INDEX 



499 



Labyrinthodont teeth, 261, 431 



Lacertilia, 441 



Lachrymal, 69, 73, 300 



Lacteal, 336, 345 



Lacunae, 232 



Lamina orbito-nasalis, 281 



— terminalis, 41, 208 

 Larvacea, 425 

 Larynx, 146, 183 



Lateral abdominal vein, 58, 86, 219 



— ganglia, 385 

 Lateralis system, 367 

 Lateral-line ossicles, 74 



— system, 26, 38, 74, 90, 285, 286, 

 367, 396 



, devpt. of, 194 



lateral mesocardia, 187 



— plate, 4, 26, 181, 270 

 Laterosphenoid, 68, 73, 120, 295, 



300 

 Lemuroidea, 460 

 Lepidosiren, 339, 352, 428 

 Lepidosteoid scale, 259 

 Lepidosteus, 259, 429 

 Lepidotrichia, 66, 73, 258, 260, 301 

 Lesser omentum, 115, 272 



— superficial petrosal, 387 

 Limb, devpt. of, 222 



— , pentadactyl, 89, 314 



Lip, 143 



Liver, 8, 30, 51 



— , devpt. of, 184 



Lophodont teeth, 268 



Lower layer, 200, 229, 243 



Loxomma, 285, 431 



Lucifuga, 394 



Lunar, 93, 301 



Lung, 83, 95, 109, 127, 146, 339, 



43i 



— , devpt. of, 184 

 Lymph, 336 

 Lymph-gland, 149 

 Lymph-heart, 336 



Macropus, 456 



Macroscelides, 470 



Macula lutea, 394, 472 



Magnum, 141, 301 



Malleus, 138, 298, 300 



Malpighian corpuscle, 31, 11 1, 189, 



221, 349 

 Mammary glands, 134, 353 

 Manatus, neck vertebras of, 307 

 Mandibular arch, 47, 49, 356 



— segment, 36, 49 



— somite, 354 

 Maniplies, 346 



Marmoset, brain of, 472 

 Marrow, of bone, 335 

 Marsupials, 454 

 — , placenta of, 248 

 — , teeth of, 265 

 — , yolk of, 247 

 Marsupium, 353, 454 

 Mastodon, 458 

 Maxilla, 71, 73, 293, 300 

 Meckel's cartilage, 48, 71, 281 

 Mediastinal septum, 143 

 Medulla oblongata, 42, 370 

 Megapodes, 353, 449 

 Meibomian glands, 134 

 Meissner's plexus, 387 

 Membrane-bone, 66, 72, 258 

 Meningeal membranes, 155 

 Meroblastic cleavage, 199, 240 

 Mesencephalon, 41 

 Mesethmoid, 68, 73, 135, 300 

 Mesocolon, 276 

 Mesodermal pouch, 165, 276 

 Mesohippus, 457 

 Mesometrium, 228, 276 

 Mesonephric duct, 33, 55, 189, 220 

 Mesonephros, 33, 55, 98, in, 189, 



221, 349 

 Mesopterygium, 51 

 Mesorchium, 276 

 Mesotarsal joint, 107, 124, 4 1-6 

 Mesovarium, 276 

 Metacarpal, 93, 301 

 Metameric segmentation, 165, 181, 



206, 478 . 

 Metamorphosis, 196 

 Metanephros, in, 221, 350 

 Metapleural fold, 8, 12, 170 

 Metapterygium, 51 

 Metapterygoid, 71, 73, 300 

 Metatarsal, 93, 107, 322, 442 

 Metencephalon, 41 

 Metotic somites, 355 

 Midbrain, 25, 41 

 Middle ear, 113 

 Miohippus, 457 

 Mitral valve, 147 

 Mixed nerve, 43, 47 

 Mixosaurus, 441 

 Moa, 450 

 Moeritherium, 458 

 Molar, 139, 263 

 Monimostylic skull, 294 

 Monotremes, 454 

 — , brain of, 380 

 — , mammary glands of, 353 

 — , pectoral girdle of, 317 

 — , yolk of, 247 



