INDEX 



937 



Megalops, 285 



Melanerpes erythrocephalus, 395 

 Melanophores, 474 

 Melanoplus atlanis, 343 



femur-rubrum, 310 

 Melophagus ovinus, 330 

 Membranous labyrinth, 403. 530, 574 

 Memory, associative, 852 

 Mendel, Gregor J., 45, 821 

 Mendel's law, 821 

 Menetus dilatatus, 238 

 Meninges, 650 

 Menofoini, 676 

 Mentomeckelian bone, 520 

 Mentum, 305, 345 

 Mergansers, 589 

 Mermiria bivittata, 310 

 Meroblastic eggs, 546 

 Merozoites, 74 

 Merychippus, 870 

 Merzoites, 749 

 Mesenchyme. 165 

 Mesethmoid, 456, 643 

 Mesoblast cell. 211). 211 

 Jlesoderm, 117, 809 

 of frog, 536 

 parietal, 819 

 splanclinic, 815 

 Mesoglea. 132, 150. 151 

 Mesohippus, 874 

 Mesonephric tube. 464 

 Mesopterygium. 430 

 Mesorchium. 492, .572 

 Mesothelium, 201 

 Mesothorax, 305. 347, 3.57 

 Mesotubarium. 492 

 Mesovaria, 812 

 Mesovarium. 438, 573 

 Mesozoa, 120 

 Metabolism. 28. 54. 377 

 Metacarpals. 522 

 Metacercaria. 759 

 Metacrinus. 225 

 Metagenesis. 113, 135 

 Metamere, 211 

 Metameres, 194. 361 

 Metamerism. 375 



Metamorphosis. 308, 801 

 in acidia, 367 

 starfish, 232 



Metanephros, 397, 545 



Metaphase, 62, 63 



Metapleural folds. 370 



Metapterj'gium, 430 



Metargiope trifasciata, 290 



Metatarsal bones of frog, 522 

 tubeicles, toad, 540 



Metatheria, 619 



Metatliorax, 305. 347. 357 



Metazoa characteristics. 103 



Metazoan organization, 103 



Metridium, 140, 141 



Microcephalus, 664 



Microgametes. 74 



Microhyla, 486 



Micromeres. 534 



Micronuclel. 98 



Micropodiformes, order. 593 



Mocropogon undulatus. 453 



Microptci'us salmoides, 453 



Microsporidia, 73 



Midbrain of fish, 469 



Miescher's tube, 73 



Migration of animals. 716 

 airwavs. birds. 583 



Millepedes. 265 



Millepora, 136 



Millers, 327 



Millipede, 289 



Mlmus polyglottos, 594 

 Mind, 846 

 Mink, 638 

 Minnows, 450 



mud, 450 

 Miracidium, 756, 758, 759 

 Miridae, family, 318 

 Mirids, 318 

 Misumena vatia. 295 

 Mite, human itch. 738 

 Mites, 266 

 Mitochondria, 60 

 Mitosis, 62 

 Mnemiopsis, 157 

 Mockingbird, 594, 595 

 Mole, 619 

 Molgula, 361 



manhattensis, 365 

 reproduction, 366 

 Moilusca, 27 



classification, 256 

 economic relations, 255 

 internal morphology, 243 

 phylum. 236 

 Molluscoida. 27. 184 

 Mollusk shells. 771 

 Molt. 280. 601 



Monacanthidae. family, 455 

 Monarch butterfly, 326 



life histoiy, 328 

 Monaxon, 124 

 Monaxonida, order, 121 

 Moniezia, sheep tape, 763. 765 

 Monkeys, 635 

 Monocytes, 513 

 Monodelphia, 617 

 Monoecious condition. 112 

 Monogenea. 161 



subclass. 762 

 Monohybrid cross, 825 

 Monos.ga, 66 



Monotremata, suborder, 616 

 Mooneyes, 447 

 Moose, 630 

 Moray eels. 450 

 Momion cricket. 312 

 Morphology. 20 

 Morula, 807, 809 

 Mosaic vision, 277, 278 

 Mosquito fish, 80, 451 



life history. 329 

 Mosquitoes. 266 

 Mother-of-Pearl. 255 

 Moths. 266. 325 

 Motor cells. 400 

 end plates, 400 

 nerve root, 527 

 Mouse, 625 



Mouth parts of insects, 301 

 Mud hen, 591 



puppy. 487 

 Mugil curema, 452 

 Mugilidae. family, 452 

 Mulatta, 828 

 Mliller, Johannes. 43 

 Miillerian tube, 493 

 Mullets, 452 



Muraenidae, family. 450 

 Murex tenuispina, 241 

 Murgantia histrionica, 318 

 Mus. 625 



Musca dome?tica.330 

 Muscidae. family. 330 

 Muscle, actions of. 524 

 attachments, 524 

 involuntary, 524 

 Muscles of cat. 642. 644 

 of fish. 467 

 of hind limb, chicken, 611 



