Index 



Magnolia, 414. 



lanceolata, 416. 

 Marcia (?) conradi, 484; figure of, 



opp. 508. 

 Marcon, J., cited, 369. 

 Martin, Bruce, 17, 215; cited, 296. 

 Martinez Eocene, mactrine species 



from, 274. 

 Martinez formation, 139; relation of 



fauna to Tejon fauna, 455. 

 Marysville Buttes, historical geology 



"of, 405. 



Matthew, W. D., acknowledgment of 

 assistance, 525. 



Merced series, 222; of the type local- 

 ity, 223; fauna of, 226, 251-258, 

 275; list of fossils from, 229; 

 correlation of, 259; of Bolinas 

 Bay, 230; fauna of, 231, 251- 

 258; of Afio Nuevo Bay, 230, 

 fauna of, 231, 251-258; of Pil- 

 lar Point, 231, fauna of, 232, 

 251-258; of Sargent oil field, 

 232, fauna of, 233; of the Santa 

 Posa Valley, 233. 



Meretrix californiana, 368. 

 hornii, figure of, opp. 508. 

 uvasana, 368. 



Merriam, J. C, 1, 49, 161, 525; cited, 

 5 note 4, 9, 11, 12, 16, 77, 84 

 note 6, 152, 164, 167 note 7, 

 204, 525 note 1, 284, 293; 

 acknowledgment of assistance, 

 61, 112, 263, 367. 



Merychippus, sp., 186; figures of, 

 187. 



Merychippus? or Hipparion?, figures 

 'of, 187. 



intermontanus, 50; figures of, 51. 

 sumani, 49; figure of, 51. 

 Merycodontidae, 194. 

 Merycodus sp., 117; figures of, 196. 

 furcatus, 194; figures of, 196. 

 near necatus. 197; figure of, 196. 

 Mesozoie and Cenozoie Maetrinae of 

 the Pacific Coast of North Amer- 

 ica, 261. 



Metula harrisi, 494; figure of, opp. 

 516. 



Micromactra, 279. 



Miller, L. TP, 89, 97, 105; cited, 173. 

 Miocene, Barstow, 50; Upper, or 



Bear River, 240, fauna, 240, 251- 



258; period of differentiation of 



maetrinae, 277. 

 Mitramorpha parsonsi, 495; figure of, 



opp. 508. 



Mohave Desert, California, 49, 50, 

 54. 



Monodonta wattsi, 494; figures of, 



opp. 512. 

 Monterey formation, 9; shale, 16. 

 Morris Eavine, California, conditions 



of sedimentation in, 390. 



[540] 



Mulinia, descriptions of, 304. 

 Mulinia alta, 275; differentiation 

 from M. densata, 306; descrip- 

 tion of, 307; differentiation from 

 M. densata, M. pabloensis, M. 

 undilifera, 308. 

 densata, 264, 268, 275, 310; graph 

 of, 269; description of, 304; 

 hinge plate of, 306; differentia- 

 tion from M. pabloensis, M. alta, 

 M. undilifera, 306, from M. alta, 

 308; figures of, 348, 350, 352, 

 354, 356. 



var. minor, 265; occurrence of, 

 in Coalinga district, 274; 

 described bv Arnold from 

 the Vaqueros, 305; descrip- 

 tion of, 307. 

 landesi, 274, 275; description of, 

 309. 



oregonensis, 265; description of, 



304; within the range of M. 



densata, 305. 

 pabloensis, 275; description of, 



309; resemblance to M. densata, 



310. 



trampasensis, 275. 



undilifera, 275; differentiation 

 from M. densata, 306, 309, from 

 M. alta, 308, 309; description 

 of, 308; figures of, opp. 358. 



ventricosa, 281. 

 Murex (Oeinebra) nashi, 495. 



perangulatus, 206; figures of, opp. 

 214. 



Mustelid, 175; figures of, 174. 

 Myazone, 83. 

 Mylagaulus?, sp., 177. 

 Mytilus humerus, 368. 



kewi, 206; figure of, opp. 210. 

 Nash, Mrs. L., acknowledgment to, 

 163. 



Natica aetites(?), 368. 

 alveata, 368. 



convexa, 86; figures of, opp. 

 88. 



gesteri, 496; figures of, opp. 508. 

 gibbosa, 368. 



hannibali, figures of, opp. 508. 

 orbicularis, 207; figures of, opp. 

 212. 



uvasana, figure of, opp. 508. 

 Neocene, Later, deposits, at Cape 



Blanco, Oregon, 295. 

 Neogyps errans, 108. 

 Neohipparion gidleyi, 1 ; figure of, 2. 

 leptode, 3; figure of, 4. 

 montezumae, 3. 

 molle, 3, 83, 85; figure of, 2. 

 sinclairii, 3. 

 Neophrontops americanus, 106; tar- 

 sometatarsus, 106; tibiotarsus, 

 108, humerus, 10.1; figures of, 

 107. 



