712 



INDEX. 



JIan, embryology of, 650 

 origin of, 627 

 relation to apes, 634 

 skull, 626 

 varieties of, 627 



Manatus, 595 



Mandrill, 620 



Mauis, 580 



Mantis, 345 



Manubrium, 70 



Marine animals, distribution of, 

 664 



Marmoset, 619 



Marsupialia, 574 



Marsipobranchii, characters of, 

 409, 410 



Jlastodon giganteum, 599 



May fly; 347 



Mecaptera, 315 



Jleclielia ingens, 218 



Medusa, 59 



Megalops, 393 



Megapodiiis, 546 



Megatherium, 579 



Melanogrammus aeglefinus, 458 



Melipona, 365 



Mellitatesludiuata, 123 



Meloe angusticollis, 353 



Melospiza, 555 



Membranipora, 180, 186 



Memory of animals, 681 



Menhaden, 450 



MenobrancUus, 478 



Menopoma AUeghaniensis, 479 



Merostomata, 297, 306 



JMesenteries of polyps, 75 



Mesoderm, 6 



Mesogonislius chsetodon, 455 



Mesobippus, 602 



Mesozoa, 139 



Metabola, 366 



Metamorphosis, 651 



of Batrachia, 476 

 suppressed, 477, 485 



Metamorphosis, of Crustacea, 

 293 



of echinoderms. 105, 110, 

 113 

 Jletridium marginatum, 74 

 Miastor, 653 

 5Iicrosauria, 483, 483 

 Microstomum lineare, strobilation 



in, 145 

 Midas, 620 



Migrations of animals, 667 

 Millepedes, 336 

 Millepora alcicornis, 57 



nodosa, 57 

 Milnesium tardigradum, 361 

 Mimicry, protective, 675 

 Mimetes niger, 632 



pitbecus, 621 

 Mind, in animals, 683 

 Miohippus, 603 

 Mites, 841 

 Moa, 538 



Moccasin snake, 500 

 Molacanthus Pallasii, 463 

 Mola rotunda, 462 

 Mole, 587 

 IMolgula, 387 



Mollusca, development of, 333, 

 243 



structure of, 230 

 Molluscs, edible, 248 

 Monads, 31 

 Monas termo, 31 

 Monera, 18, 20 

 iSIoney, shells used as, 369 

 Monitor, 504 

 Monkey, 619 

 Monocaulus, 60 

 Monodelphia, 571, 577, 629 

 Monodon monoceros, 594 

 Monograptus, 62 

 Monostomum, development of, 



149 

 ilonotremes, 571 



