678 



INDEX. 



Homoptera, 489 

 Honey ant, 488 

 Honeycomb, 641 

 Hoofs, 618 

 Hooker, 24 

 Hoploceras, 643 

 Hoplorhynchus, 213 

 Hop worm, 495 

 Hormea, 324 

 Hormiphora, 262, 264 

 Horn bills, 616 

 Horns of cord, 533 

 Horned toad, 599 

 Horn tails, 486 

 Horse flies, 493 

 Horse mackerel, 577 

 Horses, 641 

 Horseshoe crab, 444 

 House fly, 492, 493 

 Human embryo, 35 

 Humerus, 529 

 Humming birds, 616 

 Huxley, 18, 24 

 Hyaena, 647 

 Hyaenidse, 647 

 Hyalea, 381 

 Hyaleidse, 382 

 Hyaline cartilage, 86 

 Hyalonema, 226 

 Hyalopus, 198 

 Hyalospongia, 226 

 Hyas, 437 

 Hyatt, 24 

 Hybrids, 28 

 Hydnophyton, 488 

 Hydra, 230, 240 

 Hydra, section of, 141 

 Hydrachna, 454 

 Hydrachnidse, 454 

 Hydractinia, 241 

 Hydranth, 231 

 Hydraria, 239, 240 

 Hydrichthys, 240, 242 

 Hydrobatidoe, 489 

 Hydrocaulus, 231 

 Hydrochoerus, 639 

 Hydrocorallina, 239, 241 

 Hydrocores, 489 



Hydroides, 313 

 Hydromedusae, 230 

 Hydrophilidse, 484 

 Hydropolyp, 230 

 Hydropsyche, 483 

 Hydrorhiza, 231 

 Hydrosauria, 594 

 Hydrotheca, 233 

 Hydrozoa, 230 

 Hyla, 588 

 Hylesinus, 485 

 Hylidse, 588 

 Hylobates, 651 

 Hylodes, 586 

 Hymenolepis, 287, 288 

 Hymenoptera, 485 

 Hyocrinus, 340 

 Hyoid arch, 524 

 Hyoid bone, 524 

 Hyoid cartilage, 524 

 Hyomandibular, 524, 525 

 Hypsena, 495 

 Hypaxial muscles, 518 

 Hyperia, 439 

 Hyperina, 439 

 Hyperoartia, 557 

 Hyperotretia, 557 

 Hypoblast, 156 

 Hypobranchial groove, 503 

 Hypoderma, 493 

 Hypodermis, 398 

 Hypogeophis, 587 

 Hypoglossal nerve, 536 

 Hypopharynx, 463 

 Hypophysis, 535 

 Hypoplastron, 595 

 Hyporachis, 603 

 Hypotricha, 21 1 

 Hyracoidea, 644 

 Hyracotherium, 643 

 Hyrax, 644 

 Hystricidse, 639 

 Hystricomorpha, 639 

 Hystrix, 639 



lapyx, 477 

 Ibis, 615 

 Ichneumonidse, 486 



