488 



INDEX 



Nelsonia, 201 



Nemorrhaedus, 83, 106 



Nemia (see Clausilia). 



Neocyclotm, 268 



Neo-flber, 64, 182 



Neomylodon (see Grypotherium) . 



Neotomodon, 201 



NepMla, olampes, 190 ; clavata, 191 



Nesodon, 399 



Nesolagus, 225 



Nesomimus, 301, 315 



Nesopelia, 301 



Nesoryzomyi, indefessus, 299 ; jm^- 

 boroughi, 299 



Nesospiza, 393 



Neuroptera of Florida, 178 ; of Cen- 

 tral America, 258 ; of Antilles, 289 



Neiirotrichus, 321 ; gibbsi, 201 



Newfoundland, survival of fauna from 

 pre-glacial times, 41 ; geological 

 history, 55 ; fauna of, 56 



Neivportia, 350 



NewtoNj Falkland island fossils, 430 



Nicaxagua, Lake, fauna of, 240 



Nicoletiella, 258 



Nome, maiine gravels at, 97 



Nonionina depressula, 47 



North-Bastern States, reptiles, 123 — 

 135 ; amphibians, 135 — 139 ; flora, 

 139—141 ; mammals, 141—143 



NoBDENSKioLD, on Mastodons, 408 



Notiodrilus, 412 ; bovei, 431 ; falc- 

 landicus, 431 



Notiosorex, 201 



Notostylops, 400—402 



Notropis, cornntos, 50 ; atherinoides , 

 50 



Nova Scotia, land-bird fauna, 66 



Nycterinus, 215 



Nysius, 391 







Ocean floor, composition of, between 

 America and Galapagos, 332 



Oceanodroma cryptoleucura, 302 



Ochotona coUaris, 92 



Octodontidae, 371 



Odocoilem, origin of, 107—110, 396; 

 hemionus, 107 ; mrginianus, 108, 

 396 ; columbiemus, 108, avius, 109 



Odondta, 258 



Oeneis semidea, 36, 38 



Oleacinae, 272 



"01m," 136 



Oniscus asellus, 39 



Oniticellus, 216 



Onychodectes, 244 



Onychomys, 201 



Onychophora, 345—347, 432 



Oyeoji, 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 Belicidae, 206 



Oreammos, origin of, 106 ; kennedyi, 

 92 ; montanus, 105 



Oreohelix, 206 



Oreotrochilus, 367 



Orestias, 361, 362 



Orthalicinae, 270, 273 



Oktmann, distribution of Ccembarus, 

 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 Antillesi, 

 292 ; origin of Galapagos, 314 ; 

 Miocene marine fauna of Peru, 334; 

 geological history of South 'America, 

 339, 340 ; south Atlantic laud- 

 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 ; victis, 284; 

 antillarum, 284; galapagoensis, 299; 

 bauri, 299 ; nelsoni, 299 

 OsBOEN", connection between North and 

 and South America in Cretaceous 

 times, 71, 227 ; connection between 

 Asia and North America, 84, 319 ; 

 dispersal of camels, 86 ; distribu- 



