316 Mr. O. Thomas on 



membranes. Feet large in proportion. Calcar long, witliout 

 post-calcareal lobule. Wings to the base of the fifth toe. 



Skull rounder and more swollen than in P. rueppdlij the 

 frontal region broader and more convex, and the brain-case 

 more inflated. Supra-orbital edges more rounded, less ridged. 

 Bony jmlate slightly shorter posteriorly. 



Inner upper incisors not so long as in P. rueppelli, bi- 

 cuspid, the secondary cusp well developed. Outer incisor 

 much larger than in rueppelli, its longer cusp falling not far 

 short of the outer cusp of the inner incisor, its base with two 

 small secondary cusps, postero-internal and postero-external. 

 Sniall upper premolar well developed, nearly half the height 

 of the large premolar, quite visible from without, in the 

 centre of the fairly large space between the canine and large 

 premolar. 



Dimensions of the type (the italicised measurements taken 

 in the flesh) : — 

 . Forearm 36 mm. 



Head and body 4p ; tail 41 ; ear 12 ; third finger, meta- 

 carpal 34:*5, first phalanx 12'6, second phalanx 11 ; tibia 14 ; 

 hind foot (c, u.) 10. 



Skull: greatest length 13"5; basi-sinual length 9"8 j 

 front of canine to back of m^ 4"8. 



JJah. Uganda. Tj'pe from 60 miles W. of Entebbe. 

 Alt. 3700'. 



Ti/pe. Adult male. B.M. no. 6. 7. 1. 5. Original num- 

 ber 1. Collected during the Euwenzori Expedition by R. E. 

 Dent. Several specimens. 



In both P. rueppelli and P. pulcher * the outer incisor is 

 minute, and in the type of the latter species, which in other 

 respects seems nearest to P.fuscipes, there is no indication of 

 the characteristic contrasted coloration of the limbs and 

 membranes. 



Pipistrellus musciculus, sp. n. 



A very minute species with unicolor fur. 



Size excessively small, smaller than in any known bat. 

 General colour perfectly uniform umber-biown, slightly 

 darker than Ridgway's " burnt umber," the hairs ot the 

 same colour from base to tip ; under surface similar, though 

 appearing slightly lighter owing to the glossy tips to the 



* The typical skull of F. pulcher has unfortunately been mislaid, but 

 Dobson's statements (especially that in the synopsis of species) as to the 

 size of its incisors are explicit. 



