LVI. 

 Silvery-bat, Silver-haired Bat or Black-bat. 



Lasionycteris jjoctivagans (Le Conte). 



{Lasionyclcris, from Gr. lasios, hairy; nycieros, a bat, and L. noctivagans, from nociis, 

 of the night; vagans, wandering.) 



Vespertilio noctivagans Le Conte, 1 83 1, McMurtrie's Cuvier, 



An. King., I, p. 431. 

 Lasionycteris noctivagans Peters, 1 865, Monatsb. Akad. 



Berlin, p. 648. 



Type Locality. — Eastern United States. 



French Canadian, la Chauve-souris argent'ee. 



In addition to the Family and sub-family characters, the 

 genus Lasionycteris (Peters, i865) has short broad ears, broad 

 tragus, and partially furred tail-flap, 2 mammae, and teeth as 

 follows : 



T 2-2 i-i 2-2 , -z-:^ . 



Inc. ; can. ; prem. ; mol. =30 



1-3^ i-i l-l l-i 



The present species is the only member of the genus. 



SIZE In length it is 3I to 4^ inches (95 to 105 mm.); forearm, 



about if inches (42 mm.); tibia, about | of an inch (16 mm.); 

 tail, about equal to forearm; spread, about 11^ inches (292 

 mm.). For head, see Fig. 264, p. 1148. 



COLOUR Fur, very dark brown, silver-tipped with white; this frost- 



ing confined chiefly to the back, and more conspicuous in the 



IIGG 



