Index 



Mylodon, in Hawver Cave, 467, 470, 

 473, 488. 



garmani, 166, 171; identity of foot 

 material, 276; co-ossification of 

 phalanges, 283. 



harlani, abnormality in skull, 140; 

 structure of pes in, 267; tarsus, 

 269; astragalus, 268, 279, 282, 283; 

 cuneiform, 270, 272, 279; meta- 

 tarsus, 270, 272, 278; digits, 272, 



278, 280, 285, composition of, 279; 

 co-ossification, 275, 283; division 

 of astragalar facet, 279; peculiar 

 modifications in pes, 282; figures 

 of : left pes, 269 ; middle cuneiform 

 and metatarsal, 271; phalanges, 

 273, 275, 490; tooth, 490; com- 

 parisons, 270, 272, 275, 277, 278, 



279, 281, 283, 284, 285, 286, of 

 co-ossification 275. 



tenuiceps, 171; objection to, 172; 

 figures of cranium, 176, 178. 



robustus, 167; characters of, 267, 

 268, 269, 270, 275, 277; figure of 

 pes, 269; compared with M. har- 

 lani in respect to phalanges, 275, 

 277, 283. 



Mylodont sloth, characters of, 166- 

 172; dentition of, 168; South 

 American, 169; Nebraska skull of, 

 172. 



Mylodont Sloths from Rancho La 

 Brea, Further Observations on 

 the Skull Structure of, 165; 

 cranium, 166; mandible, 168; 

 dentition, 168. 



Mylodontidae, 488; Scelidotherium, a 

 member of, 282. 



Mylohyus in Conard fissure, 473. 



Mytilus kewi Nomland, plate showing, 

 315. 



Nacimiento River, California, Santa 

 Margarita fauna collected from, 

 304. 



Nash, Mrs. Louise, acknowledgment 



to, 139. 

 Nathorst, A. G., cited, 64. 

 Natica orbicularis, figure of, 47, 48, 63. 

 Nebraska skull of Mylodont sloth, 172. 

 Negaunee iron formation, 9. 

 Nematherium, 282. 



Neohipparion, 431, 435, 437, 441; 

 figures of, 119, 121, 123. 

 gratum tehonense, 118. 

 molle, 120; beds of, assigned to 

 Santa Margarita formation, 297. 

 Neotoma cinerea, 486. 



fuscipes, 486. 

 Neotragocerus lindgreni, 526; figure 



of horncore of, 525. 

 New Fossil Corals from the Pacific 



Coast, 185. 

 New Mammalia from the Idaho For- 

 mation, 523. 



New Mammalian Faunas from Mio- 

 cene Sediments near Tehachapi 

 Pass in the Southern Sierra 

 Nevada, 75. 



New Puma-like Cat from Rancho La 

 Brea, 535. 



New Mustelid from the Thousand 

 Creek Pliocene of Nevada, 21. 



New Zealand, Triassic ichthyosaurians 

 in, 64. 



Newhall, California, 226, 228. 



Nomland, J. O., 185, 191, 293; cited, 

 46-50, 302. 



North American toads, 289. 



North Star Quarry, Sky Blue Hill, 

 California, 329. 



North Yakima, Washington, 255. 



Nothrotherium, occurrence, 138, 164, 

 465, 467, 471, 488; comparisons, 

 140, 142, 148, 149, 163, 502, 513; 

 review of species, 157-162; rela- 

 tionships 162-163; co-ossification 

 275,283; some conclusions, 163,164. 



. graciliceps, 160. 



shastense, cranium, 139-148; figures 

 of 139, 141, 143, 147; figures of 

 mandible, 149, 150; from Potter 

 Creek Cave, 157, 158; from 

 Rancho La Brea, 492. 

 hawveri, 492; figures and measure- 

 • ments of, 492, 493, 496-502, 504, 



506-513. 

 texanum, 160, 161. 



Nothrotherium from Rancho La Brea, 

 Recent Studies on the Skull and 

 Dentition of, 137; occurrence, 

 nature, and distribution of mater- 

 ial, 138; Brazilian species, 142; 

 cranium 139-148; mandible, 148- 

 151; dentition, 151-157. 



Oakland, California, conglomerate, of, 

 364. 



Occurrence of Ore on the Limestone 

 Side of Garnet Zones, 25. 



Okenite, 351. 



Old World faunas, correlation of, with 

 American Pliocene mammal faunas 

 442. 



Ogishke conglomerate, 7. 



Oldroyd, Mrs. Ida, acknowledgment 



to, 40. 

 Omphalosaurus, 69. 

 Ontarian division of geological time, 



16, 17. 



Ontarian system, 16, series included in, 

 16. 



Ontario, Canada, southeastern, granites 



in, 11. 

 Opal, 352. 



Ore, on the Limestone Side of Garnet 

 Zones, Occurrence of, 25; rela- 

 tionship between ore and garnet 

 zones, 26; examples of, 26-33; in- 

 terpretation of, 35, conclusions, 37. 



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