Allen. I 562 [Oct. 4, 



extends to the base of the autitragus. The antitragns is thin, broader than 

 high and slightly higher posteriorly tlian anteriorly. A skin fold extends 

 from the antitragns to the angle of the mouth. The tragus is quadrate 

 and bears a general resemblance to that in iV. brasiliensis. The sides of 

 the lace are without folds. 



The fur on the dorsum is fawn color with paler tints at the base. It 

 extends half way up the ears. On the dorsum the proximal half of the 

 arm, the endopatagium near the body, and the basal fourth of the tail are 

 covered with hair. On the venter the color is the same as on the back, 

 except on the lace and ears, where it is of a dark chestnut. The venter, 

 the arm, the thigh and entopagium half way to the elbow are covered 

 with a thin layer of fur. The face is occupied by a number of stout bristles 

 between the ears and the muzzle. Two hairs, 1 mm. long, project from 

 the mental wait. 



The following notes have been made on the terminal digits. That of 

 the third digit of the third finger is little over 5 mm. in length, is slightly 

 curved toward the trunk at the tip. A thin membrane is seen at the distal 

 half at the thumb side. The wing membrane extends to the tip toward 

 the trunk. 



The terminal digit of the fourth finger is 3 mm. long. The membrane 

 is not attached to the somad surface ; while on the pollicad surface it is 

 attached the entire length of the digit. The phalanx is markedly deflected 

 on the free margin of the membrane and ends in a free lobe. 



The terminal phalanx of the fifth finger is slightly curved somad. It 

 is 3 mm. long, and nearly 1 mm. wide at base. The membrane is attached 

 to the second phalanx at the middle of the pollicad margin, but reaches to 

 the tip of the phalanx on the somad side. 



No entopatagial lines are seen, rhe internal cutaneous line exhibits a 

 superior branch. The nerve ends abruptly by inferior vertical branches 

 as in N. hrasiliensis. A line is seen on the interfemoral membrane extend- 

 ing from the middle of the thigh to the free margin of the membrane. 



Cranium. — The cranium is of the type of iV". macrotis. The facial region 

 is high, the nasal bones at the anterior nasal aperture being the highest 

 point of the vertex. The upper border of the aperture is defined by a trans- 

 verse line, which forms a right angle with the lateral border. A line drawn 

 downward from the border intersects the infraorbital foramen at its poste- 

 rior limit. The zygoma is without elevation. The ethmoidal swelling 

 (by which term is meant the swelling, in the orbito-temporal fossa, of 

 the frontal bone over the ethmoid) is rounded. The palatal rugte oppo- 

 site the molars abruptly angulated, the angle being forwards. 



In contrast to the above, the skull of N. macrotis presents the fol- 

 lowing : The facial region at the anterior nasal aperture is the lowest 

 part of the vertex. The upper border of the aperture is A^liaped. A 

 line produced downward lies in front of the infraorbital foramen. The 

 zygoma with posterior elevation. The ethmoidal swelling is ridge-like. 



