MEGADERMA., 85 
and feet small. Wing-membrane extending to the tarsus. Inter- 
femoral membrane of moderate size, triangular. Extreme tip of 
tail free. Fur reddish-brown, darkest above. 
Dimensions.—Head and body about two inches; tail about 
one inch ; forearm about one and three-fourths inch. 
Habitat.—York Peninsula; Aru Islands; Waigiou; New 
Guinea ; Duke of York Islands. 
References.—Dobson, B.M. Catal. Chiropt. p. 142, pl. ix. fig. 7 
(front view of head); Gould, Mamm. Austr. iii. pl. xxxiv. 
2. HIPPOSIDERUS BICOLOR, Zemminck, sp. (1835-1841). 
var. a. H. aruensis, Gray (1858). 
Brown Horseshoe Bat. 
Ears moderate, about equal in length to the head, oval ; the 
upper third of the outer margin straight. Horseshoe small and 
square, scarcely as wide as the transverse terminal leaf, the concave 
front surface of which is divided into four cells by three distinct 
vertical ridges ; no secondary leaflets ; frontal glandular sac well 
developed in males, rudimentary in females. Wing-membrane 
extending to the ankle or tarsus. Interfemoral membrane slightly 
angular behind. Extreme tip of tail free. Fur above very dark 
brown, almost black ; below grayish-brown. 
Dimensions.—Head and body about one and three fourths inch; 
tail rather less than an inch; forearm about one and a half inch. 
Habitat.— Albany Island, Cape York ; Aru Islands. 
Reference.—Dobson, B.M. Catal. Chiropt. p. 150. 
Family IZI.—NYCTERIDAs. 
Nasal apertures situated upon the upper surface of the muzzle, 
and margined by distinct cutaneous appendages. Ears large, 
united, with well developed tragi. Index finger with or without 
a short phalanx. Premaxillary bones cartilaginous or small. 
Upper incisors absent or very small; when present close together. 
Subfamily I.—MraaprermMina. 
Nostrils at the bottom of a concavity near the extremity of the 
muzzle, concealed by the base of a large cutaneous process ; tail 
very short, in the base of the large interfemoral membrane ; pre- 
maxillaries cartilaginous. 
Genus I.—MEGADERMA, Geoffroy (1810). 
Muzzle cylindrical, elongated. Nostrils in a slight depression 
near the extremity of the muzzle, surrounded by a naked cutane- 
