1861.] MR. R. F. TOMES ON BATS FROM S.W. AFRICA. 35 



molars, and has the usual carnassial form. The true molars require 

 no special mention. 



The incisors in the lower jaw are small, symmetrically arranged, 

 and trilobed ; the canines have an anterior process above the level of 

 the incisors, and a posterior one quite at the base ; the first premolar 

 is small and conical, about one-third the length of the canines ; the 

 second similar in shape, but almost twice the length of the first. 

 The true molars may be passed by. 



This species is one of a small group which is confined almost 

 wholly to Africa, — the only species which is found elsewhere, as 

 far as I know at present, being the S. Jmhlii* of Europe ; and it is 

 likely that this species is more abundant in the former than in the 

 latter country. I shall be enabled, by reference to this known species 

 as here described, to give a more satisfactory account of some others. 

 I propose giving the dimensions together. 



SCOTOPHILUS RUSTICUS, n. S. 



The present diminutive species resembles in the shape of its head, 

 ears, and incisor teeth the S. kuhlii and the S. minutus. Top of the 

 head nearly on a level with the face, nostrils somewhat crescent- 

 shaped, and the snout grooved as in S. minutus ; ears small and tri- 

 angular, as in S. minutus ; tragus of uniform breadth, rounded at 

 the end and curving inwards, the notch in its outer margin, at the 

 base, small, and the lobe below it small and pointed. As in S. mi* 

 nidus the outer margin of the ear does not advance nearer the angle 

 of the mouth than the base of the tragus. 



Thumb and feet rather large in relation to the size of the animal, 

 being equal in size to those of S. minutus. They are proportioned 

 just as in that species. 



The fur is confined to the body, both above and beneath. It is 

 everywhere thick, soft, of moderate length, and without gloss. On 

 the upper surface it is dark brown at the roots, with the terminal 

 half light cinnamon-brown ; on the under parts of the body, dusky 

 at the roots, with the terminal half brownish white, excepting on the 

 pubes, where it is almost of a uniform dirty white. The nose, ears, 

 and wing-membranes are dark brown, the latter very narrowly edged 

 with white, which is most distinct on each side of the feet. 



The cranium resembles that of S. kuhlii, both in general confor- 

 mation and in the number and arrangement of its teeth, being pos- 

 sessed of one more premolar than S. minutus. 



Dentition : M. ?=? ; Can. J-=i ; Premol. |e| ; Mol. |E|=i1. 



The upper incisors are unequal in size, just as in S. minutus ; the 

 canines are relatively stouter than in that species, which is due in 

 some measure to a slight fullness, or rounded prominence, in the 

 middle of the thin hinder edge of the tooth ; the first premolar is 

 very small, being a mere tubercle, and is placed between the conti- 

 guous canine and premolar, and is visible only from within; the 



* Prof. Blasius states that this species aud S. marginatus are identical ; hence 

 make use of the above name as having priority. 



