696 



INDEX. 



dilatory system of, ib. ' respiratory 

 system of, ib. ; nervous system of, 54s ; 

 reproductive system of, ib. ; intepu- 

 mentary system of, 549 ; primary divi- 

 sions of, 550 ; orders of, 552, et seq. ; dis- 

 tribution of, in time. 638, et seq. 



Mammoth, 601, 602, 6 4 7. 



Manatee, 5S8, 570, 571. 



Manatidce, 570. 



Manatus, 533, 552, 570, 571. 



Mandibles, of Lobster, 224 ; of Arachnida, 

 255 ; of Myriapoda, 266 ; of Insecta, 270, 

 271 ; of Cephalopoda, 345, S54 ; of Verte- 

 brates, 376. 



Manidce, 569. 



Manis, 54a, 549, 569. 



Mantle, of Tunicata, 307 ; of Brachiopoda, 

 313 ; of Lamellibranchiata, 323 ; of Gas- 

 teropoda, 33') ; of Cephalopoda, 344 ; of 

 Nautilus, 353. 



Manubrium, 95, 96, 105, 111, 113. 



Mareca, 506. 



Marginal bodies, of Medusce, 111, 114 ; of 

 Lucernarida, 114, 119. 



Marg.nella, 339. 



Marmoset, 633. 



Marmot, 622. 



Marsipobranchii, 402 ; general characters 

 of, ib. et seq. ; families of, 403 ; distri- 

 bution of, in time, 427. 



Marsupial bones, 543, 555, 558. 



Marsupialia, 544, 548, 550, 551, 552 ; gene- 

 ral characters of, 557 ; families of, 559, 

 et seq. ; distribution of, in space, 557 ; 

 in time, 640, et. seq. 



Marsupites, 181. 



Mastax, 199. 



Mastodon, 600, 603, 646. 



Maxillae, of Lobster, 224 ; of Arachnida, 

 255 ; of Insecta, 270, 271. 



Maxillipedes, of Lobster, 224 ; of Centi- 

 pedes, 266. 



May-flies, 281. 



Meandrina, 136, 150. 



Measles, of Pig, 188 ; of Ox, ib. 



Medusidce, llo ; structure of, 111 ; exact 

 nature of, 112, et seq. 



Megaceros, 594, 645. 



Megaderma, 625. 



Megalonyx, 643, 649. 



Megalosaurus, 478. 



Megalotrocha, 198. 



Megapodidce, 517. 



Megaptera, 576. 



Megatherium, 643, 619. 



Melania, 3^9. 



Mdaniadee, 335, 339. 



Meleagris, 516. 



Meleagrince, 516. 



Meles, 610. 



Melicerta, 193,199, 201. 



Mel-iphagidce, 526. 



Mellivora, 610. 



Melobesia, 65. 



Melolontha, 291. 



Membrana nictitans (of Birds), 497; (of 



Mammals), 497, 5*9. 

 Menobranchus, 445, 437. 

 Menopoma, 435, 437. 

 Mentum, 270. 

 Mephitis, 611. 



Mergulus, 503. 



Meriones, 621. 



Meropidce, 528. 



Merostomata, 234 ; characters and divi- 

 sions of, 239. 



Merulidce, 526. 



Merycotherium, 650. 



Mesenteries (of Actlnozoa), 125, 126, 129, 

 132. 



Mesopodium, 330. 



Mesothorax, 268. 



Metapodium, 330. 



Metasoma, 344, 353. 



Metamorphosis, 36; of Myriapoda, 265; of 

 Insecta, 274 ; incomplete, ib. ; complete, 

 ib. 



Metastoma, of Lobster, 224 : of Eurypter- 

 ida,2il. 



Metathorax, 268. 



Metriophyllum, 151. 



Miamia, 292. 



Microconchus, 216. 



Microlestes, 6b9, 640, 6i7. 



Miliola, 60. 



Miliolida, 63. 



MillepoHdae, 152. 



Millipedes, 264, 26(3. 



Mimicry, 19. 



Mites, 259. 



Mitra, 339. 



Modeena, 112. 



Modiola, 327. 



Mole, 540, 543, 549, 627. 



Molgula, 310. 



Mollusca, 17, 293 ; general characters of, 

 293, et seq. ; digestive system of, 293 ; 

 circulatory system of, 294 ; respiratory 

 organs of, ib. ; nervous system of, 295 ; 

 sense-organs of, ib. ; reproduction of, 

 ib. ; shel} of, ib. et seq. ; divisions of, 

 297 ; distribution of, iu time, 318, 358. 



Mollusca Proper, 297 ; characters of, 320 ; 

 divisions of, ib. ; distribution of, in 

 time, 358, et seq. 



Molluscoida, 297 ; characters and divisions 

 of, 298, et seq. ; distribution of, in space, 

 318 ; in time, ib. 



Moloch. 465. 



Molothrus, 520. 



Momotus, 528. 



Monads, 38, 39. 



Monera, characters of, 54. 



Monitor, 464. 



Monkeys, 541, 542, 549, 554, 629. 



Monodelphia, 551. 



Monodon, 579. 



Monomorella, 317. 



Monomer 'osomata, 258. 



Monomyaria, 326. 



Monostega, 63. 



Monothalamia, 61. 



Monotremata, 53P, 540, 543, 548, 550, 551, 

 552 ; general characters of, 555 ; dis- 

 tribution of, in space, 556; in time, 

 640. 



Mopsea, 139, 152. 



Morphology, 12. 



Morrhua, 389, 392. 



Morse, 606. 



Mosasaurus, 467. 



MoschidiK, 591, 592. 



Moschus, 52. 



