96 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.46. 



LIST OF FAUNA REPRESENTED. 

 Equus sp. 



Tapirus cf . liays^i ( ?) Leidy. 

 Taurotragus americanus Gidley. 

 Platygonus cf . vetus ? Leidy. 

 TJrsus (Euarctos) cf. americanus ? Pallas. 

 Ursus (Euarctos) vitahilis, new species. 

 Canis armhrusteri, new species. 

 Canis sp. 

 Vulpes (?) sp. 

 Mustela cf . mson Schreber. 

 Lepus americanus ? Erxleben. 

 Lepus sp. 



Ochotora cf. princeps. 

 Synaptomys sp. 



5'. (Myctomys) cf. borealis (Richardson). 

 Microtus cf. chrotorrhinus Miller. 

 Microtus sp. 

 Neotoma sp. 



Napseozapus sp. probably new. 

 Peromyscus cf. leucopus (Rafinesque). 

 Erethizon, two new species. 

 Marmota cf. monax Linnaeus. 

 Sciuropterus cf. alpinus Richardson. 

 Sciurus Jiudsonicus Erxleben. 

 Myotis, new species (?). 

 Vespertilio grandis Brown. 

 Vespertilio sp. 

 Blarina cf. hrevicauda (Say). 



DESCRIPTION OF NEW SPECIES AND NOTES ON CANIDS. 



CARNIVORA. 



Genus URSUS (EUARCTOS) Gray. 



This subgenus is represented by at least two species, as shown by 

 many specimens consisting of foot and limb bones, and a few upper 

 and lower jaw portions containing teeth. At least one of these forms 

 is new and is described below. 



URSUS (EUARCTOS) VITABILIS, new species. 



Type. — Lower jaws, nearly complete, lacking incisors (Cat. No. 

 7665, U. S. Nat. Mus.), see figs. 1, la, p. 97. 



Description. — About the size of U. (Euarctos) americanus, but differs 

 from that species in (1) comparatively larger canines; (2) wider space 



