488 



INDEX 



Nelsonia, 201 



Nemorrhaedus, 83, 106 



Nenia (see Clausilia). 



Neocyclotus, 268 



Neofiber, 64, 182 



Neomylodon (see Grypotherium) . 



Neotomodon, 201 



Nephila, clavipes, 190 ; clavata, 191 



Nesodon, 399 



Nesolagus, 225 



Nesomimus, 301, 315 



Nesopelia, 301 



Nesoryzomys, indefessus, 299 ; ?wzr- 

 boroughi, 299 



Nesospiza, 393 



Neuroptera of Florida, 178 ; of Cen- 

 tral America, 258 ; of Antilles, 289 



Neii.rotrichus, 321 ; 0i&6*t, 201 



Newfoundland, survival of fauna from 

 pre-glacial times, 41 ; geological 

 history, 55 ; fauna of, 56 



Newportia, 350 



NEWTON, Falkland island fossils, 430 



Nicaragua, Lake, fauna of, 240 



Nicoletietta, 258 



Nome, marine gravels at, 97 



Nonionina depressula, 47 



North-Eastern States, reptiles, 123 

 135 ; amphibians, 135 139 ; flora, 

 139141 ; mammals, 141143 



NORDENSXIOLD, on Mastodons, 408 



Notiodrilus, 412 ; bovei, 431 ; falc- 

 landicus, 431 



Notiosorex, 201 



Notostylops, 400402 



Notropis, cornutos, 50 ; atherinoides, 

 50 



Nova Scotia, land-bird fauna, 56 



Nycterinus, 215 



Nysius, 391 



Ocean floor, composition of, between 

 America and Galapagos, 332 



Oceanodroma cryptoleucura, 302 



Ochotona collaris, 92 



Octodontidae, 371 



Odocoileus, origin of, 107110, 396; 

 hemionus, 107 ; virginianus, 108, 

 396 ; columbianus, 108, avius 109 



Odonata, 258 



Oeneis semidea, 36, 38 



Oleacinae, 272 



" Olm," 136 



Oniscus asellus, 39 



Oniticellus, 215 



Onychodectes, 244 



Onychomys, 201 



Onychophora, 345347, 432 



tfpeas, 380, 385, 393 



Ophisaurus, distribution of, 281 ; ven- 

 tralis, 173, 221 ; apus, 173, 221 



Opisthacanthus, 382 



Opisthopatus, 346, 432 



Opossum, range, 182 ; past history, 

 229 ; in West Indies, 283 ; in South 

 America, 366 ; in Santa Cruz beds, 

 403 



OPPENHEIM, on Helicidae, 206 



Oreamnos, origin of, 106 ; kennedyi, 

 92 ; montanus, 105 



Oreohelix, 206 



Oreotrochilus, 367 



Orestias, 361, 362 



Orthalicinae, 270, 273 



ORTMANN, distribution of Cambarus, 

 177 ; distribution of freshwater 

 crayfishes, 217 220; Central Ameri- 

 can crabs, 239, 240 ; freshwater 

 crabs, 255 ; land - bridge between 

 Mexico and Cuba, 291 ; development 

 of Central America and Antilles., 

 292 ; origin of Galapagos, 314 ; 

 Miocene marine fauna of Peru, 334; 

 geological history of South America, 

 339, 340 ; south Atlantic land- 

 bridge, 381 383; on Ihering's Arch- 

 helenis, 382 ; on age of Santa Cruz 

 beds, 398 ; Chilean crayfishes, 405 ; 

 on Antarctic continent, 419, 420, 424 



Orycteropidae, 373 



Orycteropus, 372 

 Oryctolagus cuniculus, 225 

 Oryzomys, range of, 284 ; metis, 284; 

 antillarum, 284; galapagoensis, 299; 

 bauri, 299 ; nelsoni, 299 

 OSBORN, connection between North ,and 

 and South America in Cretaceous 

 times, 71, 227 ; connection between 

 Asia and North America, 84, 819 ; 

 dispersal of camels, 86 ; distribu- 



