5. RnYNGTtONYCTEEIS. 367 



1. Rhynchonycteris naso. 



Vespertilio naso, Wied, Schinz, Thierreich, Bd. i. p. 179 (1821); 



Beitr. ziir Natiirgesch. Brasil. Bd. ii. p. 274 (1826). 

 Pioboacidea saxatilis et rivalis, Spiv, op. cit. p. 62, pi. xxxv. fig. viii. 



Emballonura lineata, Temminck, Monogr. Mammal, ii. p. 297 (1835- 



41), vide Peters, I. c. p. 478. 

 Rhynchonycteris naso, Peters, I. c. 



Ears shorter than the head, very narrow above and subacutely 

 pointed; inner margin of the ear-conch arising above the eye, 

 slightly convex below, straight or faintly concave above to the tip, 

 outer margin abruptly concave immediately beneath the tip, becoming 

 shghtly convex about the middle, with an acute emargination op- 

 posite the tragus, cutting off a M-eU-defined circular antitragus, 

 beyond which it terminates on a level with the angle of the mouth, 

 but much nearer to the base of the tragus ; tragus much longer than 

 broad, slightly inclined forwards, rounded off narrowly above, the 

 outer and inner margins slightly convex, no distinct lobule at the 

 base of the outer margin. Upper extremity of the muzzle produced 

 far beyond the canines and the lower lip (Plate XX. fig. 4), conical, 

 pointed, terminated by the slightly projecting inner margins of the 

 nasal apertures, which form long ovals placed horizontally, opening 

 sublateraUy, separated by a slightly concave space not equal in 

 width to half the diameter of one nostril ; lower lip with two pro- 

 minent naked pendulous papillse. 



Calcanea much longer than the tibia, nearly equal to half the 

 length of the forearm, their extremities projecting more than one 

 tenth of an inch beyond the membrane ; wing-membrane extending 

 to the ankles or tarsus. 



Above, dark brown, the extremities of the hairs greyish ; beneath, 

 dark brown at the base, the extremities grey, so that the whole 

 under surface appears white. 



The muzzle in front of the eyes is covered with short fur and a 

 few long hairs, the inner side of the ear-conch is clothed with some 

 greyish hairs ; the antebrachial membrane is thinly covered with 

 some short grey hairs, which are most abundant near the forearm, 

 while similar hairs, arranged in small tufts, form a band on the 

 wing-membrane along the forearm almost to the carpus ; the fur 

 of the body extends upon the wing-membrane as far as a line drawn 

 from the distal third of the humerus to the knee, beyond this be- 

 coming very short and arranged in tufts along the oblique linos with 

 which the membrane is marked ; the interfemoral membrane is 

 thinly covered with moderately long fur as far as a line connecting 

 the ankles when the limbs are extended ; beneath, the antebrachial 

 membrane is naked, and the wing-membrane is clothed with soft 

 grey fur as far as a line drawn from the elbow to the distal third 

 of the humerus, beyond which it does not extend ; nearly the whole 

 of the inferior surface of the interfemoral is thinly covered with 

 very short hairs. 



