MAMMALS OF MINNESOTA. 31 



the tip to a darkish-red, in some instances to a brighter red, 

 more rarely to a beautiful chocolate. The point is generally 

 white. The color of the membranes is a rich brown, border- 

 ing on a yellowish-brown, above the head. The ears and lips 

 are marked with yellow in the same manner as in the next 

 species (L. cinereus) they are marked with black." 



Dr. Allen notices a tendency on the part of northern speci- 

 mens to be constantly darker, the chocolate or dark red pre- 

 dominating, while toward the south the pelage is generally of 

 a brighter hue. 



Mr. J. A. Allen affirms that there is a well marked sexual 

 distinction, males being unil'ormely lighter in color. "In a 

 series of about twenty Massachusetts skins, nearly all marked 

 for sex by the collector, all the males are of a beautiful light, 

 bright, yellowish red, with scarcely a trace of the apical white; 

 the females, though somewhat more variable, tre universally 

 darker, the light led of the males being replaced in these by 

 dark russet, which is more or less obscured by the whitish tips 

 of the fur. " 



Mr. Allen inclines to the belief that the following species is 

 merely a variety of the present one. Ac least, they are very 

 similar and extremely variable. 



I regret that no opportunity has been afforded to compare 

 the osteology of the two species, but probably the description 

 given will apply with very slight exception to this form. 



Length 1.9-2.0, tail 1.9-2.0, fore arm 1.6, tibia 0.9, longest 

 finger 3.5, thumb, 0.45, ear 0.5, tragus 0.3, expanse of wings 

 12.0. 



This is a widely distributed species not very common in Min- 

 nesota. 



Lasiurus cinereus BEAUVOIS, SP. 



HOARY BAT. 



Vespertilio cinereus PALISOT DE BEAUVOIS. Cat. Peale's Mus. 1796. 



LECONTE. Proc. Phila. Acad. Sci., 1855. 

 Vespertilio pruinosus SAY. Long's Exped. to Rocky Mts., 1823. 



HARLAN. Fauna Amer., 1825; Med. and Phys. Researches, 

 1831. 



GODMAN. Amer. Nat. Hist., 1826. 



RICHARDSON. Fauna Bor. Am., 1829. 



COOPER. Ann. Lye. N..Y. iv, 1837. 



DEKAY. Nat. Hist., N. Y. (Zool.), 1842. 

 Scotvphilus pruinosus GRAY. Mag. Zool. and Bot. ii., 1838. 



