Index 



Mounted Skeleton of Mylodon Har- 



lani, 425. 

 Mylodon, 425. 



harlani, characters of, 426 ; mounted 

 skeleton, 425; plate showing, 

 opp. 430. 

 robustus, 425. 

 Nassa californica, 15. 

 Nebraska, 287. 



Neocene, 31 ; fauna of the, 29. 



Nevada, 247. 



Nomland, J. O., 244, 245. 



Nothrotherium, 349. 



Nothrotherium? or Pronothrotheriumf, 



sp., 349; description of, 349; 



plate showing, 349. 

 Nyctiloehus whitneyi, 10. 

 Oakland conglomerate, 8. 

 Odocoileus, 283. 



( ?) two or more species, compared 

 with O. hemionus and O. Colum- 

 biana, 296; plates showing, 

 296, 297, 298, 299. 

 Columbiana, 296. 

 hemionus, 296. 

 Oligoeene, 12, 31. 

 Olympic Peninsula, 244. 

 Orcutt, W. W., 248. 

 Ostrea, sp., 14. 

 Ostrea, cf. idreaensis, 10. 

 Outline of Progress in Palaeonto- 



logical Researcli on the Pacific 



Coast, 237. 

 Pacific Coast genera, phylogenetic 



tree for, 38. 

 Pacific Coast, geologic time scale for 



the, 26. 

 Pacific Coast Province, 244. 

 Pack, Eobert, 26. 

 Packard, E. L., 243. 

 Palaeobotanical investigations, 250. 

 Palaeontological research on the 



Pacific Coast, outline of progress 



in, 237. 



Palaeontology, invertebrate, 239; ver- 

 tebrate, 245. 

 Panama, 34. 



Paso Eobles formation, 16. 

 Peccary, 283. 



Pecten magnolia, 13, 14, 78. 

 Pelecypods, mactrine of the West 



Coast, 243. 

 Periarchus, 33. 

 Perris-peneplain, 279. 

 Persia, 248. 



Phillip's Eanch Miocene, 248. 

 Phylogenetic series, 35; principal 



criteria used in, 35. 

 Phylogeny of the Pacific Coast echi- 



noid families, statement of the, 



37. 



Pinniped remains, 250. 

 Pinole Tuff-Orinda, 287. 



Platygonus, 288. 

 bicalcaratus, 355. 

 compressus, 356. 

 labiatus, 356. 



? sp., 354 ; description of, 354 ; com- 

 parisons of, 365 ; plate show- 

 ing, 355. 

 texanus, 356. 

 Pleistocene fauna, Eaneho La Brea, 

 247 ; of eastern Oregon, Fossil 

 Lake, 247 ; Bautista, description 

 of, 293. 

 Pleistocene rodents, 248. 

 Pliauchenia, 288. 

 gigas, 361, 366. 



merriami, 288, 357, 358; characters 

 of, 358 ; compared with Came- 

 lops hesternus, 362 ; description 

 of, 358; limb elements of, 364; 

 lower jaw, 360; upper jaw, 

 360; plates shovnng, 357, 359, 

 365, 377, 418. 

 ? sp., 321 ; plate showing, 321. 

 sp. A, 266; plates showing, 365, 



377, opp. 418. 

 spatula, 361. 

 Pliauchenia-like species, plate show- 

 ing, opp. 420. 

 Pliocene, 15, 32; fauna, 244; Eden, 

 339; Etchegoin, 244; San Timo- 

 teo, 320 ; Fernando, near New- 

 hall, 244; Indian, 363; Eattle- 

 snake, 249. 

 Pliohippus, 283 ; limb elements of, 

 403 ; plate showing, 403 ; upper 

 milk teeth referred to, 391 ; plate 

 showing, 392. 

 cumminsii, 288, 328. 

 edensis, n. sp., 388; characters of, 

 388; description of teeth, 388; 

 lower cheek teeth near, 400; 

 medium-sized lower teeth near, 

 396; plates showing, 387, 397, 

 398, 400. 



subform A, 388; characters of, 

 389; compared with P. spec- 

 tans, 389 ; description of teeth, 

 389; plate showing, 389. 



subform B, 391, 398; characters of, 

 391; description of teth, 391; 

 large lower cheek teeth near, 

 398; plates showing, 390, 399. 



fairbanksi, 288. 



francescana, 322; characters of, 

 323; dentition of, 326; com- 

 pared with dentition of Equus 

 bautistensis, 327 ; of P. fran- 

 cescana minor, 329 ; of P. pro- 

 versus, 328 ; of P. simplicidens, 

 328; description of material, 

 323 ; plates showing, opp. 325. 

 326, and 416. 



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