INDEX 



593 



Interfdar substance, 53 

 Interh\-al hone, 496 

 Intermaxillariui, 461 

 Interniudium, 465 

 Internal secretions, no 

 Interjjarietal bone, 54(3 

 Interradii, 124, 21)3 

 Interseptal space, 227 

 Intervertebral cariilage, 



ligaments, 550 

 Intestine, 05 

 Intraseptal space, 227 

 Intratarsal joint, 524 

 Involuntary muscles, 81 

 Iris, 120, 476 

 Ischiopodite, 97 

 Ischium, 464 

 Isodont, 31S 

 Isogametes, 16S 

 Isopoda, 38 5 

 Isoptera, 419 

 Itch, 397 

 Ixodes, 397 



Jacobson's organ, 475 

 Japyx, 419 

 Jassidje, 428 

 Jays, 544 

 Jigger flea, 431 

 Jugal bone, 462 

 Jugular vein, 4S4 

 Julus, 434 

 June bugs, 424 



Kallima, 38 

 Kangaroos, 561 

 Karyokinesis, 60 

 Katydid, 421 

 Keratin, 67, 205 

 Keyhole limpet, 333 

 Kidneys, 105, 48S 

 Kingfishers, 544 

 Kinosternon, 527 

 Knee pan, 465 

 Kcenenia, 393 

 Krause's corpuscle, 473 



Labial cartilages, 460 



palpi, 320 

 Labium, 405 

 Labor, division of, 63, 12 

 Labrida;, 510 

 Labrura, 405 

 Labyrinth, ir7, 478, 479 

 Labyrinthodonta, srg 

 3S 



Lacerta, 530 



Lacerlilia, 521) 



Lace wings, 422 



Lacinia, 406 



Lacrimal gland, 477 



Lacunar blood svstem, 103 



Ladder nervous system, 113 



Lady birds, 424 

 455 Licmodipioda, 384 



Lagena, ir7, 47S 



Lagomorpha, 566 



Lagomys, 566 



Lamarckism, 46 



Lamblia, 184 



Lamellibranthiata, 317 



LameUicornia, 424 



Lamellirostrcs, 543 



Lamna, 451, 546 



Lamprey eels, 491 



LampjTidje, 424 



Land crabs, 3S3 



Lantern of Aristotle, 305 



Larus, 543 



Larva, 150, 414 



Larval organs, i ^o 



Lar\-nx, 4S2, 516 



Larj'ngeal cartilages, 46 r 



Lateraha, 372 



Lateral line organs, 499 



Lateral organs, 271 



Latrodectes, 396 



Laurer's canal, 344 



Lazy worm, 267 



Leaf hoppers, 428 



Leather turtles, 527 



Leda, 323 



Leeches, 281 



Lemnisci, 269 



Lemurs, 572 



Lens, 119, 477 



Lcpas, 159, 373 



Lepidurus, 366 



Lepidonolus, 277 



Lepidoptera, 432 

 Lepidosauria, 528 

 Lepidosiren, 513 

 Lepidosteus, 508 

 Lepisma, 418 

 Leptasterias, 298 

 Leptalis, 39 

 6 Leplocardii, 439 

 Leptocephalus, 510 

 Leptochela, 386 

 Leptoclinum, 446 

 Leptodiscus, 185 



Leptodora, 366 



Lepto medusa;, 217 



Leptoplana, 242 



Leptostraca, 375 



Lepus, 566 



Lerniea, 370 



Lerna'ocera, 370 



Lcrna-opodida', 370 



Leucetta, 203 



Leucocytes, 78 



Leucon, 203 



Leucones, 204 



Leucortis, 204 



Leucocytozoon, 183 



Leucosoidea 382 



Leucosolenia, 204 



Libellula, 420 



Libinia, 382 



Lice, bee, 431 

 bird, 420 

 book, 420 

 human, 430 

 pilant, 430 

 Liebcrktihn's glands, 69 

 Licshmania, 1S4 

 Life, origin of, 127 

 Ligulidre, 253 

 Limacida:, 336 

 Limacinidce, 335 

 Limax, 336 

 Limbs, skelton of, 462 

 Limicola, 279 

 Limnadia, 366 

 LimuEea, 336 

 Limnoria, 3S6 

 Limpets, m 

 Limulus, 387 

 Linckia, 296 



Linear nervous system, 112 

 Lines of growth, 317 

 Lineus, 258 



Lingual ribbon, 314, 329 

 Linguatulida, 397 

 Lingula, 290 

 Linin, 56 

 Linnean system, 7 

 Liobunum, 394 

 Lion, 565 

 Lips, 554 



Liquor cerebrospinalis, 467 

 Liriope, 216, 2rS 

 Lithistida', 204 

 Lithobius, 403 

 Lithodida;, 3S2 

 Lithodomus, 323 



