GENERAL INDEX 529 
Metasoma, 52, 387, 411 
Metastoma, 239, 246, 272, 289, 342, 458 
Metazoa, 444, 459, 471, 472 
Meynert’s bundle, 48, 77 
Mollusca, dominance of, 23 
Mouth, old, or paleostoma, 14, 317, 322, 440, 458 
» vertebrate, 317 
Muco-cartilage, v. Cartilage 
Muscles, antagonistic, 447 
», branchial, 170 
» connection of, with central nervous system, 464 
» eye, and their nerves, 263 
»  prosomatic, 243, 247 
» phylogeny of origin of skeletal, 478 
» rudimentary, in Ammoccetes, 289 
» somatic trunk, origin of, 406 
» Striated, 20, 155 
» tubular, of Ammoccstes, 309 
»  unstriped, 20, 447, 491 
», Visceral and parietal, 155, 172 
»  veno-pericardial of Limulus and Scorpion, 177, 297, 309 
Muscle-spindles, 267 
Mygalide, stomach, 109 
8 segmentation, 249, 306 
Myomeres, 262, 337, 414, 479 
Myotomes, 382, 337, 338, 391, 407, 408 
Mysis, eyes, 100 
», ductless glands, 422 
Myxine, 220, 392, 402, 419 
NEBALIA, 144, 422 
Nemertina, 475 
Nephridia, 395, 421, 429 
Nephroccele, 430 
Nephrotome, 393 
Nerves, abducens, 155, 263, 266 
» auditory, 356, 376 
» autonomic, 3 
» facial, 155, 156, 186, 188, 192, 311, 356, 378 
is » ramus branchialis profundus, 311 
» to flabellum, in Limulus, 361, 375 
» glossopharyngeal, 155, 156, 186, 356 
» hypoglossal, 156 
» inhibitory, 447 
»  inedullation of, 20, 267, 467, 477 
,  occulomotor, 155, 234, 263, 274 
» olfactory, 229 
5, optic, 101, 104 
5 », of pineal eye, 79 
» origin of ganglia of cranial and spinal, 281 
», to pecten of Scorpion, 375, 376 
» preganglionic, 2 
