936 



Lepus, 626 



Lestes uncatus, 321 



Leucocytes. 393 



of frog. 503, 513 

 Leucosolenia. 120 

 Levator muscle, 524 

 Leydig, duct of, 493 

 Libinia, spider crab, 772 

 Lice, 266. 333 

 Life, attributes of. 30 



history, ameiurus, 470 

 housefly. 330 

 lampiey. 421 

 monarch butterfly. 328 

 mosquito, 329 



zones, 713. 714 

 Ligula. 305 

 Ligulae. 345 

 Limacina australis. 241 

 Limulus Polyphemus, 299 

 Lineus socialis, 162 

 Liuin, 59 



net, 61 

 Linkage, 832 

 Linneas, 42 

 Lion, 629 

 Lionotus, 71 



Liopelmidae, family, 485 

 Lipase. 384 

 Lipophores. 474 

 Liriope, 136 



Litanseutria obscura, 318 

 Littoral zone. 713, 769 

 Liver, function, 386 

 Lizard, alligator, 552 



collared. 552 



fishes, 450 



horned, 552 

 Lizards, 411, 551 



night, .'554 



sand, 554 



worm, 555 

 Llamas. 630 

 "Lobster claw," 659. 837 

 Lobsters, 265 

 Locust. 343 



Locustidae. family, 315 

 Loligo, 2.58 



brevipennis, 2.57. 260 

 Long-horned wood beetles. 324 

 Loons. 586 



Lophiidae, family, 455 

 Lophophore, 185, 186, 188 

 Lovebirds, 591 

 Lower jaw of frog, 520 

 Loxodonta africana, elephant, 634 

 Lubber grasshopper, western. 302 

 Lucernaria. 137 

 Lucunae. 107 

 Lumbricus. 195 



terrestris. 199 

 Lungflshes. 455 

 Lutein, 676 



Lntinnidae. family. 454 

 Lutianus campechanus. 454 

 Lycosa. 295 

 Lycosidae, family, 295 

 Lygaeidae, family, 318 

 Lygus pratensis, 318 

 Lymnaea, 242 



bulimoides, 256 

 techella, 238 



palustris. 237 



stagnalis, 238 

 Lymph, 108 



Lymphatic system, 502, 513 

 Lymphocytes, 513 

 Lynx, 629 

 ^L-yre snake, 556 



INDEX 





M 



Macaca sylvana, 636 

 Macaque monkey, 636 

 Macaws. 591 

 Machilidae, family, 310 

 Machilis orbitalis, 310 

 Mackerels. 453 



Spanish. 452 

 Macroccphalus. 664 

 Macrogametes. 74. 112 

 Macromeres. 534 

 Macroperipatis, 288 

 Madrepora. 142 

 Madreporaria. order. 142 

 Madrepoiic plate. 218 

 Madreporite, 217, 220, 221. 223. 226, 2L's, 



230. 231 

 Magellania. 188 

 Maggots, 330 



Malacostraca, subclass, 265 

 Malaria, 74, 79, 748 

 Malformations, 654 

 Malleus, 403 



Mallopliaga, order, 266, 333 

 Malpighi, 40, 49 

 Malpighian bodies, 606 



corpuscles, 398, 492 



tubules, 110. 286, 352 

 Malthus' law, 885 

 Mammalia, 411 



class, 616 



classification, 616 



economic relations, 637 

 Mammalian development, 812 

 Mammary gland, 653 



glands, 639 

 Mammogenic hormone, 678 

 Man, 6^5 

 Manatee, 634 

 Mandrill, 636 

 Man-eater shark, 422 

 Maniliin, human, 109 

 Mantidae, family, 318 

 Mantispids, 322 

 Mantle, 365 



cavity, 250 

 Manubrium, 131, 138 

 Manus, 522 

 Marine Biological Laboratory, 43 



zoology, 766 

 Marmosets, 635 



Marmota monax, woodchuck, 622 

 Marsupia. 253 

 Marsupial frogs, 480 



pouch, 61S, 619 

 Marsupialia, order, 619 

 Marsupials, 617 

 Martins, 595 

 Mastax, 189 

 Mastigamoeba, 66 

 Mastigophora, 66 



class, 81 

 Mastodonsaurus, 473 

 Mating among defectives, 839 

 Maturation of germ cells. 113 

 Maxillae, 270. 357 

 Maxillipeds, 269, 270 

 May beetles. 354 

 Mayflies, 265. 319, 321 

 Meantes, suborder, 485 

 Meckel's cartilage, 520 

 Mecoptera, order, 266, 333 

 Mediastinum, 657 

 Medulla oblongata, 435, 607 

 of flsh. 469 

 of frog, 526 

 Medusae, 113, 132. 133. 134 

 Megalopidae, family, 447 



I 

 I 



