Bats of the Genus Kerivoula. 461 



showing through ; below dark slaty, the lighter tips scarcely 

 affecting the general dark tone. 



Upper inner incisors slender, with a distinct posterior 

 secondary cusp, to the tip of which the unicuspid outer incisor 

 just reaches. Other teeth apparently as in K. Hardwickei. 



Dimensions of the type (an adult male in alcohol) : — 



Forearm 32 millim. (=1*25 inch). 



Head and body 39 ; tail 39 ; head 16 ; ear from notch 13*5 ; 

 tip to tip of ears across head 28'5; length of index 31'5, 

 third finger (exclusive of cartilaginous tip) 61, fifth finger 47; 

 lower leg 16*2 ; hind foot without claws 8. 



Hah. Isabella, N.E. Luzon. Coll. J. Whitehead, May 

 1894. 



Type: B.M. 94.10.9.2. Presented by the subscribers to 

 the Whitehead fund. 



This species is undoubtedly very close to K. Hardwickei, 

 but may be distinguished by its hairy interfemoral and by 

 the different structure of its upper incisors. It may be noted 

 that a Mindanao specimen of the older known species shows 

 no approximation to K. Whiteheadi. 



Kerivoula pusilla, sp. n. 



Size decidedly smaller than in K Hardwickei, and, indeed, 

 than in any other known species except K. africana. Ears 

 short, laid forward they do not reach to the tip of the muzzle, 

 their anterior edge even more convex forward than usual, their 

 outer upper notch very close to the tip, and their outer basal 

 lobe much developed. Tragus as usual in this group. 

 Hairiness of limbs and membranes almost exactly as in 

 K. Whiteheadi, although rather thinner, and the proximal 

 half of the interfemoral only hairy. 



Colour pale rufous above, the extreme bases of the hairs 

 slaty ; under surface greyish, decidedly paler than the upper. 



Skull with a remarkably slender and delicate muzzle and 

 small narrow brain-case, differing markedly in these respects 

 from K. Hardwickei, in which (for a Kerivoula) the muzzle 

 is stout and strong and the brain-case large and well-rounded. 



Dentition very light and delicate, the teeth, as a rule, both 

 shorter and thinner than those of the allied form. Upper 

 inner incisor with one distinct and a second indistinct secon- 

 dary posterior cusp, to the former of which the unicuspid 

 outer incisor reaches. Two anterior premolars subequal in 

 all dimensions, decidedly smaller than the last one, their 

 transverse less than their longitudinal diameters, the converse 

 being the case in K. Hardwickei and other species. Lower 



