710 



INDEX. 



Idotsea, nervous system of, 286, 

 290 



Idyia roseola, 93 



Iguana, 504 



Iguanodon, 515 



Individuality, 656 



Ineducabilia, 582 



Infusoria, 31, 40 



Inheritance, law of, 11 



Insectivora, 587, 629 



Insects, anatomy of, 308 

 brain of, 817 

 characters of, 307, 344 

 classification of, 365 

 digestion in, 316 

 ears of, 325 

 eye of, 325 

 embryology of, 329 

 locomotion in, 337 

 metamorphosis of, 308 

 parthenogenesis in, 833 

 polymorphism in, 348 

 respiration of, 323 

 senses of, 826 

 useful, 334 



Instinct, nature of, 680 



Isopoda, 285 



Isurus punctatus, 420 



Ixodes albipictiis, 341 

 bovis, 341 



Jacchus, 620 

 Jaws, 631 

 Jelly-fish, 62 

 Julus, 336 



Kangaboo, 575, 577 

 Katydid, 676 

 Killer-whale, 595 

 King-bird, 552 

 King-crab, 297 

 Kinglet, 555 

 Kiwi-kiwi, 538 

 Kogia Flowed, 594 



Labtrinthici, 457 

 Labyrinthodon, 482, 483 

 Labyrinthodontia, 482 

 Lacertilia, 501, 517 

 Lachnosterna fusca, 352 

 Lactoplirys trigonus, 463 

 Laelaps, 515 



Lagopus leucurus, 546, 546 

 Lamellibranchiata, 222 



classification of, 236 

 Lampreys, 409 

 Lamp shells, 188 

 Lancelet, 406 



Larva of Echinoderms, 96, 105, 

 110, 1.12, 120 



Hydrozoa, 83 



Insects, 328 



Woi-ms, 232 

 Lasso-cells in Aurelia, 67 



Hydra, 53 



Infusoria, 37 



Polyps, 76, 81 



Sponges, 43 



Worms, 143 

 Lateral line of fishes, 442 

 Leaf insect, 657 

 Leech, 266 

 Lemnisci, 165 

 Lemur, 618 

 Lepas fiiscicularis, 273 

 Lepidoptera, 357, 367 

 Lepidosiren paradoxa, 430 

 Lepidosteus, development of, 432^ 



osseus, 431 



platystomus, 432 



spatula, 433 

 Lepidurus Couesii, 282 

 Lepomonera, 23 

 Leptocardii, 406, 408 

 Leptocephalus, 446 

 Leptodiscus medusoides, 34 

 Leptoplana, 144 

 Leptosynapta Girardii, 134 

 Lcptychaster, 114 



