Mammals from the Upper Congo. 469 



It sliould, liowevcr, be noted that Geivais's figure of the 

 skull shows no trace of the high and abrupt sagittal crest so 

 well marked in E. whitleyi, and likely to be still more 

 developed in a larger species of the same genus. 



Myopterus albatus, sp. n. 



A large whitish and white-winged species with the upper 

 body-colour arranged in a lineated pattern. 



Size large, the forearm about half as long again as in 

 M. whitleyi, and rather larger than that of M. dauhentoni 

 would be if in the same relative proportion to the skull (that 

 is to say, about twice the length) as in AT. wJdtleyi. Fur 

 soft and fine, hairs of shoulders about 4^ mm. in length, of 

 lower back 3^. Fur not extending at all on the membranes, 

 and stopping on the lower back a little way short of the tail, 

 just as in M. xoliitleyi. General ground-colour above drabby 

 brown ("dusky drab"), the hairs white at their bases, brown 

 terminally ; but on the median area of the nape, from occiput 

 to withers, and along two broad lines running down the back 

 on each side from the withers, the white extends nearly to 

 the tips of the hairs, so as to show through above, and to 

 form broad whitish lines, the brown along the side of the 

 body and that in the middle line from the withers backwards, 

 therefore, appearing as three broad brown longitudinal lines 

 separated by whitish. Fur of whole of under surface pure 

 creamy white, sharply contrasted on the sides of the neck 

 with the brown of the upper surface. Wing-membranes 

 white throughout, except that by the side of the body whicli 

 is spotted with brown granules, just as in M. lohitleyi -, inter- 

 femoral membrane brown. Upper surface of forearms, 

 digits, legs, and feet also brown. 



Ears apparently similar in structure to those of M. whitleyi^ 

 separated in the middle line, their inner keels low and little 

 developed. Tragus short and broad. Nasal septum without 

 a mesial rid;re, clothed with fine whitish hairs. Edo-es of 

 lips with a close mixture of spoon-shaped and normal bristle- 

 hairs. Lips practically without wrinkles. Wings to the 

 distal end of the tibiai. 



Dimensions (measured on the skin) : — 



Forearm 55 mm. 



Head and body (probably stretched) 84 ; tail 40 ; ear 

 (dry) 19 ; third finger, metacarpal 54*5, first phalanx 19*5, 

 second phalanx 19*5 ; fifth finger, metacarpal 35, first 

 phalanx 15; liind foot (c. u.) 18. 



Hah. R. Welle. (Collected by M. Hutereau. 



