Index 



minor, 327, 330 ; characters of, 330 ; 

 dentition compared with den- 

 tition of P. cumminsii, 332 ; of 

 P. proversus, 332; of P. sim- 

 plicidens, 332; description of 

 material, 330; plates showing, 

 329, 330, 331, 322. 



indet., lower cheek teeth of, 401 ; 

 plate showing, 401. 



interpolatus, 333. 



mirabilis, 288. 



osborni, 332 ; plate showing, 393. 

 n. sp., 383; characters of, 383; 

 description of teeth, 384; 

 lower cheek teeth tentatively 

 referred to, 393; plate show- 

 ing, 384. 



subform A, 385; description of 

 teeth, 386; lower teeth tenta- 

 tively referred to, 394; plates 

 showing, 384, 385, 395. 

 proversus, 289, 309, 328. 

 simplicidens, 288, 328. 

 speetans, 288, 389. 

 ? Pliohippus, lower milk teeth of, 402 ; 



plate showing, 402. 

 Point Arena group of geodetic sta- 

 tions, 456. 

 Point Pinos, geodetic station, 468. 

 Potrero Creek deposits, 338. 

 Potter Creek cave, 247. 

 Proboscidea, 288. 

 Procameline, indet. sp., 340. 

 Procamelus, 288; plates showing, 376, 

 377. 



edensis edensis, 367; characters 

 (generic) of, 367; description 

 of, 370; description of referred 

 specimen, 370 ; plates showing, 

 368 and 369. 

 raki, 367; characters of, 370; 

 description of, 371 ; plates ■ 

 showing, 368 and 369. 

 gracilis, 374. 



indet. sp. or subsp., 373 ; descrip- 

 tion of, 373; limb elements of, 

 375; plates showing, 373 and 

 374. 



robustus, 366. 



(?) sp. A, 372; characters of, 372; 

 plate showing, 372. 

 Procamelus-like species, 367; plates 



showing, 365 and opp. 420. 

 Promerycocherus beds, 270. 

 Pronothrotherium, 349. 

 Prosthennops, 288. 

 erassigenis, 352. 



edensis, 350; compared with P. 

 erassigenis, 352; with Pros- 

 thennops-like specimen from 

 Thousand Creek, Nevada, 352; 

 description of, 351; generic 

 and specific characters, 351; 



lower jaw referred material, 

 353 ; lower premolar compared 

 with lower premolar of Platy- 

 gonus, 353 ; of Mylohyus from 

 the Conard fissure, 353 ; of 

 Presthennops erassigenis, 354; 

 with material from Merychip- 

 pus Zone of Goalinga, 354; 

 from Rattlesnake formation, 

 Oregon, 354; upper jaw re- 

 ferred material, 352; plate 

 showing, 357. 



Protapirus robustus, 313. 



Protohippus, 332. 



Psammobia, cf. hornii, 10. 



Puget Sound, 29. 



Pulgas West Base, geodetic station, 

 465. 



Quaternary system, 16. 



Babbit, 283. 



Eadiolarian cherts, 7. 



Rancho La Brea, 248; Pleistocene 



fauna, 247. 

 Rattlesnake Pliocene deposits, 249, 



287. 



Red Hill, geodetic station, 462. 

 Redroek fault, 17. 

 Eeid, H. F., 432. 

 Remoud, 26. 



Reptiles, marine Triassic, 247. 

 Republican River, fauna of the, 287. 

 Rhinoceros, teeth of, 271. 



hesperius, 272. 

 Rhinocerotidae, 288. 

 Rhynchopygus, 29, 30, 138. 



pacificus, 141. 

 Ricardo lower Pliocene, 248, 287. 

 Rocky Mound, geodetic station, 461. 

 Rodents, Pleistocene, 248. 

 Rosebud, Lower, 270. 

 Ross Mountain, geodetic station, 436; 



interpretation of data, 449; 



movements of, 447, 454. 

 Rothpletz, A., 433, 459, 469, 472. 

 Salinas shale, 13, 14. 

 Samwel cave, 247. 

 San Andreas fault, 443 ixxssim. 

 San Andreas rift, 433 ; longitudinal 



and transverse strain in region 



of, 443. 



Sandstone, bluff of the Tejon, 19. 



Sandstone, Vaqueros, 13. 



San Francisco Bay, 31. 



San Jacinto Quadrangle, 281 ; map 



showing, 281. 

 San Joaquin Valley, map of, 268. 

 San Marcos Pass, 21. 

 San Rafael Mountains, 4, 21. 

 Santa Ana Mountains of Southern 



California, 30. 

 Santa Cruz, geodetic station, 468. 

 Santa Cruz Cl'eek, 4. 



[4.39] 



