9. NOCTiLio. 395 



extremity of the nose projecting beyond the lower lip ; nostrils close 

 together ; nasal apertures oval, directed forwards and slightly out- 

 wards, terminating the muzzle, the projecting nose overhanging the 

 upper lip, which has a prominent elevation in the centre beneath 

 directly in front of the upper incisor teeth ; sides of the upper lip 

 pendulous, with a convex margin ; lower lip folded outwards on the 

 sides to allow room for the very long upper canines, at the angles of 

 the mouth enclosing the upper lip ; centre of the lower lip forming a 

 naked prominence in front of the lower incisors ; chin and under sur- 

 face of the lower jaw with several prominent ridges, whereof the 

 most anterior is a small triangular, anteriorly concave, lappet, from 

 the back of which two small erect ridges extend backwards and out- 

 wards ; more posteriorly a slightly raised cutaneous ridge, correspond- 

 ing to the position of the rami of the lower jaw, includes a prominent 

 wart in front, and forms externally the internal boundary of a 

 space occupied by corrugated skin (see Plate XXI. fig. 9, head of 

 iV". alhiventer). 



Thumb rather short, with a very acutely pointed claw ; wings 

 from the distal third of the tibia and from the sides of the back close 

 to the spine ; interfemoral membrane very large, extending far be- 

 yond the short tail when expanded in flight, but in repose folded up 

 very completely beneath it ; feet remarkably large and strong, armed 

 with extremely acute and much curved claws. 



Fur bright reddish yellow above and beneath, the fur of the under 

 surface slightly paler in colour. On both surfaces the hair is 

 short and does not extend to the membranes, on the back across 

 the loins it scarcely occupies a space three quarters of an inch in 

 width. 



Central upper incisors touching by their inner sides, but separated 

 at their bases and at their extremities ; outer incisor on each side 

 very small, scarcely raised above the gum, its summit hardly as high 

 as the cingulum of the inner incisor, close to the posterior and ex- 

 ternal sides of which it is placed, being separated from the canine 

 by a wide space ; upper canines remarkably long, pushing the lower 

 lip downwards before them, their outer margins are convex, their 

 inner concave ; the single upper premolar close to the canine ; molars 

 touching by their adjacent external cusps, but separated by narrow 

 spaces at their bases ; last molar equal to half the antepenultimate 

 molar ; lower incisors small, bifid, filling up the narrow space be- 

 tween the canines ; the two lower premolars are placed obliquely 

 across the jaw, and crushed in between the canine and the first 

 molar ; the first is about the size of one of the lower incisors, is 

 placed in the inner angle between the canine and the second pre- 

 molar, and is not visible from without ; the second is nearly equal to 

 half the first molar, and its long diameter is directed inwards and 

 backwards ; the three molars then f oUow in regular succession, placed 

 at right angles to the direction of the mandible, their very acute 

 cusps received into the spaces between the upper molars and between 

 their cusps, so that in the closed condition of the jaws the lower 

 tooth -row is almost completely hidden. 



