712 
Man, embryology of, 650 
origin of, 627 
relation to apes, 624 
skull, 626 
varieties of, 627 
Manatus, 595 
Mandrill, 620 
Manis, 580 
Mantis, 345 
Manubrium, 70 
Marine animals, distribution of, 
664 
Marmoset, 619 
Marsupialia, 574 
Marsipobranchii, characters of, 
409, 410 
Mastodon giganteum, 599 
May fly, 347 
Mecoptera, 315 
Meckelia ingens, 156 
Medusa, 59 
Megalops, 293 
Megapodius, 546 
Megatherium, 579 
Melanogrammus eglefinus, 458 
Melipona, 365 
Mellita testudinata, 205 
Melo# angusticollis, 353 
Melospiza, 555 
Membranipora, 138, 144 
Memory of animals, 681 
Menhaden, 450 
Menobranchus, 478 
Menopoma Alleghaniensis, 479 
Merostomata, 297, 306 
Mesenteries of polyps, 75 
Mesoderm, 6 
Mesogonistius cheetodon, 455 
Mesohippus, 602 
Mesozou, 97 
Metabola, 366 
Metamorphosis, 651 
of Batrachia, 476 
suppressed, 477, 485 
ANDEX. 
| Metamorphosis, of crustacea, 
293 
of echinoderms, 187, 192, 
194 
| Metridium marginatum, 74 
‘| Miastor, 653 
Microsauria, 482, 483 
Microstomum lineare, strobilation 
in, 108 
Midas, 620 
Migrations of animals, 667 
Millepedes, 336 
Millepora alcicornis, 57 
nodosa, 57 
Milnesium tardigradum, 361 
Mimicry, protective, 675 
Mimetes niger, 622 
pithecus, 621 
Mind, in animals, 682 
Miohippus, 603 
Mites, 341 
Moa, 538 
Moccasin snake, 500 
Molacanthus Pallasii, 463 
Mola rotunda, 462 
Mole, 587 
Molgula, 399 
Mollusca, development of, 233, 
243 
structure of, 220 
Molluscs, edible, 248 
Monads, 31 
Monas termo, 31 
Monera, 18, 20 
Money, shells used as, 269 
Monitor, 504 
Monkey, 619 
Monocaulus, 60 
Monodelphia, 571, 577, 629 
Monodon monoceros, 594 
Monograptus, 62 
Monostomum, development of, 
107 
Monotremes, 571 
