CONTENTS IX 



ORDER RODENTIA (INCLUDING ORDER LAGO- 



MORPHA) GNAWING MAMMALS . . . 246 

 FAMILY SCIURIDAE SQUIRRELS, CHIPMUNKS, 



WOODCHUCKS, PRAIRIE-DOGS . . ~ . ' . 255 



FAMILY GEOMYIDAE POCKET GOPHERS . . 267 

 FAMILY HETEROMYIDAE POCKET RATS AND 



POCKET MICE . . ... . . 269 



FAMILY CASTORIDAE BEAVERS . , . . 271 

 FAMILY CRICETIDAE NATIVE RATS, MICE, ETC. . 275 

 FAMILY MURIDAE OLD WORLD RATS AND MICE 291 

 FAMILY APLODONTIDAE MOUNTAIN BEAVERS . 294 

 FAMILY ZAPODIDAE JUMPING MICE . . 294 

 FAMILY ERETHIZONTIDAE AMERICAN PORCU- 

 PINES . . . ... . . 294 



FAMILY HYSTRICIDAE OLD WORLD PORCUPINES 295 



FAMILY CHINCHILLIDAE CHINCHILLAS . . 296 



FAMILY CAVIIDAE CAVIES .... 296 



FAMILY OCHOTONIDAE PIKAS . . . . 296 



FAMILY LEPORIDAE HARES AND RABBITS . 297 



ORDER HYRACES CONIES 303 



ORDER PROBOSCIDEA ELEPHANTS ... 304 

 ORDER ARTIODACTYLA EVEN-TOED HOOFED 



MAMMALS . . .- . 305 



FAMILY SUIDAE THE SWINE (Hoes, PEC- 

 CARIES, ETC.) 306 



FAMILY PHACOCHOERIDAE WART AND FOREST 



HOGS . . 307 



FAMILY TAYASSUIDAE PECCARIES . . . 307 

 FAMILY HIPPOPOTAMIDAE HIPPOPOTAMUSES . 307 

 FAMILY CAMELIDAE CAMELS, LLAMAS, AL- 

 PACAS, ETC. . . . . ... 308 



FAMILY CERVIDAE DEER, ELK, MOOSE, CARI- 

 BOU, REINDEER . . . . . . . 310 



FAMILY GIRAFFIDAE GIRAFFES AND OKAPIS . 322 

 FAMILY ANTILOCAPRIDAE AMERICAN PRONG- 

 HORN ANTELOPES . . . . . . 323 



FAMILY BOVIDAE CATTLE, BUFFALOES, SHEEP, 



GOATS AND THEIR ALLIES . . . 325 



