302 Mr. 0. Thomas on new Mammals 



groove. Ears separate, not connected across the head. 

 Tail short, perforating the interfemoral membrane and 

 appearing on its upper surface. Wing-raerabrane from the 

 side of the ankle. 



Skull thin and papery. Profile-line from top of muzzle to 

 crown nearly straight, not markedly concave. Anteorbital 

 region broad, with a distinct inflation just above the anterior 

 corner of eacli orbit, the breadth of the muzzle over the ante- 

 orbital foramina much greater than the postorbital breadth. 



Dentition.— I. f, C. |, P. f, M. f x 2 = 34. 



Upper middle incisors large, vertical, chisel-shaped, their 

 cutting-blades broad, very thin antero-posteriorly. Outer 

 incisors minute. Canines short, sharply pointed, their antero- 

 posterior basal about equal to their vertical diameter. Pre- 

 molars subequal, oval or rounded in section. Lower incisors 

 distinctly tricuspid, subequal. Canines low, scarcely ex- 

 ceeding the other teeth in height. Premolars subequal, the 

 median one fully as large as the other two. 



This genus is evidently most nearly allied to Micronycteris 

 {Schizostoma of Dobson's Catalogue), but differs by its uncon- 

 nected ears, broader muzzle, inflated anteorbital region, straight 

 frontal profile, and peculiar chisel-shaped incisors. No other 

 described genus shows its short tail, dental formula, and well- 

 developed middle lower premolar. 



Gly phony cteris sylvestris, sp. n. 



Externally very similar to Hemiderma hrevicauda, though 

 rather smaller *. Ears short, their tip forming an almost 

 square angle, the outer and inner edges distally being 

 approximately at right angles to each other j lower part of 

 outer edge ending in a low rounded lobule. Fur soft and 

 fine, not extending on to the wings or limbs, except that the 

 pollical metacarpals and the backs of the feet are thinly tufted. 

 Colour above mixed smoky grey, tlie hairs dark smoky basally 

 and terminally, white for their middle third ; below they are 

 smoky basally and dull whitish terminally. Interfemoral 

 membrane broad, extending in the middle line to the level of 

 the distal third of the tibise. 



Skull and teeth as described above. 



* This resemblance is so great that almost the only character which 

 affords a ready means of distinguishing the two is the short and delicate 

 thumb of Glyphonycteris as opposed to the long heavily clawed one of 

 Hemiderma. In colour the two are almost identical. 



