CONTENTS 



PAGE 



Suborder PERISSODACTYLA . . . . .368 



Family TAPIRID.E, 370 ; Tapirus, 370 ; Palceotapirus, 373. 

 Family LOPHIODONTID^, 373. Family PAL^OTHERIID^E, 375. 

 Family EQUID.E, 376 ; Protohippus, 380 ; Hipparion, 380 ; 

 Equus, 381. Family RHIXOCEROTID.E, 402 ; Rhinoceros, 402 ; 

 Extinct types, 411. Families LAMBDOTHERIID.E, CHALICO- 

 THERIID.S:, and TITANOTHERIID^E, 412. Family MACRAU- 

 CHENIID.E, 414. Family PROTEROTHEIIIIT)^, 414. 



SUBUNGDLATA . . . . . . .414 



Suborder HYRACOIDEA . . . . . .415 



Family HYKACIDJE, 415 ; Hyrax, 417 ; Dendrohyrax, 418. 



Suborder PROBOSCIDEA . . . . . .418 



Family ELEPHANTID.E, 423 ; Elephas, 424 ; Mastodon, 431. 

 Family DINOTHERIID.E, 435 ; Dinotherium, 435. 



Suborder AMBLYPODA ...... 436 



Uintatherium, 436 ; Coryphodon, 437. 



Suborder CONDYLARTHRA ..... 438 



Suborder TOXODONTIA ...... 439 



Ncsodon, 439 ; Toxodon, 439 ; Typotherium, 440. 



Group TILLODONTIA ...... 441 



Bibliography of Ungulates . . . . .442 



CHAPTER X 



THE ORDER RODENTIA ...... 443 



Suborder SIMPLICIDENTATA ... . . . 448 



Section SCIUROMORPHA, 448. Family ANOMALURID.E, 449 ; 

 Anomalurus, 449. Family SCIURID.S:, 450 ; Sciurus, 450 ; 

 Rhithrosciurus, 452 ; Xerus, 452 ; Tamias, 452 ; Pteromys and 

 Sciuroplerus, 453 ; Eupetaurus, 454 ; Extinct genera, 454 ; 

 Arclomys, 454 ; Cynomys, 455 ; Spermophilus, 456 ; Extinct 

 genera, 457- Family HAPLODONTID*:, 457 ; Haplodon, 457. 

 Family CASTORID^:, 457 ; pastor, 457. Section MYOMORPHA, 

 459. Family MYOXID^E, 459 ; Myoxus, 459 ; Eliomys, 459 ; 

 Graphiurus, 459 ; Claviglis, 460 ; Muscardinus, 460. Family 

 LOPHIOMYID.E, 460 ; Lophiomys, 460. Family MURID^;, 461 ; 

 Hydromys, 461 ; Xeromys, 461 ; Platacanthomys, 462 ; Gcrbilltts, 

 462 ; Pachyuromys, 462 ; Mystromys, 462 ; Otomys and Dasymys, 

 462 ; Malacomys, 462 ; Phlceomys, 462 ; Dendromys, 463 ; 

 Cricetus, 463 ; Holochilus, 464 ; Sigmodon, 464 ; Rhitltrodon 

 and Odwtodon, 464 ; Neotoma, 464 ; Jfypogcomys, 465 ; Nesomys, 

 465 ; Brachytarsomys, 465 ; Hallomys, 465 ; Eliurus, 465 ; 

 Phenacomys, 466 ; Arvicola, 466 ; Synaptomys, 467 ; Mi/odes, 

 467 ; Cuniculus, 470 ; Fiber, 470 ; Neofiber, 472 ; Ellobius, 



