KEY TO LAND MAMMALS OF NORTHEASTERN NORTH AMERICA I5I 



Genus Vespertilio Linnaeus 



1758 Vespertilio Linnaeus, Systema naturae, ed. 10. 1 : 31. Type Y . m u r i - 

 n u 8 , Linnaeus. 



Teeth ^2] two pairs of front teeth in upper jaw between canines; back of 

 membrane between legs naked except for a sprinkling of fine hairs on basal 

 fourth. (Vespertilio; Lat., a bat) 



The genus Vespertilio is widely distributed in both hemispheres, 

 but the species are very imperfectly known. Only one occurs in North 

 America. 



Vespertilio fuscus Beauvois Big brown bat 



1796 Ve sp e rtil i o fuscas Beauvois, Catalogue Peale's museum. Phila- 

 delphia, p. 18. (Philadelphia Pa.) 



1897 Vespertilio fuseus Miller, North American fauna. 16 Oct. 1897, 

 no. 13, p. 96. 

 Sepia brown, paler below. Total length, 110 (4|) ; tail vertebrae, 45 (If); 



forearm, 45 (If), (fuscus; Lat., dark) 



The big brown bat occurs throughout Mexico, the United States and 

 southern Canada north to the lower edge of the boreal zone. It is divisi- 

 ble into several races, of which the typical, V. fuscus fuscus, is 

 abundant in eastern North America. 



CORRECTIONS 



Corrections of the names of two of the mammals occurring in eastern 

 North America have been published^ too late to be inserted in the body 

 of this paper. They are as follows : 



The house rat (p. 95) should be Mus norvegicus Erxleben, Syst. 

 regn. anim. p. 381. 1777. 



The northeasiern fox squirrel (p. 87) should be Sciurus ludovi- 

 cianus neglectus (Gray) (Macroxusneglectus Gray, 

 Ann. and Mag. nat. hist. 1867, 3d ser. 20 : 425. Sciurus ludovi- 

 cianus neglectus Nelson, Proc. biolog. soc. Washington 31 Oct. 

 1900. 13 : 170) 



1 Proc. toiol. soc. Washington, 31 Oct. 1900. 13 : 167, 169-70 



