106 BULLETIN 43, UNITED STATES NATIONAL MUSEUM. 



appear to advantage against the depression in the face directly back of 

 tliem. Snont is broad, scarcely emarginate. Width between nostrils 

 greater than distance from mouth to top of snout. Upper lip slightly 

 pendulous at the side. Mental x>late well defined inferiorly. Dobson 

 states that the inner margin of the tragus appears to be in the angle 

 between the free projection of the internal basal lobe and the conch. 

 This must be an individual variation or an error of observation. 



Dorsum fur long and silky, of a dark brown, black at the basal two- 

 thirds or four-fifths, the apical portion becoming abruptly gray or white. 

 The head and neck almost entirely brown-black, the silvery appear- 

 ance not being sufficient to give character to the region. Occasionally 

 the hair of the face, both above and at the sides, will be of the dominant 

 color, while the crown and nape will be of the same character as the 

 body. 



Below the fur is of the general character of the dorsum, but slightly 

 shorter. The postmental region nearly naked, the rest of the neck 

 scarcely silvery, as on the dorsum of face. 



The prebrachium with distinct tendon of occipito-pollical muscle. 

 Three conspicious intercostal lines are discerned. 



The coraco brachialis fascicles rises high up near the axilla. The 

 triceps fascicle system with vertical oblique and horizontal lines dis- 

 cernible. None of the terminal lines of the foregoing, reach the free 

 margin of the wing-membrane. 'No vertical lines apart from the fore- 

 going are discernible. The obliquetibial line arises from near ankle and 

 extends as far as the intercosto-humeral at the elbow. 



A delicate forked line extends downward and somad from the lower 

 part of muscle mass at the proximal end of the fifth metacarpal bone. 



The fourth interspace exhibits the predigital nerve appearing in a 

 well-defined elevated fold of membrane at the side of the nuiscle-mass 

 just named. The line forms a curve and extends about one-half way 

 down the shaft of the fifth metacarpal bone, when it is lost along the 

 line of the shaft. The main branch of the nerve arises from the middle 

 of the curve and passes downward and forward, but does not extend 

 beyond the middle of the interspace, nor quite to its free border. The 

 postdigital nerve arises high in the interspace, apparently from the 

 palm, approaches the fourth metacarpal bone at its proximal end, but 

 soon leaves it and is distributed to the anterior half of the interspace. 



The third interspace shows a delicate line from the first interphalan- 

 geal joint of the fourth finger and a second longer oiie from the meta- 

 carpophalangeal joint of the third finger. 



The interfemoral membrane shows the oblique line (above) as a caud- 

 otibial, since it arises from the side of first caudal vertebra. The trans- 

 verse lines on the interfemora membrane are regularly disposed and 

 marked with minute pilose warts. 



The terminal phalanges much the same as in Atalapha. The parts 

 are all delicate; the terminal phalanx of the third digit is sigmoid aud 



