African Bats and Shreios. 317 



liairs. Ears and membranes very dark, practically blaclf. 

 Liner margin of ears strongly convex at base, straight above ; 

 outer margin concave above, convex below. Tragus of 

 medium size, its inner margin slightly concave, its outer 

 convex, with an unusually large angular basal lobe. Wings 

 to the base of the t )es. Fost-calcareal lobule well developed. 



Skull very small, roundod, with sliort broid muzzle and 

 proportionally high brain-case, not so flattened as in l\ininus- 

 cuius and other })igniy species. Palate extended posteriorly 

 further than in any of the allied forms. 



Upper inner incisor bicuspid, outer incisor probably also 

 bicuspid, but too much worn down in tlie type for exact 

 description, its tip about equalling the posterior cusp of the 

 inner incisor. Anterior premolar small, not visible exter- 

 nally and not exceeding in htnght the cingular cusps of the 

 canine and large premolar. Lower incisors small, tricuspid, 

 not crowded or overlapping. 



Dimensions of the type (the italicised measurements taken 

 in the flesh) : — 



Forearm 2J:"4 mm. 



Head and body 40 ; tail 21).', ear p*o; third finger, meta- 

 carpus 23"5, first phalanx 10'6 ; lower leg and hind foot 

 (c. u.) 15-2. 



Skull: greatest length 10"7 ; condylo-basal length 104; 

 basi-sinual length 8 ; zygomatic breadth 7*5; intertemporal 

 breadth 3'2 ; breadth of brain-case 5'5 ; palato-sinual length 

 4*4 ; front of canine to back of m^ 3'5 ; p^~m^, length on 

 outer edge 2'5. 



Hah. Bitye, Ja River, S.E. Cameroons. Alt. 2000'. 



Ti/pe. Old male. B.M. no. 13. 2. 8. 1. Original number 

 622. Collected 3rd September, 1912, by Mr. G. L. Bates. 



" Caught in hollow palm-leaf stalk — another got away." — 

 G. L. B. 



This minute species appears to be the very smallest bat as 

 yet described, its forearm being less than an inch in length. 

 It is readily distinguishable from the other small African 

 species by its short stumpy skull, elongated palate, and uni- 

 color fur, the allied species having the fur dark basally 

 and pale terminally. In P. pusiLlulus, Peters, whicli was de- 

 scribed as having a forearm only 25 mm. in length, the skull 

 is as large as in P. nanus, to which Dobson was probably 

 right in referring it; its fur, as in the other small species, 

 was bicolor. 



