EIGHTH ANNUAL REPORT. 205 



DERIVATION OF NORTH AMERICAN MAMMALS. 



D1DELPHIDAE; MARSUPIALS. 



Didelphys, Opossum North American, of great antiquity. 



DASYPODIDAE: EDENTATES. 



Cabassous, Armadillo South American. 



ERITHIZONTIDAE: RODENTS. 



Porcupines South American. 



HAPLODONTIDAE: ^ 



Sewellel, M , . 



^r^.^m ^ - North American. 



GEOMYIDAE: 



Pouched Rats, J 

 Other Families Eurasiatic or Cosmopolitan. 



BOVIDAE: UNGULATES. 



Ovibos, Musk-Ox, 



Bison, Buffalo, I Eurasiatic, possibly of remote African 



Ovis, Mountain Sheep. I origin. 



Oreamnos, Mountain Goat, J 

 CERVIDAE: 



Alces, Moose, ) -r, , t? • «.• 



Rangifer, Caribou, t Boreal or Eurasiatic. 



Cervus, Wapiti Eurasiatic. 



Odocoileus, American Deer North American. 



ANTILOCAPRIDAE: 



Antilocapra, Prong-Horn North American. 



DICOTYLIDAE: 



Dicotyles, Peccary North American. 



URSIDAE: CARNIVORES. 



Ursus — Black Bear Group, 1 r • .• u ui • • ^ 



Grizzly Bear Group, \ Eurasiatic, probably arriving in the 



Brown Bear Group J order named 



MUST ELI DAE: 



Taxidea, Badger, 1 



Mephitis, ) c . <. \ North American. 



Spilogale, \ Skunks » J 



Gulo, Wolverine, " 



Mustela, Marten, 



Putorius, Mink, - Eurasiatic. 



Lutra, Otter, 



Latax, Sea Otter,. 

 PROCYONIDAE: 



Bassariscus, Cacomistle, ^ 



Procyon, Raccoon, J- North American. 



Nasua, Coati Mundi, ' 

 CANIDAE: 



Urocyon, Gray Fox North American, doubtfully. 



Canis, Wolf, } it • »• 



Vulpes, Fox, \ Eurasiatic. 



FELIDAE: 



Lynx, Lynx Eurasiatic. 



Felis, Puma Eurasiatic. probably. 



