INDEX 



479 



May- flies, 194. 



May-fly, nymph of, *IQ7. 



Medusa. *ioi. 



Megalobatrachus, 298. 



Mc-gascops asio. *352, 353. 



Mt-lancrpt's t-rythrocephalus, 355. 



Melanerpes fonnicivonis, 356. 



Melanoplus sp., ear of, *i8j; struc- 

 ture and life-history of, 157. 



Jlfe/anoplus vibiftatns, 157* 



Mc'lanoplns differentialis, 157. 



Melanoplns femur- rubrum, 1 5 7 . * 1 5 8. 



Melanoplns spretns, 157. 



Mcleagrina margaritifera, 250. 



ML -rn la mi gr atari a propinqua. *368. 



Metamorphosis, complete, I7 1 ? 188, 

 189; incomplete, 171, 189. 



Metazoa, defined, 43. 



Mice, 391. 



Micropleriis dolomien, 282. 



MicroptiTus salmoides, 282. 



Migration of birds, 367. 



Mimicrv, 430. 



Millipeds, 226. 



Mite, cheese, *23O. 



Mites, 229. 



Modifications of structure and func- 

 tion, 29. 



Moles, 391. 



Mollusca, 239. 



Molluscs, 239; classification of, 246; 

 development of, 246 ; form and 

 structure of, 245. 



Molting, 361; of birds, 361. 



Monitor, 318. 



Monkey, *4OO. 



Momomeriiun minutiitn, *22\. 



Monster, Gila, *3I7- 



Moose, *385, 396. 



Morphology, defined, 3. 



Mosquito, 202, *2O3. 



Mosquitoes, 201; and malaria, 205 ; 

 and yellow fever, 205. 



Moth, forest tent-caterpillar, life- 

 history of, *2C7. 



Moths, 205. 



Mourning dove, 351. 



Mouse, life-history and habits of, 

 379; structure of, 373. 



Mud-eel, 297. 



Mud-hen, 349- 



Mud-puppies, 297. 



Mud-turtle. 313. 



Multiplication of one-celled animals. 

 59; of many- celled animals, 61. 



Murres. *344- 



Muscles of toad, structure of, 41. 

 ^flls deciimanus, 391. 

 Mus Diiisculus, structure of, 373. 

 Mus rat tits, 391. 

 Musk-rat, 391. 



Mussel, fresh-water, life-history and 

 habits of, 243; structure of, 



239- 



Mya arenaria, 247. 

 Afyotis siibiilatus, 392. 

 Myriapoda. 144, 226. 

 Mytilus californiamts, *248. 

 Myxiitc, 279. 



Names, scientific, 68. 

 Xarcobatis, 281. 

 \atrix sipedon, 320. 

 Nautilus, 255; pearly. 258. 

 Xantilus pompilhis, 258. 

 Necturus. 297. 298. 

 Nemathelminthes, 140. 

 Neotoma pennsylvanica, 391. 

 Nereid, *I34- 

 Nereis sp., *I34. 

 Nesting of birds, 366. 

 Nest of oriole. *365. 

 Nettion carolinense, 347-] 

 Night-hawk, 356. 

 Night-heron, 348. 

 Nirnnts prastans, * 194. ' 

 Non-calcarea, 91. 

 Notes, 447, 448. 

 Notochord, 259. 

 Notonecta, 197, 199. 

 Nucleus, 38. 



Nudibranchs, 252, *254. 

 A'nmenius. longirostris, 350. 

 Nyctea nyctea, 353. 

 Nycticorax, 348. 



Octopi, 255. 



Octopods, 256. 



Odocoileus americanus, 396. 



Odonata. 194. 



Oligochaetae, 136. 



Olor, 347. 



Ominatostrephes californifa. *2tfl. 



Oncorhynchus tschawtsc/m, 283. 



One-celled animals, multiplication 



of, 57- 

 Ooze, foraminifera, 81 ; radiolaria, 



81. 

 Opheosaurtis vcntralis, 317. 



