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LIFE OF THE PLEISTOCENE 



BOVIDAE 



Bison antiqutts Leidy 



" bison (Linn.) 



" alleni Marsh 



" occidentalis Lucas 



" laiifrons (Harlan) 



Symbos cavifrons (Leidy) 



Bobtherium bombifrons (Harlan) 



sargenti Gidley 



Oiibos moschatas Zimm 



AJtonius calvini Hay 



Elephantidae 

 Mammttt americanum (Kerr) 



" progenium Hay 



Rhabdobunus mirificus (Leidy) 



Elepkas primigenins Blum 



" imperator Leidy 



" columbi Falconer 



Scturidae 



Sciurus calycinns Cope 



Cynomys hidovicianns (Ord) 



Marmola monax (Linn.) 



Castoeidae 



Castor canadensis Kuhl. 



MURIDAE 



Peromysais leucopus (Raf.) 



Anaptogonia hiatidens Cope 



Syciunt doacinum Cope 



Microtus pennsyvlanicus (Ord) 



" diluvianus Cope 



" speothen Cope 



" didelta Cope 



" involutus Cope 



amphibius Cope 



Fiber zibethicus (Linn.) 



Geomyidae 



Geomys bur sarins (Shaw) 



Thomomys species 



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