2. PTER0PU8. 21 



(/". Interfemoral wider, not concealed by 

 the fur behind. 

 ^. Ears longer than the muzzle, attenu- 

 ated above and acutely pointed. 



24. Muzzle and ears shorter ; inter- 

 femoral less developed in the [p. 47. 

 centre ; forearm 6"'6 Pt, chrysoproctus, 



25. Muzzle and ears much longer; 



interfemoral 1 inch wide in the [p. 48. 



centre ; forearm 7"'2 Pt. pUronotus, 



(f. Wings from the sides of the back, which 

 is covered with short appressed fur. 

 h^. Premolars and molars without antero- 

 intemal basal projections. 

 h''. Interfemoral membrane well deve- 

 loped in the centre, not concealed 

 by the fur. 

 A". Ears much longer than the muzzle, 

 attenuated and acutely pointed. 

 a. Face reddish brown. 



26. Larger: forearm 8''-8; chest 

 and abdomen dark reddish 



brown or black Pt. edulis, p. 49. 



27. Smaller: forearm 6"-6; 

 chest and abdomen bright 



bay or pale yellowish Pt. meditis, p. 51. 



(3. Face black. 



28. Smaller than Pt. medius ; 

 forearm 6", wings nearer the 



spine ; premolars with a small [p. 63. 



posterior basal projection . . Pt. edwardsii, 

 ?'. Ears scarcely as long as the 

 muzzle, conical, obtusely point- 

 ed ; forearm 6"-5. [p. 54. 



29 Pt. nicubaricuSi 



t'. Interfemoral membrane narrow in 

 the centre, nearly concealed by 

 the long fur. 

 j^. Eyes surrounded by fur not dif- 

 fering in colour from that of the 

 adjacent parts of the face. 

 y°. Ears very broadly roimded off 

 above. 

 30. Fur deep black, with con- 

 spicuous yellow tufts over [p. 55. 



shoulder-glands Pt. livingstonii, 



k^. Ears not longer than the 

 muzzle, conical, more or less 

 pointed.. 

 «. Last upper molar with a 

 nearly circular crown. 

 a'. First upper premolar de- 

 ciduous; premolars and 

 molars witnout posterior 

 basal projections. 

 31. Larger, forearm 7' ' ; 

 breast and abdomen dark 

 brown or black Pt. alecto, p. 66. 



