680 



INDEX. 



Liibiir, division of, 165 



Labridre, 576 



Labrum, 463 



Labyrinth, 128, 542 



Labyrintliodonta. 586 



Lac, 490 



Lacerta, 599 



Lacertilia, 598 



Lacertilido^, 599 



Lace wings, 482 



Lachrymal bone, 590 



Lachrymal gland, 542 



Lacinia, 473 



Lacteal dentition, 625 



Lacuna, 379 



Lacunar blood system, 1 13 



Ladder nervous system, 124 



Lady bird, 485 



Lady crab, 436 



Laemodipoda, 439 



Lagena, 543 



Lagomys 639 



Lama, 643 



Lamarck, 14, 22 



Lamarckism, 53 



Lamblia, 202 



Lamellae, Haversian, 87 



Lamellae bone, 87 



Lamellibranchiata, 35S 



Lamellicornia, 484 



Lamellirostres, 615 



Lamna, 571 



Lamnae, 618 



Lamprey eels, 555, 557 



Lampyridre, 484 



Land crab, 437 



Lanistes, 372 



Lantern of Aristotle, 345 



Larus, 615 



Larva, 160 



Larval organs, 161 



Laryngeal cartilages, 524 



Lateralia, 424 



Lateral line, 537, 564 



Lateral teeth, 359 



Latrodectes, 451 



Laurer's canal, 273 



Leaf butterflies, 47 



Leaf hoppers, 489 

 Leatherback tortoise, 595 

 Leather turtle, 596 

 Leda, 367 

 Leeches, 318 

 Leeuwenhoek, 13 

 Lemniscus, 304 

 Lemuridae, 649 

 Lemurs, G48, 649 

 Lens of eye, 130, 131, 541 

 Lepadidae, 425 

 Lepas, 172, 425 

 Lepidonotus, 313 

 Lepidoptera, 494 

 Lepidosauria, 594, 597 

 Lepidosiren, 579 

 Lepidosteidae, 574 

 Lepidosteus, 574 

 Lepidurus, 416 

 Lepisma, 477 

 Lepralia, 324 

 Leptalis, 48 

 Leptasterias, 337 

 Leptocardii, 502 

 Leptocephalus, 575 

 Leptochela, 441, 442 

 Leptoclinum, 510 

 Leptodiscus, 204 

 Leptodora, 417 

 LeptomedusEe, 239, 242 

 Leptoplana, no, 271 

 Leptostraca, 427 

 Lepus, 639 

 Lerncea, 422 

 Lernsidce, 422 

 Lernaeocera, 421. 422 

 Lernceopodida^, 422 

 Leucania, 495 

 Leucetta, 225 

 Leuckart, 18 

 Leucocytes, 88 

 Leucon, 223 

 Leucones, 226 

 Leucoi'tis, 226 

 Leucosoidea. 437 

 Leucosolenia, 225 

 Libellula, 479 

 Libellulid;i;, 479 



