742 



INDEX 



Mollusca, 284; classification of, 323 



Molpadidae, 360 



Mongol, 714 



Monkey, 708, 709, 710, 712, 713 



Monocystis, 44, 48 



Monogenea, 103, 112 



Monopneumona, 518 



Moose, 698 



Morphology, 10 



Moschites, 312 



Moschns, 694 



Mosquito, 245, 258 



Moth, 6, 175, 248, 249, 250, 258 



Mother-cyst, 30 



Mother-of-pearl, 299 



Motor nerves, 425, 426 



Motor oculi, 425 



Motor peripheral nerve, 151 



Mound-builders, 630 



Mouth, 38 



Mouth-angles, 343; -cavity, 136; 



-papillae, 343 

 Mouth-appendages, of Astacus, 183 ; of 



Gammarus, 222; of Insects, 235, 244 

 Movements, 2, 3 ; of animals, 10 

 Mucous canals, 426^-- 

 Mucous glands, 295 

 Mud-puppy, 542 

 Mud turtles, 597 

 Mugil, 514 

 Miiller's larva, 99 

 Mullus, 515 

 Multicellular, 30, 52 

 Multiplication, 1, 5 

 Muridae, 701, 703 

 Mm, 703, 725 

 Musca, 245, 258, 282 

 Muscardinus, 704, 725 

 Muscle, 6; of Arthropods, 201; of 



Lamellibranchs, 300; of Urodela, 527 

 Muscle-cell ofLumbricus, 152 

 Muscle-plate, 417 

 Musculo-cutaneous vein, 536 

 Musk-lamprey, 444 

 Musk-ox, 697, 697 

 Musk-rat, 705 

 Musquash, 704 

 Mussel, 284, 298 

 Mustela, 677, 721 

 Mustelidae, 676, 677, 678, 721 / 

 Mustelus, 435 

 Mya, 308 



Mycetozoa, 18, 27, 28, 46 

 Myelin, 417 

 Mylohyoid, 527 

 Myocoel, 395 

 Myodocopa, 209, 277 

 Myo-epithelial, 57 

 Myogale, 672, 673, 720 

 Myonemes, 33, 34, 86 

 Myotome, 393 

 Myoxipae, 701, 704 



Myriapoda, 175, 228, 280 

 Myrmecobius, 662, 663 

 Myrmecophaga, 719 

 Myrmecophagidae, 666, 668, 719 

 Myrmeleon, 254, 281 

 Mysidacea, 278 

 Mysis, 216, 217, 278 

 Mystacoceti, 681, 682, 722 

 Mytilus, 308, 324 

 Myxine, 449 

 Myxinoidea, 448, 449 

 Myxomycetes, 28 



Nacreous layer, 299 



Narcomedusae, 66, 75, 82 



Naris, 526, 599 



Narwhal, 653 



Nasals, 531 



Natterjack, 545, 559 



Natural selection, 12 



Nauplius, 204, 215, 216 



Nautilus, 242, 287, 297, 315, 321, 322, 

 325 



Neapolitan coral, 74 



Nebalia, 215, 278 



Neck, 122 ; of Birds, 624 



Nactocalyces, 67 



Necturus, 542, 561 



Negro, 714 



Nematocyst, 53 



Nernatoda, 127 



Nemertinea, 115, 121 



Neome'hia, 325 



Neornithes, 633 



Neosporidia, 47 



Nepa, 257 



Nephelis, 165, 166 



Nephridium, of Amphioxus, 399, 401 ; of 

 Hirudo, 161 ; of Lumbricus, 139, 

 147 ; of Nemertines, 115 ; of Platy- 

 helminthes, 94, 105 ; of Eotifers, 123 



Nephrostome, 147 



Nephrotome, 439, 440 



Nereis, 158, 159, 166 



Nerve-cells, 56, 57 



Nerve-ring, 62, 64, 335 



Nerves, 7 ; cranial, 424 ; 1st to 10th, 425 



Nervous system, of Arthropods, 196, 

 242, 265 ; of Brachiopods, 373 ; of 

 Cephalopods, 317 ; of Chaetognatha, 

 382; of Echinoderms, 335, 364; 

 functions of, 148; of Gastropods, 

 291; of Haliotis, 294; of Helix, 291, 

 292 ; of Lamellibranchiata, 307 ; of 

 Lumbricus, 149 ; minute structure of, 

 417 ; of Nematodes, 129 ; of Nemer- 

 tines, 115 ; of Platyhelminthes, 96, 

 102, 103; of Eotifers, 123; of Sepia, 

 319, 320 ; of Vertebrates, 388, 397, 

 404, 417, 424, 538, 582 



Nervous threads, 62 



Nervures, 246 



