230 Miller — A New Genus of Bats from Sumatra. 



Phoniscus atrox sp. nov. 



Type from the vicinity of Kateman River, eastern Sumatra. No. 123,141, 

 United States National Museum. 9 adult (in alcohol). September 9, 

 1903. Dr. W. L. Abbott. Original number, 2781. 



Characters. — In size and general appearance not unlike Kertvoula Itard- 

 wickii, but form less slender, and tail distinctly shoi'ter than head and l)ody ; 

 metacarpal of fifth finger slightly but distinctly shorter than that of fourth ; 

 dorsal surface of leg, foot, forearm, thumb, second finger, and last joint of 

 third finger closely sprinkled with fine hairs; fur of neck noticeably longer 

 than that of back, each hair with four sharply defined rings of color ; skull 

 more robust than that of Kerivoula hardwickii, the braincase much deeper 

 relatively to its width. 



Color. — Fur of upi^erparts with four color rings. Beginning at base 

 these are (1) prouts-brown, (2) light, yellowish broccoli-brown, (3) prouts- 

 brown darker than the first, and (4) a metallic golden orange. The gene- 

 ral effect is a conspicuous, changing mixture of the orange and the dark 

 brown, the former in excess except when the hairs are disarranged. Under- 

 parts between broccoli-brown and hair-brown, the hairs becoming much 

 darker on proximal half, and in certain lights showing faintly golden tips, 

 especially across chin and throat. Membranes and ears blackish, the 

 tragus whitish in strong contrast. 



Measuremeni.'i.— 'External measurements, those of the second specimen 

 (adult female. No. 123,142) in parenthesis : Head and body, 43 (46) ; tail, 

 38 (37); tibia, 14 (15); foot, 7.4 (7.6); forearm, 34 (.35); thumb, 7 (6.4); 

 second finger, 33 (31); third finger, 73 (71); fourth finger, 53 (52) ; fifth 

 finger, 49 (49); ear from meatus, 13 (13.6); ear from crown, 10 (9.6); 

 width of ear, 11 (11.6). 



