84 RHINONYCTERIS. 



Dentition. I. |, C. ^, P. |=?, M. f5 = 30. 

 Habits. Insectivorous. 



1. RHINONYCTERIS AURANTIA, Gray, sp. (1845). 

 Orange Horseshoe Bat. 



Head long ; muzzle thick, obtuse, and flattened laterally. Ears 

 shorter than the head, with acutely pointed tips ; the inner margin 

 of the conch regularly convex. Nose-leaf broad, overhanging the 

 muzzle, the sides of the horseshoe with a slight notch succeeded 

 by a small rounded projection in the centre of each side, and from 

 the centre of the base a small pointed process projects forwards 

 and upwards. Wings from the distal extremity of the tibia or 

 from the ankles. Calcanea feeble. Extreme tip of tail projecting. 

 Fur everywhere golden. 



Dimensions. Head and body about one and six-sevenths inch ; 

 tail rather more than an inch. 



Habitat. North and North-west Australia. 



References. Dobson, B.M. Catal. Chiropt. p. 126, pi. viii. fig. 

 2 (front view of head); Gould, Mamm. Austr. iii. pi. xxxv. 



Genus III. HIPPOSIDERUS, Gray (1831). 



Anterior nose-leaf like that of Rhinolophus, but not emarginate 

 in front ; the posterior erect, with a convex, lobed, or incised free 

 edge, concave in front, the concavity simple, or divided by narrow 

 vertical ridges into shallow cells ; the middle portion forming the 

 posterior boundary of the depression at the bottom of which the 

 nasal orifices are placed, is usually broadly cordiforin with the 

 base upwards, the sides thickened, the centre with or without a 

 projecting point or narrow longitudinal ridge in front. No 

 antitragus. 



Dentition. I. f , C. -}-=-}, P. |=| M. f=f = 30. 

 Habits. Insectivorous. 



Note. The generic title Phyllorrhina used by Bonaparte in 

 1831 for these Bats is inadraissable, no description having been 

 given (see Blanford, Proc. Zool. Soc. 1887, p. 635). 



1. HIPPOSIDERUS CERVINUS, Gould, sp. (1853). 

 Fawn- colored Horseshoe Bat. 



Ears much shorter than the head ; lower third of the outer 

 margin of conch with a small, acutely pointed projection. Horse- 

 shoe much narrowed in front of the nasal apertures with two 

 external secondary leaflets. Frontal glandular sac large. Thumbs 



