ALLEN: BATS FROM BRITISH EAST AFRICA. 331 



variation in the development towards the condition in which there 

 will be normally but the single large premolar present. 



MOLOSSIDAE. 



Chaerephon hindei (Thomas). 



Nyctinomus hindei Thomas, Ann. Mag. Nat. Hist., 1904, ser. 7, 13, 

 p. 210. 



This beautiful white-winged bat was originally described from Fort 

 Hall, an outpost to the south of Mt. Kenia. While passing through 

 this place we were shown a colony of bats, doubtless of this species, 

 that inhabited the interspace between roof and ceiling of a house. 

 Ingress was had through a small crack at the corner of the roof. No 

 specimens were obtained here, but at Mombasa, on the coast, a single 

 one was captured by the Swahili boys on the hotel veranda at night. 

 Its forearm measurement is slightly smaller than that given for the 

 type, namely 37 as against 40 mm. Moreover, the wing membranes 

 are whitish to the tips and there is no noticeable white flecking on the 

 back. 



