INDEX 



717 



Hydrlnce, 539, 564. 



Hydrobatida, 348. 



Hydrocaulus, 119, 120. 



Hydrocorallina:, 129. 



Hydroid compared with medusa, 124. 



Hydrophilida, 361. 



Hydrophis, 539. 



Hydro phyllium, 125, 126. 



Hydrorhiza, 119. 



Hydrotheca, 119, 120. 



Hydrozoa, 108, 118-129; classification, 

 128; metagenesis, 122; polymor- 

 phism, 126; reproduction, 127. 



Hyla, 512, 519, 520; HylidcR, 512, 519- 

 520. 



Hylobates, 665. 



Hy -lodes, 512. 



Hymenolepis, 166. 



Hymenoptera, 337, 364-369. 



Hyoid arch, 425, 437, 493, 494. 



Hyperbranchial groove, 395, 396. 



Hyperparasitism, 7. 



Hyphanlria, 353. 



Hypohippus, 701. 



Hypopachus, 512. 



Hypophysis, 417, 419, 501, 502. 



Hypostome, no, 120, 121. 



Hypotricha, 64. 



Hypsirhina, 539. 



Hyracoida, 645 ; Hyrax, 645. 



Hyracothcrium, 699, 700. 



Ibidida, 590; Ibis, 590, 601. 



7rya, 347, 363. 



IchneumonidcE, 364. 



Ifhthyobdella, 239. 



Ichthyomyzon, 420. 



Ichthyophis, 510, 513. 



Ichthyopterygium, 446. 



Ichthyornis, 589, 594; Ichthyornithi- 



formes, 589, 594. 



Ichtliyostiuri<i,5Ts; Ichthyosaurus, 573. 

 Ictalunts, 458. 

 Icier idee, 593. 

 7<fyz<i, 145. 

 Iguana, 537, 554, 571; Iguanidee, 537, 



554- 



Ileum, 484. 

 Ilium, 404, 495, 496. 

 Imago, 323. 

 Incisor, 635, 936, 679. 

 Incubation, 586, 626. 



Infundibulum, 146, 147, 501, 502. 



Infusoria, 27, 62, 63, 64, 65, 71. 



Ingestion, 29, 30. 



Ink sac, 265, 266. 



Insecta, 275, 312-371; anatomy and 

 physiology, 328-336; classification, 

 336-337 ; economic importance, 370- 

 371 ; review of orders, 337-369. 



Insectivora, 642, 649-650, 696. 



Inspiration, 451, 639. 



Integument, 402, 403, 676-678. 



Intermedium, 404, 496, 497. 



Intermuscular bones, 436. 



Interspinal bones, 437. 



Interstitial cells, 109. 



Intervertebral, discs, 636 ; ligaments, 636. 



Interzonal fibers, 15, 16. 



Intestine (see digestive system). 



Introvert, 188. 



Intussusception, 10. 



Invertebrates, i, 691. 



Iridocytes, 448. 



Iris, 412. 



Irritability, 10, 19. 



Ischium, 404, 495, 496. 



Isopoda, 296, 297, 301. 



Isoptera, 337, 340. 



Isospondyli, 443. 



Ixodidiz, 380. 



Jacana, 607, 608 ; Jacanida, 607, 608. 



Jaeger, 608. 



Jaguar, 656. 



Jay, 591- 



Jellyfish, 122, 123, 124. 



Julus, 309, 310. 



Jungle-fowl, 630. 



Jurassic Period, 697. 



Kangaroo, 642, 648. 



Karyosome, 13. 



Katabolism, 19, 29, 31. 



Keralosa, 105. 



Kidney, 401, 402 (see excretory organs). 



Kingbird, 615. 



Kingfisher, 591, 610, 6n. 



Kinglet, 591. 



Kinosternida, Kinosternon, 535, 541. 



Kite, 603, 605. 



Kittiwake, 608. 



Kiwi, 589, 598. 



Ktenenia, 382. 



