ALLEN ON GEOGRAPHICAL DISTRIBUTION OF MAMMALS. 339 



Genera of the North American Region. 

 [Note. — The names of cv-xumpolar genera are in italics ; those of genera peculiar to the region, in 



SMALL CAPITALS.] 



Genera. 



Lynx 



Canis 



Vulpes 



XJeocyon 



Oulo , 



Mustela 



Putorius 



Mephitis 



Spilogale 



Taxidea 



Lutra 



Enhydris 



Procyon 



JJrsus , 



Phoca 



Pagomys 



Fagophilus 



Erigtmthus 



Haliehcerus ... 



Cystophora 



Eumetopias. .. 



Zalophus 



Callorhinus ... 



Alces 



Rangifer 



Cervus 



Caeiacus 



Mazama 



Ovis 



Bison 



Antilocapra . 

 Nyctinomns... 

 ITycticejus — 



Lasiurus 



Vesperugo 



Vespertilio 



Synotun 



Antrozous 



SCALOPS 



SCAPANUS 



TJrotrichus 



Neosokex 



Sorex 



Blaeina 



Sciuropterus .. 



Subregions. 



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