934 



INDEX 



Hemoglobin, 57, 205, 375, 513 

 Hemol>-mph, 394 

 Hemophilia, 839 

 Hemophiliacs, 395 

 Hepatic caeca, 229 



portal vein, 434, 509 

 Heredity, 821 



physical basis, 824 

 Hermaphrodite, 154 

 Hermaphroditic condition. 112 

 Hermaphroditism, 40S, 063 

 Hermit crab, regeneration. 685 

 Herodias egretta, 588 

 Heron, 588 

 Herring, 447, 448 

 Herrings, round, 448 

 Hertzian waves, 701 

 Hetaerina americana, 321 

 Hetaerius tristriatus, 340 

 Heterocera, suborder, 325 

 Heterocercal tail. 426 

 Heterocoela, order, 121 

 Heterocoelous vertebrae. 609 

 Heterodont condition, 643 

 Heteronomous condition, 203 

 Heterophyllidea, order. 161 

 Heterosomata. suborder. 451 

 Heterotrichida, 71 

 Heterozygous individual, 825 

 Hexylresorcinol, 183 

 Hibernation, 476 



in amphibia, 480 

 Hiodon tergisus. 448 

 Hiodontidae. 447 

 Hippiscus, 315 



corallipes, 310 

 Hippoboscidae, 330 

 Hippocrates, 36 

 Hippoglossidae, family, 452 

 Hippopotamuses. 630 

 Hirudinea. 194. 212 

 Hirudo. 195, 212 

 Histogenesis. 801 

 Histology, 21 

 History of zoology, 36 

 Hogs, 632 



Holoblastic cleavage, 802 

 Holocephali, subclass, 425 

 Holometabolous, 308 

 Holostei, order, 447 

 Holothuria. 224 

 Holothuroidea. class, 222 

 Holotrichida, 70 

 Holozoic animals, 66 

 Homo sapiens, 22 

 Homocercal tail. 443 

 Homocoela, order, 120 

 Homoiothermal condition. 616 

 Homology. 271. 663 



serial. 271 

 Homonomous condition, 263 

 Homoptera, order, 266, 316. 318 

 Homozygous individual. 825 

 Honey bee, 357 

 Honeydew, 340 

 Hoofed animals, 629 

 Hooke. Robt, 49 

 Hormones, 666 



of non-chordates, 667 

 plant growth, 667 

 sex, 675 

 Horned lizard, 561 

 arteries. 568 

 internal structure, 566 

 reproduction, 571 

 urinogenital system, .571 

 veins, 570 

 Horned "toad," 561 

 Horntails, pigeon, 331 



Horse, 633 



Equus caballus, 876 

 its rise, 874 



phylogenetic development, 875 

 Horsefly, green-headed, 331 

 Horsehair snake, 175, 177 

 Horseshoe crab, 266 

 Host specificity, 741 

 Housefly, life history, 330 

 Hudsonian zone, 714 

 Human blood cells. 396 



heredity, 836 

 Humboldtiana. 242 



ciiisosensis. 239 

 Hummingbirds. 593 

 Huxley, Thomas H.. IS, 47 

 Hyaline cartilage, 107 

 Hyaloplasm, 00 

 Hyalospongiae, class, 121 

 Hydatina, life cycle. 191 

 Hydra, 131, 144 

 life cycle, 153 

 locomotion, 145 

 metabolism, 151 

 regeneration. 156 

 viridissima, 144, 146 

 Hydranths, 132 

 Hydrobios, 713 

 Hydrocaulus, 132 

 Hydrocephalus, 664 

 Hydrocorallina. 136 

 Hydrolysis, 384 

 Hydromedusae, 135 

 Hydrophidae, family, 559 

 Hydropsyche, partita, 322 

 Hydrorhiza, 132 

 Hydrostatic organ, 464 

 Hydrotheca, 133 

 Hydrozoa, class, 131 

 Hyla, 486 

 cinerea, 474 

 crucifer. tree frog, 483 

 Hylobates, gibbons, 637 

 Hyman, Libbie H., 144 

 Hymenolepis, 161 

 nana, 765 

 Hymenoptera, order, 266, 331, 357 

 Hyoid arch, 465 

 Hypaxial portion of body. 496 

 Hyperbranchial groove. 373 

 Hyperoartii. 412 

 Hyperotreti, 412 

 Hyperthyroidism, 669 

 Hypertrophy, 691 

 Hypnotoxin, 149 

 Hypobranchial groove, 372 

 Hypodermis, 308 

 Hypopharyux. 305 

 Hypophysis. 469 



frog, 526 

 Hyporachis 

 Hypostome, 

 Hypothesis, 

 Hypotrichida 



601 

 134, 

 18 

 71 



147 



I 



I 

 if 



Ichthyomyzon, 413 



Ichthyophis glutinosus, the caecilian, 473 

 Icius similis. 2!)(i 

 Ideal continent, 722 

 Idotea, 282 



Iguanidae, family. 551 

 Ileocaecal valve, 565 

 Ileum, 499, 564 

 Iliac arteries of frog, 507 

 Ilium. 611 

 of frog. 521 





