430 



INDEX. 



Mesethmoid, 158. 

 Mesoarium, 106, 

 Mesoblast, 6. 

 Mesocardium, 106, 180. 

 Mesocolon, 105. 

 Mesodactyla. 393. 

 Mesoderm, 7. 

 Mesogaster, 105. 

 Mesohippus, 395. 

 Mesomere, loi, 

 Mesonephric duct, 119. 

 Mesonephros, 116, 118. 

 Mesonychidas, 411. 

 Mesonyx, 411. 

 Mesoplodon, 409. 

 Mesopterygium, 175. 

 Mesorchium, 106. 

 Mesorectuin, 105, 

 Mesothelium, 8. 

 Mesothelial structures, loc. 

 Mesovarium, 106, 126. 

 Metacarpus, 176. 

 Metacoele, loi, 103. 

 Metacone, 365. 

 Metaconule, 365. 

 Metanephros, 116. 

 Metapoph}sis, 141. 

 Metapterygium, 175. 

 Metatarsus, 176. 

 Metazoa, i. 

 Metencephalon, 50. 

 MiacidsE, 411. 

 Mice, 390. 



Microchiroptera, 387. 

 Microconodon, 377. 

 Microgadus, 264, 

 Micromeres, 222. 

 Microptenis, 259. 

 Microsauria, 283. 

 Micropyle, 207. 

 Midas, 415. 

 Mid brain, 48. 

 Middle zone, loi. 

 Mid gut, 36. 

 Midshipman, 266. 

 Mi,k dentition, 20, 

 Milk glands, 91. 

 Milk line, 354. 

 Mink, 412, 

 Mixosaurus, 313. 

 Moa, 346. 

 Moccasin, 326. 

 Mela, 267. 

 Molars, 364. 



Mole rat, 390. 

 Mole-shrew, 385. 

 Moles, 385. 

 Molossus, 388. 

 Momotus, 348 

 Monacanthus. 266. 

 Monachus, 414- 

 Monasa, 348. 

 Mongoose, 412. 

 Monimostylica, 300. 

 Monitor, 320. 

 Monkeys, 415. 

 Monocondylia, 291. 

 Monodelpfaia, 381. 

 Monodon, 408. 

 Monophyodont, 366. 

 Monopneumonia. 272. 

 Monotremata, 376. 

 Moonfish, 263 

 Moose, 399, 

 Mordacia, 223. 

 Morgagui, sinus of, 29. 

 Mormyridae, 255. 

 Moropus, 396. 

 Mosasauridse, 322. 

 Mosasaums, 322. 

 Moschus, 399. 

 Motmot, 348. 

 Motor nerves, 46. 

 Mouse, 390. 

 Mound-bird, 350. 

 Mouth, 18. 

 Mud eel, 285. 

 Mud-minnow, 257. 

 Mud puppy, 285. 

 Mud turtle, 311. 

 Mugilidae, 262. 

 Mullets, 262. 

 Mullidse, 261. 

 Mu'.lus, 261. 



Multipolar nerve cells, 10. 

 Multituberculata, 377. 

 Mummichog, 257. 

 Muntjacs, 399. 

 Mursena, 257. 

 Murasnidae, 257. 

 Muridse, 390. 

 Murr}-, 257. 

 Mus, 390. 



Muscle, development of, 108. 

 Muscle plates, 109. 

 Muscular system, 107, 

 Muscular tissues, 12. 

 Muskaionge, 257. 



Musk deer, 399. 

 j Musk ox, 400. 



Musk rat, 390. 



Musk turtle, 311, 



Musophaga, 348. 



Mustela, 412, 



Mustelidse, 412. 



Mustelus, ^9. 



Mycetes, 416. 



Myelencephalon, 50. 



Myctodera, 285. 



Myelin, 11. 



Myliobatidae, 240. 



Mylodon, 383. 



Myocardium, 180. 



Myocomma, 103. 



Myoc'x'e, loi. 



Myodes, 390. 



Myogalidse, 385. 



Myomorpha, 390. 



Myopotamus, 391, 



Myoseptum, 103. 



Myotomes, loi, 108. 



Myotome zone, 101. 



Myoxidse, 390. 

 \ Myoxus, 390. 



Myrmecobius, 379. 



Myrmecophaga, 383. 



Myrmecophagidae, 383. 

 J Mystacoceti, 409. 



Myxine, 224. 

 , Myxinidas, 224. 



Myxinoidei, 224. 



Myzontes, 219. 



Xails, 99. 



Naja, 325. 

 ; Nandu, 345. 

 j Naosaurus, 306. 

 : Nare5, 76. 

 I Narwal, 408. 

 ! Nasal bone. 161, 

 1 Nasal capsules, 153. 

 i Nasal glands, 76. 

 I Nasua, 4x2. 

 i Nates, S3. 



Naucrates, 263, 

 I Naviculare, 177. 



Necrolemur, 415. 



Nectogale, 385. 



Nectunis, 285. 



Needle fish, 257. 



Nemopten'x, 2^4. 



Neobalaena, 410. 



