1875.] MR. G. E. DOBSON ON THE GENUS CHALINOLOBUS. 385 
0"-15; forearm 18; thumb 0'-3; second finger 3'°3; fourth 
finger 2'-15; tibia 0-75 ; foot and claws 0'°35*. 
Hab. New South Wales ; Tasmania. 
CHALINOLOBUS NIGROGRISEUS. 
Scotophilus nigrogriseus, Gould, Mamm. of Australia, vol. iii. pl. 44. 
Head short, slightly elevated above the face-line; muzzle broad, 
shortly conical; nostrils prominent on the upper surface of the 
muzzle, projecting slightly by their inner margins in front, opening 
sublaterally, emarginate between, and closer together than in other 
species of this genus. Ears very rhomboidal in outline ; the outer 
and upper angle, forming the tip, rounded off ; the lower half of the 
euter margin slightly reflected backwards at the edge; emarginate 
opposite the base of the tragus, and terminating in a distinct rounded 
lobe close to the angle of the mouth, not hanging vertically down- 
wards at its termination as in C. gouldi; tragus expanded outwards 
above, reaching its greatest width above the middle of the inner 
margin, the breadth of the summit equal to the length of the inner 
margin, which is straight or slightly concave. On the whole, the 
form of the tragus is very similar to that of C. gouldi. 
Wings to the base of the toes; postcalcaneal lobe rounded, well 
developed, about the breadth of the foot from the tibia; last rudi- 
mentary joint of tail free. 
Above deep black, the tips with a slight brownish or greyish 
tinge ; beneath similar, the tips ashy and generally of a lighter shade 
on the pubes and along the sides of the body. 
Distribution of the fur and dentition quite similar to those in C. 
goutdii. 
Length (of an adult ¢ preserved in alcohol): head and body 
1"°75; tail 1-35; head 0"°55; ear 0:5, tragus 0'°2x0"'12; 
forearm 1°35; thumb 0:28; second finger 2"°6; fourth finger 
1'"7; tibia 0°55; foot and claws 0-28. 
Hab. Australia, northern and eastern coasts, Port Essington, 
Moreton Bay. 
CHALINOLOBUS ARGENTATUS, Ni. Sp, 
The crown of the head is abruptly elevated above the face-line as 
in Miniopterus, but to a much less extent ; muzzle short, very obtuse 
in front, broad and flattened above ; nasal apertures wide apart in 
front, separated by a slightly concave space, opening sublaterally, 
bounded laterally by the front margins of the labial glandular pro- 
minences which are separated from the nostrils above by a sulcus on 
each side, as in the other species of this genus. Beneath, on each 
side of the chin, below the under lip, a smooth broad rounded ele- 
vation exists separated from its fellow of the opposite side by the 
* The original description of this species scarcely occupies two lines, and applies 
equally well to at least twenty different species; and the fact that all subse- 
quent descriptions have been based on this and on the imagination of the de- 
seriber, and were not derived from an examination of the types, will explain my 
reasous for giving so lengthened a description. 
Proc. Zoor. Soc.—1875, No. XXV. 25 
