CONTENTS xiii 



Suborder Perissodactyla ..... 368 



Family Tai'h:ii>.k. 370 ; Tapirus, 370 ; Palceotapirus, 373. 

 Family LoPHiODONTiD.fi, 373. Family 1' \i..i:< n n i.i: iid^e, 375. 

 Family Equip-e, 376; Protohippus, 3S0 ; Hipparion, 380; 

 Equus, 381. Family Rhinocerotid^, 402; Rhinoceros, 402; 

 Extincl types, 411. Families Lamupotheriipje, Chalico- 

 THERIID.fi, and TlTANOTHERHD.fi, 412. Family Macrau- 

 CHBNilD.fi, 414. Family PROTEROTHERUDfi, 414. 



StTBTJNGULATA ....••• 414 



Suborder Hyracoidea ..... 415 



Family Hyracip.e, 41") ; Ilyra.r, 117 ; Dendrohyrax, 418. 



Suborder Proboscidea ...... 418 



Family ELEPHANTlDfi, 423 ; Elephas, 124 ; Mastodon, 431. 

 Family DiNOTHERiiDiE, 435 ; Dinotherium, 435. 



Suborder Amblypoda ...... 436 



Uintathcrium, 436 ; Coryphodon, 437. 

 Suborder Condylarthra ..... 438 



Suborder Toxodontia ...... 439 



Nesodon, 439 ; Toxodon, 439 ; Typotherium, 440. 

 Group Tillodoxtia . . • • • .441 



Bibliography of Ungulates . . . . .442 



CHAPTER X 



The Order Kodentia ...... 443 



Suborder Sijiplicidentata ..... 448 



Section Sciuromorpha, 448. Family Anomalurib^e, 449 ; 

 Aaomalurus, 449. Family Sciurip^:, 450; Sciurus, 450; 

 Eh ith rose inrus, 452 ; Xerus, 452 ; Tamias, 452 ; Pteromys and 

 Sri it ropier us, 453 ; Eupctcinrus, 454 ; Extinct genera, 454 : 

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

 genera, 457. Family Haplodontid.e, 457 ; Haplodon, 457. 

 Family Castoribjs, 457 ; Castor, 457. Section Myomorpha, 

 459. Family aIyoxip^e, 459; Mijoxus, 459; Eliomys, 459; 

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

 LoPHlOMYlDfi, 460; Loxthiomys, 460. Family Murip^e, 461 ; 

 Hydromys, 461 ; Xcromys, 461 ; Platacanthomys, 462; Gerbillus, 

 162; Pachyuromys, 462 ; Mystromys, 462; Otomys&nd Dasymys, 

 462 ; Molar,, mys, 462 ; Phlceomys, 462 ; Dendromys, 463 ; 

 Cricetus, 463; Holochilus, 464; Sigmodon, 464; BMbhrodon 

 and Oehetodon, 464 : Neotoma, 164 ; Hypogeomys, 465 ; Xesomys, 

 465 ; Brachytarsomys, 465 ; Hallomys, 465 ; Fl inrus, 465 ; 

 Phenacomys, 466 ; Arrimlo, 466 ; Synaptomys, 467 ; Myodes, 

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



