hides 



Pownell, Benjamin, gift, 169. 



Proeamelus (?), 381; figure, 380. 



Prosthennops (?), 378; figures, 378. 



Protohippine Horses, New, from 

 Tertiary Beds on the Western 

 Border of the Mohave Desert, 

 435. 



Protohippine (?) astragalus, 377; fig- 

 ure, 377. 



Protohippus (?) tantalus, n. sp., 440; 

 figure, 441. 



Pseudoanticline, 25. 



Pseudo-current bedding, 25. 



Pseudofolds, 25. 



Pseudolaminae, 23. 



Pseudomalaehite, 16. 



Pseudostrata, 23. 



Pseudostratification, 22. 



Pseudostratification in Santa Bar- 

 bara County, California, 21. 



Psilomelane, 14. 



Puente Hills, California. 



Pyrargyrite, 9; forms and measure- 

 ments, 9. 



Pyrite, 8. 



Pyrolusite, 14. 



Quartz, 13. 



Quaternary deposits of Nevada, 329. 

 Rancho La Brea, 39, 75, 152, 305, 387, 



397; rodents of, 154, 397; six 



plates in illustration of, opp. pp. 



394, 396, 398, 400, 402, 4(14. 

 Ransome, F. L., cited, 327. 

 Recent Discoveries of Carnivora in 



the Pleistocene of Rancho La 



Brea, 39. 



Recent displacement in the valley of 

 the Jawbone Canon drainage, 

 140. 



Recent Observations on the Mode of 

 Accumulation of the Pleistocene 

 Bone Deposits of Rancho La 

 Brea, 387. 



Red Roek Canon, California, 120; 

 basalt in walls, 124; origin, 134. 



Reed, John T., 444. 



Reinhardt, J., cited, 347, 348. 



Rhinoptera smithii, 254; figure of 

 tooth, 255. 



Rhodochrosite, 15; forms and meas- 

 urements, 15. 



Rhodonite, 16. 



Ricardo, Mohave Desert, California, 

 376; erosion surface, 138; fauna, 

 385; beds, 436. 



Ridgway, R., cited, 96. 



River otter, 467. 



Rodeo Pleistocene, 82. 



Rosamond series, California, 121, 123, 

 384; fossils, 126, 133; materials, 

 133; age, 142; peneplanation, 142. 



Ross, Madam Ida Hancock, acknowl- 

 edgment of assistance, 388, 397. 



Salinas Valley, California, 202. 



Samwel Cave, California, 71, 152; ro- 

 dents, 154, 350. 



San Clemente Island, California, 196. 



San Joaquin Hills, 300. 



San Joaquin Valley, California, south 

 end, 228. 



San Luis quadrangle, California, 202. 

 San Mateo County, California, 203. 

 San Pablo, California, 205; series, 48, 



50, 52; Lower Division, 53, 59; 



fauna, 54; Upper Division, 55, 



59; faunal zones, 57. 

 San Pablo group north of Mt. Diablo, 



52. 



San Pedro, California, 200, 350; up- 

 per San Pedro beds, 350. 



Sand pendants, 27. 



Santa Barbara County, California, 23. 



Santa Catalina Island, California, 196. 



Santa Clara Valley, California, 209; 

 in Ventura County, 180; develop- 

 ment of region south of, 188; 

 relationship of Santa Clara Val- 

 ley region of V entura County to 

 the coastal region to the north 

 and west, 179. 



Santa Cruz folio, California, 216. 



Santa Maria district, California, 212. 



Sargent oil field, California, 223. 



Schlosser, M., cited, 438, 439. 



Sciuropterus alpinus klamathensis, 

 157. 



Sciurus donglasi albolimbatus, 157. 



griseus fossilis, 155, 156. 

 Seutaster, 299, 300. 



andersoni, 299, 301 ; figure, opp. 304. 

 Scutella fairbanksi Merriam, 184. 



merriami, 300. 



norrisi, 299; figure, opp, 304. 



Scutella norrisi and Seutaster ander- 

 soni, Notes on, 299. 



Sea-otter, 466; osteology and evolu- 

 tion of, 465; h'story of literature, 

 469; origin, palaeontologic evi- 

 dence bearing on problem of, 

 492; summary of points on 

 aquatic adaptation of, 495. 



Selenium, 7. 



Sericite, 16. 



Sespe formation, 181, 184; upper 

 Sespe, 183; phase of the Tejon, 

 186. 



Sharks, 243. 



[502] 



