56 BULLETIN 48, UNITED STATES NATIONAL MUSEUM. 



deflued leaflet. The tapering tragus is less than half the height of the 

 auricle; basal notch scarcely defined; basal lobe semicircular, concave 

 above, projecting outward. Kostrils irregularly quadrate, reaching 

 almost to the top of the high muzzle; the borders slightly produced; 

 lower border furnished with a groove; sei)tum absent. Facial glands 

 not extended laterally, but raised toward dorsum of rostrum into a 

 prominent club-shaped mass. Lower lip not moveable, without mental 

 plate. 



The coraco-brochialis and triceps muscles not sending fascicles to the 

 wing-membrane. 



Postdigital nerve arises from the fourth metacarpal bone about mid- 

 way between the proximal and distal ends. The mesopatagium is pro- 

 vided with a system of muscle-fascicles which are dispersed obliquely 

 from above downward about midway between the forearm and the free 

 margin. Tail just below the iiubis is raised from the under surface of 

 the interfemoral membrane; for the rest of its extent it is raised from the 

 upper surface ; the tip is not exsert. The calcar is weak, extends less 

 than one-half the length of the free margin of the interfemoral mem- 

 brane and is without post-calcaral lobe. Foot slender, as long as the 

 thumb. 



Fur on the dorsum dark brown at apical one-third ; dark ash at basal 

 two-thirds; on the ventre the fur is light gray or white at apical one- 

 third; black at basal two-thirds. A sparse growth of hair is seen on 

 the base of the toes. 



Maxillary teeth. — Central incisor bifid-posterior cusp much the smaller. 

 Tooth placed at the edge of incisor notched and presents a convex 

 median border. Lateral incisor with long, aciculate cusp; concave on 

 palatal surface, oblique on lateral border, parallel with central tooth 

 on median border. In other respects the teeth as in G. townsendii (q. v.). 



Mandibular teeth. — These are the same as in G. toicnsendii, except 

 that the incisors are more crowded. 



Skidl. — The entire region of the vertex of the region of the mesen- 

 cephalon is elevated and defined laterally by the weak posterior tem- 

 poral crests. Greatest length 16'". Greatest width 8'" to 9i"'. Least 

 width 3". Length of mesencephalon 3"\ The length of face from the 

 orbit is 3™. Greatest height 5.05'°. Thus the height is absolutely 

 greater than in Enderma, while the length is much less. The sagittal 

 crest is absent over the posterior half of the vertex and extends to a 

 line which answers to the middle of the auditory meatus; the anterior 

 temporal impressions are faintly defined. The face- vertex with sharply 

 limited pit-like concavity, which is sharply separated from the anterior 

 nasal aperture. The region of the proencephalon is well defined above. 

 The fronto-maxillary inflation is most marked at the region of the or- 

 bit, but to a much less degree than in Euderma; the orbital ridge is 

 swollen and faintly marked. The facial opening of the infraorbital 

 canal lies 1""" above the tooth row. The outer wall is sharply crested, 



