m 



i\ Five Species of VtspertUio, 



BCriptiooa and comparisons tlian have been heretofore given, to 

 enable the student to determine them with as little difficulty as 

 their dose resemblance will permit. The materials for doing 

 this have bees derived partly from my own researches during 

 >i\( ral years past] and partly from the liberal communications 

 of my friends, especially Major Le Contcof this city, the Rev., 

 Dr. Bachman of Charleston, and Doctors Pickering ami Mor- 

 ton of Philadelphia. Through their assistance I have likewise 

 been enabled to make some interesting observations relative to 

 Other groups of this family, which I propose to communicate 

 as I find opportunity to prepare them for publication. I hope 

 in this manner to lay the groundwork for a complete account 

 of the Cheiroptera of the United States, which however much 

 to be desired, I have not at present the requisite materials to 

 undertake. 



1. Vespertilio riaiNcsis. 



\ • spertilio pruinosus, Sai in Long's Exp. I. p. 16S. Richard- 



-.in. r.iima Bor. Am. I. p. 1. 

 Nycticeiufl i< qgelatus, R if. ? 

 Hoary Bat, Godmazt, Am. Nat. Hist. I. p. 6S. PI. I. fig. 3-Rich. 



L c. 



Description! 



In the ire ne ral appearance of the upper parts it much re- 



sembles the common Red Bat, though more variegated in 



Colon The ears an' of moderate size and rounded, hairy 



above next the head, with a naked anterior lobej the inside 



al-o hairy, except on the OUter portion and round the border; 



tragus hairy, irregularly triangular, obtuse and arquated, with 

 the outer angle curved forward ami the inner attached. About 



tin- car- and front the eolor of the fur IS a pale tawnev, the 



remaining uppi r parts <>f the bod) including the flarixs and 

 interfemora] membrane, except a narroTi edging round the 

 latter, of a dark f. i in ginous, intermixed with dusky black on 



v i T 



