Zoological Society. 51 
the interfemoral membrane ample, naked above and below, excepting 
quite at the base; the tail is enclosed to the point in this membrane ; 
the thumb is moderate. 
VespertiLio Escuscuourzi. Vesp. vellere longo fusco-nigricante, 
corpore subtus pilis apicibus cinerascentibus ; artubus fuscis ; au- 
ribus brevibus ; tragis angustis, ad apicem rotundatis, antic? emar- 
ginatis. 
une. lin 
Longitudo ab apice rostri ad caude basin,... 2 O 
CHRO Soa. srtin, Bye rs. ae mataca, WAG, ele, Ee 
— iG ga AG el ola Laid al ieee Bie paid eh 
WUNIS ieiad:. i al 2, DE ae ete 0 34 
Alarumyamplitudo...... ....ayist seve FOO 12 0 
Incisor teeth =, the outermost incisor of the upper jaw is smaller 
than the inner one. ‘The forehead is much arched, and separated, 
as it were, from the muzzle by a deep transverse depression; on each 
side of the head is a naked groove, which runs over the eye. The 
muzzle is short and rounded, naked at the tip only, the other parts 
moderately well clothed with hairs: the nostrils open almost in front, 
and are more than usually approximated; their upper boundary 
is prominent, and there is a deep groove between them. On the 
inner side of the upper lip are two small fleshy folds, and some com- 
pressed tubercles situated toward the angle of the mouth; the lower 
lip has a narrow triangular naked area at the tip. ‘The ears are 
short, broad and rounded, but have the upper margin subtruncated; 
on the inner side are two transverse ridges; the lower part of the 
ear is extended forwards to the angle of the mouth. The tragus is 
narrow, curved, rounded at the point, indistinctly emarginated on 
the outer side, and about 22 lines in length. ‘The wings are rather 
narrow, and extend along the hind-leg to the distal end of the tibia 
only. The hind-legs are moderate ; the metatarsus narrow and long, 
the distance from the heel to the base of the toes exceeding the toes 
in length; the toes are rather short and nearly equal. ‘The inter- 
femoral membrane is ample, naked, excepting at the base; the heel- 
cartilage is short; the tail enclosed in the interfemoral membrane to 
the point; the thumb is very small. 
Of the species described in this paper, Vespertilio Hschscholtzii 
approaches most nearly to the V. tristis; it is much smaller, how- 
ever, than that animal, has the thumb smaller in proportion, and its 
colouring is less dark. Among the species of M. Temminck’s Mo- 
nograph our V. tristis most nearly resembles, in the form of its head 
and ears, the V. dlepotis (pl. 58. fig. 2.); the V. Eschscholtzii (of 
which Mr. Cuming brought home several specimens) is at least one- 
third smaller. 
VESPERTILIO MACROTARSUS. Vesp. supra cinereus, subtis albicans ; 
auribus longis, anguslis, ad apicem acutis, postice fere rectis ; 
trago elongato, atienuato, acuto; alis amplis fuscis, ad basin pal- 
lidioribus, 
E2 
