540 



INDEX 



Limpet, 260 



Limulus, 306 



Lion, 454 



Littoral fauna, 135 



Littorina, 260 



Liver-fluke, 195, 196 



Lizards, 393 



Lobster, 293, 294 



Locomotion, 75 



Locomotor organs protozoa, 154; 

 porifera, 169; coelenterata, 182; echi- 

 noderms, 213; annulata, 228; mol- 

 lusks, 247; arthropods, 280; fishes, 

 359-363, amphibia, 378; reptiles, 

 386; birds, 401; mammals, 430 



Locust-borers, 304 



Locusts, 297 



Longipennes, 414 ^ 



Lophobranchii, 375 



Lophophore, 202 



Lumbar vertebrae, 327 



Lumbricus, 222 



Lung-fishes, 373 



Lungs, 69, 335 



Lymph, 58 



Lymphatics, 445 



Macromere, 233, 254 



Madreporic body, 214 



Malacostraca, 293 



Malaria, 162 



Mallophaga, 299 



Malpighian tubule, 281 



Mammals, 142 



Mammary glands, 441 



Mammoth, 454 



Man, 459, ch. XXV 



Man, 465; types of, 473 



Manatee, 452 



Mandible, 263, 273 



Mantle, 247 



Marsupials, 440, 439, 450 



Marsupium, 439, 448 



Marten, 454 



Mastodon, 454 



Maturation (of ovum), 32, 33, 34 



Maxilla, 267, 273 



Maxillary palpus, 273 



Maxillipeds, 267 



May-flies, 298 



Medical uses of animals, 501 



Medulla oblongata, 348, 350 



Medullary sheath (nerve), 60, 61 



Medusa-type, 178 



Megalops, 288 



Mendel's experiments, 489 



Mendel's laws, 492 



Mental life of man, 469 



Mesenchyma (mesoglcea), 166 



Mesenteron, 67, 331 



Mesentery, 320 



Mesoblast (see mesoderm), 233 



Mesoderm, 40 



Mesothorax, 272 



Mesozoa, 203 



Metabolism, 66 



Metamere, 96 



Metamorphosis worms, 195, 196; 



echinoderms, 218; arthropods, "287; 



amphibia, 379, 380 

 Metaphase, 24 

 Metapleure, 313 

 Metathorax, 272 

 Metazoa, 147-485 

 Metridium, 175 

 Mice, 457 



Micromeres, 233, 254 

 Micropyle, 36 

 Microstomum, 194 

 Migration, 105, 134; of birds, 432 

 Millipedes, 296 

 Mimicry, 128, 390 

 Mimus, 427 

 Mink, 454 

 Mites, 309 



Mitotic cell-division, 24, 25 

 Mniotiltidae, 430 

 Mocking bird, 427 

 Modern birds, 410 

 Molar teeth, 443 

 Moles, 451 

 Mollusca, 239-145 

 Molluscoidea, 202 

 Monkeys, 459 

 Monodelphia, 450 

 Monomya, 259 

 Monotremata, 439, 449 

 Morphology defined, 3 



