1898.] NATURAL SCIENCES OF PHILADELPHIA. 317 



General characters. — Size medium (forearm 60-70) ; tail well- 

 developed ; incisors | ; ear conspicuously rimmed with white ; poste- 

 rior border of ear conch with well-developed angular projection im- 

 mediately above base ; general color dull rufous. 



Ears. — Ears about double length of muzzle; laid forward they 

 reach to anterior corner of eye. General form of ear as in Cynoj)' 

 terus brachysoma (see Dobson, Monograph of the Asiatic Chiroptera, 

 p. 28), but projection at base of outer margin sharply angled instead 

 of bluntly rounded. Tip of conch rather narrowly rounded off. A 

 slight, though distinct, concavity in posterior border immediately 

 below tip. Rim of ear with a conspicuous whitish border, about 1.5 

 mm. wide near base and narrowing to a mere trace at tip, but never- 

 theless continuous. Area occupied by white border on anterior mar- 

 gin distinctly thickened. Inner surface of ear conch with six in- 

 distinct cross ridges. Basal third of ear furred externally, the 

 remainder naked inside and out except for a few hairs along ante- 

 rior margin. 



Membranes. — Membranes thick and leathery, broad and ample. 

 Interfemoral membrane deeply emarginate, only 6 mm. wide in 

 middle. Wings from sides of back and middle of outer toe. 



Fur and color. — Throughout the body the fur is short and scant, 

 that on the middle of back only 6 mm. in length. In males it is dis- 

 tinctly longer on sides of neck (10 mm. in type), and in both sexes 

 it is much shorter on throat and on sides of body (this especially 

 noticeable in females). The fur of the body extends to middle of 

 forearm, both above and below, but does not reach the membranes 

 except in middle of uropatagium. Propatagium thinly haired below 

 through proximal half. Wings with scattered hairs below along 

 sides of body and behind forearm. 



General color of two males (skins) burnt umber, to a varying ex- 

 tent tinged with red and overlaid with olivaceus, darker on crown 

 of head and paler along middle of belly. A female is paler through- 

 out, the general color more closely approaching the chestnut and 

 russet of Ridgway. Ears and membranes of dry specimens black- 

 ish, the former edged with dirty yellowish-white. Metacarpals and 

 phalanges of fingers varied with whitish, which irregularly involves 

 the membrane close to the bone. 



Skull. — The skull is strongly built and moderately angular. Old 

 individuals show a tendency to form a sagittal crest. Face line 

 slightly concave immediately behind tip of rostrum, then nearly 



