2. AMOUPHOCHILTTS. 357 



forwards, the extremity of the muzzle almost concealed by the long 

 hairs fringing the sides. Thumb exceedingly short, contained to 

 the base of the very small claw within the antebrachial membrane ; 

 first phalanx of the middle finger very short, not equal to the first 

 phalanx of the third finger in length, partially flexed (in repose) 

 upon the dorsal surface of the metacarpal bone. 



Wings from the tarsus ; feet small ; claws long and strongly 

 curved ; near the base of the claw on the plantar surface of the 

 fifth toe a small wart is placed ; calcaneum as long as the tibia ; 

 interfemoral membrane very large, as long as the head and body ; 

 tail terminating in the membrane opposite the ankles. 



Eur long and dense, extending upon the wing-membrane along 

 the sides of the body only, and leaving the remainder of the wings, 

 the arm-bones, and the tibias naked ; also upon the interfemoral 

 above as far as the end of the second caudal vertebra ; beneath, 

 thinly covering the greater part with fine thinly spread hairs ranged 

 along the transverse lines. The sides of the muzzle to the very end 

 of the nose are densely covered, and the long thick fur quite con- 

 ceals the angles of the mouth ; the chin is similarly covered. 



Above and beneath slate-blue, darker towards the extremities of 

 the hairs above, paler beneath. 



Upper incisors in pairs, separated in the middle, but removed 

 from the canines on either side by a wider space, very short, the 

 inner incisor slightly larger than the outer one, and with a small 

 second external basal cusp, the pair of incisors on each side directed 

 inwards and forwards ; lower incisors very small, trifid, not crowded ; 

 upper canines with a smaU anterior and larger posterior basal cusp ; 

 first upper premolar in the centre of the space between the canine 

 and second premolar, unicuspidate, and inclined slightly forwards ; 

 second upper premolar with an anterior and internal basal pro- 

 jection ; last upper molar three fourths antepenultimate molar ; 

 lower canines very small and slender, nearly equalled by the second 

 premolar in vertical extent, and exceeded by it in cross section ; 

 first lower premolar like the corresponding tooth above, but smaller ; 

 molars with five acutely pointed cusps, last molar smaller, with 

 four. 



(For measurements see p. 358.) 



Hah. South America (Surinam, Brazil). 



a. 5 ad., al. Surinam. Berlin Museum [E.]. 



2. AMORPHOCHILUS. 



Amorphochilus, Peters, MB. Akad. Berl. 1877, p. 185. 



Muzzle very obtuse in front, its superior front margin forming a 

 fleshy prominence above the nostrils ; nasal apertures triangular, 

 widely separated ; bony palate produced backwards as far as a line 

 corresponding to the centres of the zygomatic arches. 



Range. Chilian Subregion. 



