1875.] MR. G. E, DOBSON ON THE GENUS SCOTOPHILUS. 373 
inwards towards its fellow of the opposite side; first upper premolar 
minute, in the inner angle between the canine and the second pre- 
molar; first lower premolar not crushed in between the canine and 
second premolar. 
ScoTozous DORMER], Ni. Sp. 
Crown of the head scarcely raised above the face-line ; glands be- 
tween the nostrils and eyes well developed, but not causing a de- 
pression between them on the muzzle; nostrils opening sublaterally, 
the space between divided in the centre by a narrow vertical band 
passing downwards to the lip as in Vesperugo pipistrellus: ears 
shorter than the head, triangular, with rounded tips; upper third 
of outer margin of the ear faintly concave, then gradually convex, 
again slightly concave opposite the base of the tragus, and termi- 
nating in a rounded lobe below the eye, on a level with the angle of 
the mouth. Tragus with a small triangular lobe near the base of 
the outer margin, outer and inner margins parallel as far as the 
upper third of the outer margin, where the outer margin slopes 
suddenly upwards and inwards, meeting the inner margin at an 
angle. 
Thumb armed with a strongly curved claw; postcalcaneal lobe 
distinct, triangular ; tip of tail projecting ; wings from the base of 
the claws ; foot rather large, first toe nearly equal to the others in 
length. 
Fur above brown, the extreme tips ashy; beneath darker brown, 
the terminal third of the hairs white. 
A single large and acutely pointed unicuspidate incisor on each 
side above, directed forwards and inwards; this tooth almost touches 
the canine by its base; but its summit is closer to its fellow of the 
opposite side, owing to its direction inwards; from the outer side of 
its cingulum a very small spur projects. Second upper premolar 
large, equal to three fourths the canine in vertical extent, and placed 
close to it; in the small triangular space inside, between it and the 
canine, a minute premolar may be seen with the aid of a lens, not 
visible from without. Posterior upper molar equal to half the ante- 
penultimate molar. Lower incisors crowded ; middle incisors slightly 
larger than the others, all distinctly trifid: lower canines without a 
cusp from inner margin of cingulum. First lower premolar shorter 
than the seeond premolar, but in transverse diameter rather greater, 
nearer by its summit to the second premolar than to the canine. 
Length : head and body 1'5, tail 1°15, head 0'°6, ear 0°45, 
tragus 0°18, forearm 1°25, thumb 0:25, second finger 1/85, 
fourth finger 1-4, tivia 0"°4, foot and claws 0°28, 
