homology of organs, 14, 43, 106. 

 Homoplasty, 44. 

 Honeycomb bag, 851. 

 Honey-sac, 380. 

 Hoplocarida, 352. 

 Hormones, 36, 568. 



— in Crustacea, 331. 

 Hombill, 757. 

 Horns, 813. 

 Horse, 852, 854. 



— leg and foot of, 853, 855 



— skull of, 855. 

 House-fly, 406. 



