INDEX. 



627 



Muscular System of — 



Insects 



Mammals 



Myxine 



Peripatus 



Petromyzon 



Pigeon 



Sepia . 



Skate 



Snakes 



Starfish 



Vertebrates 

 Muscular tissue . 

 Musk-deer . 

 „ -glands 

 ,, -rat 

 Mussel, Edible . 



„ Horse 

 Mustela 

 Mustelidae . 

 Mustelus . . .41 



„ "Placenta "of 

 Mya . 

 Mycetes 

 Mycetozoa . 

 Myelencephalon . 

 Mygale 

 Myodes 

 Myogale 

 Myomeres . 

 Myomorpha 

 Myopotamus 

 Myotomes of Amphioxus 

 Myoxidse 

 Jiyoxus 

 Myriopoda . 

 Myimecobius 

 Myrmecophagidse 

 Myrmecophj^us 

 Mysis . 

 Mystacoceti 



Mytilus . . . 303, 

 Myxidium . 

 Myxine 



,, and Petromyzon con 



trasted 

 Myxospongise 

 Myzostomata 



Nais . 



261 

 527 

 403 

 252 

 405 

 507 



333 

 416 



479 

 204 



371 

 3S 

 579 

 579 

 589 

 313 

 313 

 592 

 592 

 > 427 

 491 



313 

 600 

 109 



379 

 292 



589 

 594 

 366 

 589 

 589 

 366 

 589 

 589 

 256 

 570 

 573 

 573 

 249 

 587 

 313 

 III 

 402 



409 

 116 



185 



PAGE 



Naja 482 



Narcomedusae . , .170 

 Narwhal .... 587 

 Nasal Capsule . . . 372 

 Nasalis .... 601 

 Natural Selection . . 84 

 Nautilus . 300, 340, 342, 343 

 Nautilidee .... 343 

 Naviculae . . . .108 

 Nearctic region ... 77 

 Nebalia .... 248 

 Necturus .... 466 

 Nemathelminthes . . 161 

 Nematocysts . . .127 

 Nematoda . . . .161 

 Nemerteans or Nemertini . 159 

 ,, Classification of 159 

 ,, Relations of, to 



Vertebrates, 160, 349 



Nemertes 

 Neo-crinoidea 

 Neomenia . 

 Neotropical region 

 Nephelis 

 Nephridioblast 



Nephridium of Vertebrates 



Nephrops 



Nephrostoma of kidney 



tubules 

 Nephthys . 

 Nereis 

 Nerve Cells 

 ,, Fibres 

 ,, Tissue 

 Nerves, Cranial . 

 ,, Morphology of 

 „ in Actinia 

 ,, in Hydra 

 , , Origin of 

 ,, Structure of . 

 Nervous System of — 

 , , Amphioxus 

 ,, Anodonta . 

 , , Arenicola . 

 ,, Ascidian 

 ,, Aurelia 

 „ Balanoglossus 

 ,, Birds . 

 ,, Cephalopoda 

 ,, Chsetognatha 



160 

 218 

 327 

 78 

 196 

 174-175 



314. 



397 

 250 



397 



186 



186 



37 



37 



36 



381 



382 



36 



36 



36 



37 



366 

 306 

 180 



359 

 132 



353 

 510 

 330 

 196 



