Alleu.J 5t)U [Oct. 4, 



The back of the neck and head of a lighter shade. Back of the ear the 

 hair is almost white and covers the posterior surface to a point just beyond 

 the line answering to the keel. The fur of the venter is of a uniform light 

 brown hue, verging to white. The wing membranes and tail membrane 

 are of a brown color and are naked, excepting along a line continuous on 

 the dorsum from the shoulder to the middle of the thigh. A delicate line 

 of fur extends from the upper third of the arm to the middle of the thigh. 

 The fur of the trunk both at the shoulder and thigh is continuous with this 

 line, but on the entopatagium the hair is absent alongside of the body. 



On the venter the foot and the distal third of the tibia are the only parts 

 seen of the lower extremity, the remaining parts are concealed by a fold of 

 skin which extends from tlie pubis to the lower third of the tibia. 



The tail membrane with distinct pelvo-tibial line, but without the line 

 from knee which is seen in N. brasiliensis. The free margin of the mem- 

 brane without the lobe which is so well seen in the species last named. 



The Cranium. — The superior angle of the occiput is more acute than in 

 N. brasiliensis and smaller by one-half. The temporal crest is distinct 

 throughout its entire length. In N. brasiliensis it is absent except at the 

 anterior half. The dorsum of the face is without the groove so character- 

 istic of iV. brasiliensis. The anterior nasal aperture is ovate, not cordate, 

 as in the species last named. The lachrymal process is conspicuous and 

 trenchant. The zygomata are of uniform width. The mentum is 

 recedent ; the posterior border being on a line which extends between the 

 second premolar and the first molar. The coronoid process is scarcely 

 higher than cond^^loid ; the angular process projects well back of the 

 condyloid. 



Measurements. N. europs. N. brasiliensis. 



mm. mm. 



Length 16 17 



Width between zygomata posteriori}' 9 10 



"Width of cranium at narrowest part 3 4 



Distance from anterior edge second pre- 

 molar to end of face 2i 1^ 



The Teeth.— 



Incbl. c.l-J.pm.Mm.^. 

 2-2 1-1 i!-2 3-3 



Upper incisors near together their entire length. Interval between them 

 much less than in N. brasiliensis. First premolar lies to outer side of the 

 postero-basal cingule of the canine, which almost touches tlie second pre- 

 molar. In N. brasiliensis the first premolar is in line with the cingule. 

 This distinction is associated with a shortening of the axis of the face 

 from the centre of the incisorial space to the first premolar. 



Lower incisors equal, bilobed, not crowded. 



