22 PTEROPODIDiE. 



82. Smaller, forearm 5"'4 ; 

 breast and abdomen yel- 

 lowish brown or pale [p- 57. 



reddish yellow Pt. hypomdanus, 



(3'. First upper premolar per- 

 sistent; premolars and 

 molars with posterior 

 basal projections. 

 33. Fur reddish brown ; [p. 58. 



forearm 4" -8 Pt. tuherculatus, 



/3. Last upper molar narrow, 



much longer than broad, 



placed obliquely in the 



tooth-row. 



84. Fur dark brown, back 



greyish brown; forearm5"*7 Pt.fusms, p. .59. 

 P. Ears much longer than the 

 muzzle, attenuated above and 

 acutely pointed. 

 35. Fur, except on the back of 

 the neck, very dark-coloured, 

 thighs clothed above and be- 

 neath ; forearm 6"'6 Pt. gouldii, p. 60. 



k". Eyes surrounded by more or less 

 conspicuous rings of paler-co- 

 loured fur. 



36. Ears longer than the muzzle ; [p. 61. 

 forearm 7" J¥. cons^ncillatuSf 



37. Ears shorter than the muzzle ; 



forearm 5"'35 P^. ocularis, p. 62. 



°. The third upper premolar and first 



molar with more or less distinct 



antero-intemal basal projections. 



f. Interfemoral membrane very narrow 



in the centre, concealed by the fur. 



a. First upper premolar nearly as 



large as one of the inner lower 



incisors. 



38. Ears as long as the muzzle ; [p. 63. 

 forearm 5"'7 Pt. keraudrenii, 



(3. First upper premolar deciduous. 



39. Ears much longer than the 

 muzzle, acutely pointed ; fur 

 covering the sides of the face 



long and directed backwards ; f p. 66. 



forearm 5" -2 Pt. viacklotii, 



40. Ears slightly longer than the 

 muzzle ; fur of the sides of the 



face not peculiar ; forearm 6"-3 . Ft. caniceps, p. 68. 

 A'. Interfemoral membrane nearly one 

 inch wide in the centre. 

 41. Ears slightly longer than the 

 muzzle, obtusely pointed, the third 

 upper premolar and first molar 

 with well-developed antero-inter- 

 nal basal projections; forearm 7"-2. Pt.Jubatus, p. 68. 



