1917.] 



Allen, Lang and Chapin, Bats from the Belgian Congo. 



435 



Upperparts, in general effect, blackish grizzled with white, the pelage being brown- 

 ish black at base and apically with a narrow subapical zone of white; head grayish 

 brown, much lighter than the back, with dusky eyerings; underparts uniform dusky 

 brown, the tips of the hairs lighter, giving a decidedly grayish general effect, consid- 

 erably lighter than the back. Proximal half of forearm heavily furred. Ears and 

 membranes naked, blackish brown, the wing and leg bones and the feet much lighter 

 than the membranes, especially on the ventral aspect. 



Ears narrow and attenuate, tapering apically to a sharp point. Interfemoral 

 membrane deeply hollowed'; tail very short, about one-third of the length of head 

 and body, the terminal vertebra free. Thumb short. A large frontal sac in both 

 sexes, lined with silky straight hairs, wholly white, or white at base with light brown- 



Fig. 4. Hipposideros langi. Head of adult male (No. 49391), showing nose-leaves and frontal 

 sac. \. 



ish tips. When the sac is everted these white hairs form a conspicuous white tuft. 

 A glandular pouch is present in males just in front of the anus, lined with long, rusty 

 brown bristly hairs, which when the pouch is everted form a conspicuous tuft, the 

 hairs being more or less obvious even when the pouch is not everted. The females 

 appear to lack the anal pouch, but have in its place a pair of elongated nipple-like 

 papillae, usually clubshaped or thickened apically. These are conspicuous in alco- 

 holic specimens and usually readily observed in dry skins. They are situated about 

 5 mm. apart and have a length of about 8 mm. 



Nose-leaf very broad (about 20 mm. wide); posterior leaflet narrow (about 10 

 mm. wide), with a narrow central point 2 mm. high and 0.5 mm. wide. The nostrils 

 are enclosed posteriorly and laterally by a fleshy conch-shaped border. There is a 

 prominent fleshy knob at the posterior border of the nose-leaf, and two supplemental 

 leaflets, the inner strongly and the outer weakly developed. 



