84 RHINONYCTERIS. 
Onn 1—1 2— 3—3 
Dentition.—I. 4, C. 3, P. $3, M. =$=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, pl. viii. fig. 
2 (front view of head); Gould, Mamm. Austr. iil. pl. 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 cordiform with the 
base upwards, the sides thickened, the centre with or without a 
projecting point or narrow longitudinal ridge in front. No 
antitragus. 
oo 2 i 2—2 pe 
Dentition.—I. 5, C. >, P- , M.S = 30. 
Habits.—Insectivorous. 
Note.—The generic title Phyllorrhina used by Bonaparte in 
1831 for these Bats is inadmissable, no description having been 
given (see Blanford, Proc. Zool. Soc. 1887, p. 635). 
1. HipposipERUS 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 
