INDEX. 
Lepus Americanus, 586 
Bairdii., 586 
Lernea branchialis, 277 
Lerneonema radiata, 278 
Leucochloridium, 110 
Lice, plant, 350 
Ligula simplicissima, 120 
Limacina arctica, 238 
Limax flavus, 245 
Limicole, 544 
Limnadia Agassizii, 282 
Limnetis Gouldii, 281, 282 
Limnoria terebrans, 290 
Limpet, 248 
Limulus, anatomy of, 297 
development of, 300 
Polyphemus, 297 
Lineus, 156 
Lingual ribbon of mollusks, 256, 
632 
Linguatulina, 340 
Lingula, 147, 148, 149 
pyramidata, 153 
Liodon, 500 
Lissotriton punctatus, 481 
Lithobius Americanus, 338 
Lithodomus, 230 
Littorina littorea, 248 
Liver fluke, 108 
Lizards, sea, 504 
structure of, 501 
Lobatse, 95 
Lobster, anatomy of, 266 
Locust, anatomy of, 808 
Loggerhead turtle, 510 
Loligo pallida, 2538 
Pealii, anatomy of, 253 
Loon, 541 
Lophius piscatorius, 460 
Lophobranchii, 460 
Lophohelia prolifera, 80 
Lophophore, 140 
Loxosoma, 148, 145 
Lucernaria, 63 
711 
Lucifuga subterraneus, 459 
Luidia, 196 
Lumbricus agricola, 168 
rubellus, 168 
terrestris, 167 
Lunatia heros, anatomy of, 241 
Lung-fish, 428 
Lymneus appressus, 246 
elodes, 246 
Lymphatics, 636 
Lynx Canadensis, 617 
rufus, 617 
Lyre-bird, 552 
Lystrosaurus, 513 
Lytta marginata, 353 
Macacvs, 620 
Machilis, 345 
Mackerel, 456 
Macrobiotus Americanus, 340 
Macropus thetidis, 577 
Mactra lateralis, 229 
ovalis, 231 
Madrepora cervicornis, 82 
Meandrina, 80, 81, 84 
Magpie, 554 
Malacopoda, 335, 365 
Malapterurus electricus, 449 
Male fishes, obstetrical habits of, 
449, 461 
Mallotus villosus, 452 
Mammalia, anatomy of, 564 
characters of, 557, 628 
development of, 566 
ears of, 563 
hair of, 561 
horns of, 561 
limbs of, 569 
music of, 569 
sexual differences of, 566 
skeleton of, 558 
teeth of, 562 
Mammals, development of, 649 
Mammoth, 598 
