INDEX. 



369 



Manatee, 298. 



Manis, 286. 



Mantle, 167, 175, 176, 179, 188. 



Manubrium, 64, 65, 68, 76. 



Marginal bodies, of Medusidce, 76 ; of Lu- 

 cernarida, 81. 



Marmoset, 315. 



Marmot, 312. 



Marsipobranchii, 214; characters of, 216. 



Marsupialia, 287 ; characters of, 289. 



Marten, 277. 



May-flies, 156. 



Measles, of pig, 111. 



Medusae, naked-eyed, 74, 76; hidden-eyed, 

 74, 81. 



Medusidce,, 74, 75. 



Medusoid buds, of Hydrozoa, 64, 65, 68, 76. 



Megapodidce, 272. 



Meleagris, 272. 



Meles, 308. 



Melicerta, 116. 



Meliphagidce, 276. 



Mephitis, 808. 



Meropidcz, 277. 



Merostomata, 133. 



MeruUdoB, 276. 



Mesenteries, of Actinosoa, 84, 87. 



Metamorphoses of Insects, 150, 151. 



Mice, 311. 



Miliola, 33, 34, 3T. 



Millipedes, 144, 145. 



Mink, 308. 



Mites, 141. 



Modeeria. 75. 



Mole, 314. 



Mollusea, 15; general characters of, 164; 

 shell of, 166; divisions of, 167. 



Mollusea Proper, characters of, 167: di- 

 visions of, 176-194. 



Molluscoida, characters of, 167; divisions 

 of, 168-175. 



Monera, 29. 



Monitors, 246. 



Monkeys, 315. 



Monothalamous shells (Foraminifera), 35. 



Monotremata. 287 ; characters o$ 288. 



Moose, 301. 



Morphology, 10. 



Morse, 807. 



Moths, 159, 160. 



Mound-birds, 272. 



MugilidcK, 219. 



Multivalve shells, 167, 182. 



Murcenidce, 219. 



Muridae, 311. 



Musca, 159. 



Muscicapidce, 276. 



Musk-ox, 303. 



Musquash, 311. 



MusteUdoR, 308. 



Mya, 177, 180. 



Mycetes, 316. 



Myoxidw, 311. 



Myriapoda, 127 ; general characters of, 144. 



Myrmecophaga, 292. 



Myrmeleo, 156. 



Myxine, 216. 



Myxinidce, 216. 



Myxinoids, 213, 216, 224, 



Naididae, 122, 123. 



Naja, 244, 245. 



Narwhal, 296. 



Namta, 308. 



Natatores, 265; characters of, 266. 



Nautiloid shells (Foraminifera), 86. 



Nautilus, Pearly, 187-190, 192, 193; Paper, 



187, 188, 190, 191. 

 Nectocalyces, 70, 71. 



Nematoda, 109 ; general characters of, 114. 

 NemertidcK, 113. 

 Nervures, 146. 

 Newoptera, 156. 

 Night-heron, 269. 

 Noctiluca, 49. 

 Nodosaria, 34, 85. 

 Nucleolus, of Paramoecitvm, 47. 

 Nucleus, of Protozoa, 26 ; of Amoeba, 32 ; 



of Paramoecium, 47. 

 Nitdibranchiata, 184. 

 Jfiimenius, 269. 

 Numida, 272. 

 Nummulites, 37, 88. 

 Nummulitic Limestone, 87. 

 Nycticebidce, 316. 



Oceania Hydrozoa, 70. 



Octopoda, 188, 191. 



Octopus, 191. 



Odontoeeti, 295. 



Odontophore, 165, 181, 186, 188. 



Oligochceta, 121 ; characters of, 122. 



Omnivora (Ungulatd), 298. 



Oniscus, 133. 



Operculum (of MoUusks), 181; (of Fishes), 



Ophidia, 237; characters of, 241-244. 



Ophiocoma, 102. 



Ophiomorpha, 226. 



Ophisaurus, 245. 



Ophiura, 102. 



Ophiuroidea, 96; characters of, 101-103. 



Opossum, 290, 291. 



Orang-outan, 818. 



Organ-pipe Coral, 91. 



Organs of the mouth of Insects, 147. 



Ornithorhynchus, 288, 289. 



Orthoceras, 193, 194. 



Orthoptera, 155. 



Ortyx, 272. 



Orycteropus, 293. 



Oscula, of Sponges, 41, 42. 



Osteolepis, 221. 



Ostraciontidce, 220. 



Ostracoda, 135, 136. 



Ostrich, 254, 258, 269, 270. 



Otter, 308. 



Ovarian vesicles, of Sertularida, 68. 



Ovidce, 303. 

 Ovipositor, 147, 160. 

 Ovis, 303. 

 Owls, 278. 

 Oxen, 303. 

 Owyuris, 115. 

 Oyster-catcher, 269. 



Paca, 311. 

 Paguridce, 131. 

 Pallial line, 178, 179. 

 Pallial sinus, 179. 



