14. NATAitie. 343 



of the mouth : tragus broad at the base, abruptly narrowed above 

 and acutely pointed, the upper half twisted inwards and forwards, 

 so that more than half the inner margin is directed forwards ; 

 lower half of the outer margin very convex, the front and outer 

 surface clothed with a few long straight hairs (Plate XVII. fig. 8). 



Thumb very short, with a feeble claw, nearly whoUy enclosed in 

 the antebrachial membrane ; tibia remarkably long and slender ; 

 calcaneum convex backwards as in Kerivoula, very long, termination 

 indistinct ; tail much longer than the head and body, the extreme 

 tip alone projecting; wing-membrane attached across the end of the 

 tibia and ankle-joint to the interfemoral membrane and base of the 

 calcaneum ; membranes exceedingly thin, almost transparent, tra- 

 versed by numerous dotted lines. 



Fur, above, light brownish yellow ; beneath, similar but paler. 

 Membranes nearly naked ; a few very fine short hairs extend along 

 the tail and form a fringe along the free margin of the interfemoral 

 membrane ; on the face long hairs extend from the ears forwards 

 below the eyes to the small glands on the sides of the muzzle, form- 

 ing a deep fringe along the upper lip. 



Upper incisors short, in pairs, separated from the canines and also 

 in front, placed in a line across the space between the canines ; outer 

 incisor, on each side, exceeding the inner in cross section at the base, 

 but equal to it in vertical extent, both incisors unicuspidate ; lower 

 incisors minute, not crowded, placed in the direction of the jaws ; 

 first and second upper premolars about three fourths the size of the 

 third premolar, the second premolar nearer to the first than to the 

 third ; lower premolars equal in size, and in vertical extent equal- 

 ling the first molar. 



(For measurements, see Table on next page.) 



Hab. Brazil ; Central America. 



a. S ad., al. Brazil. 



b. ad. sk. South America. 



Var. u. 



In a specimen from Dueiias, Guatemala, collected by Mr. Salvin, 

 the ears are smaller and less pointed, the muzzle narrower, and the 

 wings attached to the tibiae higher up than in the typical example 

 of iV. stramineits. The wing-membrane becomes adherent to the 

 under surface of the tibia at the commencement of the distal third 

 of the tibia, and a band then extends across a much wider angle to 

 the calcaneum ; the colour of the fur is also much darker, being dark 

 reddish-brown above, slightly paler beneath, the extreme tip of the 

 hairs somewhat ashy. The measurements are also different, as may 

 be seen in the Table on next page ; but in the absence of other spe- 

 cimens, I hesitate to describe it as the type of a distnict species. 

 a. d ad., al. Duenas, Guatemala. 0. Salvm, Esq. [C.]. 



