INDEX. 



429 



Marsupium (of eye) , 340. 

 Marten, 412. 

 Mastodon, 401. 

 Mastodonsaurus, 284. 

 Matrix, 14. 



Maturation of egg, 209. 

 Maxillaris nerve, 61. 

 Maxillary, 162. 

 Meatus, auditory, 75. 

 Meckel's cartilage, 156. 

 Mecodonta, 285. 

 Mediastinum, 106. 

 Medulla oblongata, 50. 

 Medullary folds, 43. 

 Medullary plate, 43. 

 Medullary groove, 43. 

 Medullary sheath, II. 

 Medullated fibres, n. 

 Megachiroptera, 388. 

 Megaderma, 387, 

 Megalobatrachus, 285. 

 Megalonyx, 383. 

 Megalosaurus, 316. 

 Megalotriton, 286. 

 Megamys, 391. 

 Megapodius, 350. 

 Megaptera, 410. 

 Megatheriidae, 383. 

 Megatherium, 383. 

 Meissner's corpuscles, 69. 

 Melanerpeton, 283. 

 Meleagris, 350. 

 Meles, 412. 

 Mellivora, 412. 

 Merlucius, 264. 

 Melursus, 412. 

 Membrane bone, 15, 164. 

 Menhaden, 256. 

 Menidia, 262. 

 Meniscotheriidae, 393. 

 Menobranchus, 285. 

 Menopoma, 285. 

 Menura, 351. 

 Mephitis, 412. 

 Merkel's corpuscles, 68. 

 Meroblastic eggs, 210. 

 Merops, 348. 

 Merychius, 398. 

 Mesencephalon, 50. 

 Mesenchymatous structures, 



132. 



Mesenchyme, 8. 

 Mesenteric artery, 190. 

 Mesentery, 103. 



