32 CHEIROPTERA. 



off at the base; the tragus is widest at the middle, its 

 point much sharpened, and inclining forwards and in- 

 wards ; at the base of its outer margin is a small blunt 

 tooth ; the membrane of the wings reaches to the first 

 joints of the toes ; the two last joints of the tail are free 

 from the membrane, which is hairy above and below 

 next the body ; beneath, the hairs extend to the fore-arm, 

 the thighs, and more than half-way along the tail; the 

 skin of the ears and wings is very dark brown-black, 

 darker than in any other European species. The fur 

 above is dark brown, lighter below ; the hairs are every- 

 where of two colours ; on the upper parts they are dark 

 brown beneath, with yellow or reddish-brown tips ; on the 

 under parts of the body they are also dark beneath, with 

 the tips a much lighter brown ; the bright brown of the 

 upper parts distinguish this species from all others; the 

 young ones are darker, with dirty white tips to the hairs. 



The entire length is 3 inches 2 . ines ; tail, 1 inch 

 3 lines ; extent of wing, 8 inches 6 lines. — F. M. 



First observed in 1847 by Professor Blasius, who states 

 that it occurs only at high elevations, and who names it 

 the Alpine Bat; sometimes it appears above the region 

 where trees grow. It comes out soon after sunset, flies 

 quickly and high, concealing itself in the daytime in the 

 roofs of the chalets. 



Is found in suitable situations all along the range of 

 the Alps. 



