1889.] OOJ [Allen. 



distance of 2 mm. The outer border of the auricle not scalloped on the 

 line of the external basal ridge, but is uniformly rounded. The revolute 

 margin reaches as far as the anterior border of this ridge. The inner 

 border of the auricle retains si.K small marginal spines. The tragus is 

 small pointed, or obscurely notched on the summit, and is but ^ mm. high. 

 The antitragus, as wide as high, much narrower above than at base ; the 

 notch posterior to it is well defined and reaches half way to the base. 

 The external basal ridge is rudimental. Tlie keel is not highly devel- 

 oped and measures 7 mm. in length. The first and fifth toes are thicker 

 than in 2V. brasiliensis. 



The tip of the third phalanx of the fourth finger is without projecting 

 lobe. 



The lips and adjacent surfaces are more tumid than in N. hrasiliensis. 

 The postmental wart is especially conspicuous as compared to the same 

 structure in that species. As in N. hrasiliensis, a medium ridge lies between 

 the wart and the lower lip. 



Measurements of Head and Ears. 



mm . 

 Distance from interauricular membrane to end of 



muzzle 3 



Height of auricle IB 



Distance of auricle to angle of mouth 2 



Width and height of antitragus 3 



In the entopatagium* the intercosto-humeral nerve divides into two 

 terminal branches at the upper third of the wing membrane before reach- 

 ing the elbow. 



Four oblique lines in the positions of the intercostal nerves can be dis- 

 cerned. 



The mesopatagium with the internal cutaneous nerves mucl\the same 

 as in N. brasiliensis ; but the superior branches are much less numerous 

 than in that species. Tlie distal end of the second phalanx of the fifth 

 finger is spatulate. 



The nerves on the interspaces the same as in N. hrasiliensis. First 

 oblique band at radio-carpal angle attached at side of palmar surface of the 

 muscle mass of the fifth metacarpal bone and passes downward and 

 inward at an angle to the radius for a distance of 4 mm. The pouch is 

 conspicuous. 



The tendon of the palmar interosseous muscle extends from the middle 

 of the fifth metacarpal bone to the distal end of the first phalanx. 



Fur on the back of a delicate fawn inclining to brown at the shoulders. 



* For explanation of the terms endopatagium, and mesopatagium, see Proc. Acad, of 



Nat. Sci., Philadelphia, 1889, p. 314. 



