of) 



Merriam — Gcograpliic Disivihidion of Life. 



Table showing the Geographic Distribution of North 

 American Genera of non-pelagic Mammals occurring 

 north ok Mexico. 



Cervus 



Rangifer 



Alee 



Ovis * 



Mazama 



Bison (?) 



Ovibos 



Tamias * 



Arctorays 



Aplodontia 



Castor * 



Cariacus f 



Antilocapra 



Cynomys 



Reitlirodontomys 



Onychomys 



Sitomysf 



Oryzomys 



Siginodon 



Neotoma t 



Georays 



Tliomoiiiys 



Dipodomys 



Didelphis 



Tatusia 



Dicotyles 



Boreal Genera. 



Arvicola * 



Fiber * 



Evotoniys 



Pbenacomys 



Myodes 



Cunifulus 



Zapus 



Evethizon 



Lagoinys 



Vulpes* 



Sonuran Genera. 



Perodipus 



Miorodipodops 



Perognatlius 



Heteromys 



Lynx t 



Urocyon 



Bassarisc'us 



Taxidea 



Conei)atus 



:Me-pbiti8 t 



Spilogale 



TruplcaJ Genera. 



Felis t 

 Procyon f 

 Nasna 



Ursus * 



Thalarctos 



Latax 



Gulo 



Mustela 



Lutreola * 



Pntorius * 



Sorex* 



Neurotriclius (?) 



Condvlura 



Notiosorex 



Blarinaf 



iScapanus 



Scalops 



Corynorhinus 



Eudenna 



Antrozous 



Nycticejus 



Vesperugo f 



Atalapba f 



Vesi>ertilio f 



Molossus 



Nyctinomus 



Otopterns 



Transition Zone Genera. 

 .Synaptoiuys 



Genera Inlnihitlng both Boreal and Sonoran Zo)n'.s. 



Sciuroptcrus 

 Sciuras 



Spermophilus 

 Canis 



Lutra 

 Lepus 



* Having one species in Sonoran Zone or reaching Sonoran. 



t Having one species in Boreal Zone or reaching southern edge of Boreal. 



