﻿14 



NORTH AMERICAN FAUNA. 



taiued two species, U. melanops and E. myclas.^ Uptesicus melanops is 

 without doubt the YespertUio fuscus of Beaiivois. U. mydas, however, 

 can not be identified (seep. 32). The first species must therefore be 

 taken as the tyjje. Since this species is congeneric with Vesperiilio 

 'inurinus Linimeus [=Yesperu()o discolor Natterer), the type of the genus 

 YespertUio, the name Epiesicus is a synonym of YespertUio. 



Euderma H. Allen, 1892 (Proc. Acad. Nat. Sci. Phila., 1891, p. 467, 

 publishefl Jan. 19, 1892), is the tenable name for the genus of which 

 Histiotus maculatus J. A. Allen is the type and only known species. 



Histiotus Gervais, 1855 (Exped. Comte de Castelnau Am. du Sud, Zool., 

 Mainmif , p. 77, PI. XII), was based on the South American Flecotus 

 velatus of Geoffroy. Euderma maculatum v^sis originally described as a 

 member of this genus, the name of which has not otherwise appeared 

 in the literature of Xorth American Yespertilionidce. 



Hypexodon Eafinesque, 1819 (Journal de Physique, de Chimie, d'His- 

 toire naturelle et des Arts, LXXXYIII, p. 417), can not be identified 

 with any known group of bats. The characters which Eafinesque 

 assigns to the type species^ may be those of a mutilated and distorted 

 specimen of some of the small species of Xycticeius, Pipistrellus, or Jlyotis. 



Hypsugo Kolenati, 1856 (Allgem. Deutsch. Xaturhist. Zeitg., Dres- 

 den, Xeue Folge, II, pp. 131, 167-1G9), is a synonym of Pipistrellus 

 Kaup. It was based on ' Yesperiigo^ manrus Blasius and ^ Y. ' JcrascJieni- 

 iiiltoicii Eversmann. 



Isotus Kolenati, 1856 (Allgem. Deutsch. Xaturhist. Zeitg., Dre.^^den, 

 Xeue Folge, II, pp. 131, 177-179), is a subgeneric name based on two 

 European species of '•YespertUio ' [nattereri and eUiatus) which have the 

 ear about equal in length to the head. It is of course a synonym of 

 Myotis Kaup, 1829, and of Selysius Booaparte, 1811. 



Lasionycteris Peters, 1865 (Monatsber. K. Preuss. Akad. Wiss., Berlin, 

 1865, p. 618), is the first name proposed for the genus of Avhich Yesper- 

 tUio noctivagans Le Conte is the onh^ known species. 



Lasiurus Gray, 1831 (Zoological Miscellany, Xo. 1, p. 38), Is the first 



^The original diagnosis of the genus Epiesicus is as follows: 



''I. X. G. EPTESICUS. Four acute fore-teeth to the upper jaw, in two equal pairs, 

 separated by a great interval and a large flat wart, each jiair has two unequal 

 teeth, the outside tooth is much larger and unequally bifid, the outside one much 

 larger, inside tooth small and entire. Six fore-teeth to the lower jaw, equal very 

 small, close and truncate. Canine teeth very sharp, curved and long. Grinders 

 unequally trifid. Snout plain, nose without appendages. Ears separated, auricu- 

 lated. Tail mucronate. — This genus appears to differ from all those of Geoffroy and 

 Cuvier, among the exteusive tribe of Bats. The name means house-flyer." 



-1. Xouveau genre. HYPEXODOX. (Chauve-souris.) Museau nu ; narines rondes, 

 saillantes; incisives superieures nulles, 6 inferieures emarginees, une verrue a la base 

 exterieure des canines inferieures. Queue engagee dans la membrane. Le reste 

 comme le genre Vesperiilio. — I espece R. nu/stax, entierement fauve, dessus de la tete 

 brun, ailes et membranes noires, queue mucron^e, des moustaches, oreilles brunes 

 auriculees, nervures inferieures et trausversales ; longueur totale, 3 pouces, dont la 

 queue 2 pouces. En Kentucky. 



