148 PIT-NOSE BAT. 
but differs in its colour^ being of a pale yellowish 
ash-brown. Its principal character is a remark- 
able transverse concavity situated on the forehead, 
lined with a naked blackish skin : the nostrils are 
seated in a similar concavity at the tip of the nose. 
It is a native of India. The circumstance of the 
frontal cavity is not absolutely peculiar to this 
animal, having been observed, though in a much 
less conspicuous degree, in another species : the 
use of this peculiar formation seems as yet un- 
known. 
