7. ELEUTHEHUKA. 117 



gate. Grinders f ; false grinders §, the front upper small, conical, 

 lower larger. Wings from the sides of the back. Back to the origin 

 of the wings, the shoulders, back of the forearms and the thighs, and 

 the back of the legs hairy. Wings to the base of the toes. Thumb, 

 lower joint moderate, enclosed in the membrane ; upper joint much 

 larger, slender, free. Index finger clawed. Interfemoral mem- 

 brane with a more or less distinct band on each side from base of 

 tail to heel. The great blood-vessel from the armpit and groin 

 simple until it nearly reaches the margin of the wing. 



Eleutherura, Gray, Voy. Sulph. p. 29, 1854. Gynonycteris (part), 

 Peters, Mossamb. ; Wagner. Pachysoma, part., Tomes. 



The fur at the back of the neck and withers converging and form- 

 ing an indistinct narrow crest. The toes strong, compressed. Heel- 

 bone short, strong. 



1 . Eleutherura aegyptiaca. B. M. 



Fur dull grey brown ; back rather narrow, slightly arched in on 

 the sides ; belly and hair on underside of wings ashy ; forearm-bone 

 3| inches. 



Pteropus aegyptiacus, Gcof. Ann. Mus. xv. p. 9G. Pachysoma rcgyp- 

 tiacum. Tomes, P. Z. 8. 18G0, p. 50. Pteropus GeoflVoyu, Temm. 

 Mom,,,, i. p. 197, t. 15. f. 14, 15 (skull), ii.p. 85, t. 30. f. 10. Xan- 

 tharpyia segyptiaca, Gray, List Mamm. B. 31. 



Jfah. North Africa': Egypt, Burton, Christie; Abyssinia, Harris. 

 " West Africa, Senegal," Temm. 



Length of skull 1^ inch. The fourth or last upper grinder 

 squarct moderate-sized ; last lower smaller, oblong ; the lower front 

 false grinder thick, strong ; upper cylindrical. Penis-gland soft ; 

 scrotum large, bald, rugose. 



2. Eleutherura unicolor. B. M. 



Fur soft, uniform grey brown, rather paler below ; hair one- 

 coloured ; ears large; wings pale, with white hairs near margin; 

 forearm 3 inches 8 lines ; tail very short; false grinders in each jaw 

 well developed, lower largest. 



llab. West Africa : Gaboon, Verreaux. 



See Pteropus moUipilosus, Allen, Proc. Acad. N. Sci. Philad. 1861, 

 p. 159. Head small ; ears large ; tail very small, free ; fur 

 olive-brown, brighter on the back of the neck. Hab. 

 Western Africa ((iaboon), Du Chaillu. « The intermaxillary 

 bone of the skull is not thrown forwards and downwards as 

 in other Pterojn, but is on the same level as tho roof of the 

 mouth, the first upper premolar larger than the incisors, tho 

 same tooth of lower of a good size and less tubercular than 

 in other species." — Allen. Perhaps male of preceding. 



