50 MR. W. LECHE ON CHIROPTERA FROM AUSTRALIA. [Feb. 5, 



The first lower premolar is as high as the cingulum of the second. 



Measurements (female). 



millim. 



Length, head and body 57 



head 21 



tail 33 



,, tail, free from membrane 12 

 „ ear, outer margin .... 1 G 



,, tragus 3 



,, forearm 34 



„ third finger, metacarpal 36 

 „ fifth finger, metacarpal 24 

 „ tibia 10 



The male is considerably smaller. 

 Hub. South Australia. 



2. Nycttnomus albidus, sp. nov. 



This species is most nearly related to Nyct. aus trail's, Gray, which 

 has otherwise a rather isolated position in the genus. From the 

 last-named form it deviates through the facts : — (1) that the ears 

 are much longer than the head and united by a low band, whereas in 

 Nyct. australis they are shorter than the head and separate ; (2) 

 the integument forming the ear-conch is thick and opaque, whereas 

 ill Nyct. australis it is rather thin ; (3) in Nyct. australis a narrow 

 band of hair extends outwards behind the forearm and covers the 



Nyctinomus albidus ; natural size. 



space between it and the upper third of the fourth metacarpal ; this 

 covering of hair is lacking in Nyct. albidus ; (4) concerning the 

 adult male of Nyct. australis, Dobson (Catalogue of Chiroptera in 

 British Museum, 1 878, p. 433) states that " the fur covering the 

 wing-membrane beneath, between the humerus and femur and the 

 sides of the body outwards, is pure white, contrasting strongly with 

 the dark-brown fur of the body," and furthermore that it is provided 



