664 CHIROPTERA 
and by the oval elongated ear and narrow attenuated tragus. In 
the British Isles this genus is represented by four species, viz. 
Bechstein’s Bat (V. bechsteini) ; the Reddish-Gray Bat (V. nattereri), 
of very local occurrence ; Daubenton’s Bat (V. daubentoni) ; and the 
Whiskered Bat (V. mystacinus). 
Cerivoula—This genus, which has the same dental formula 
as Vespertilio, is distinguished by the parallel upper incisors, 
and the comparatively large size of the second 
upper premolar. Some ten species have been 
described from the Ethiopian and Oriental 
regions, of which C. picta, from India and the 
Indo-Malayan subregion, is the best-known, 
being well characterised by its brilliantly 
coloured orange fur and conspicuously marked 
membranes, which are variegated with orange 
and black. This genus includes the most deli- 
cately formed and most truly insectivorous, 
tropical, forest-haunting Bats, which appear to 
SiS _~—s stand as regards the species of Vespertilio in a 
einai position similar to that occupied by Chalinolobus 
Fic. 309.—Side and : 
front views of the heaq With respect to Vesperugo. 
of Cerivoula hardwickei. The Miniopterine division includes only two 
eae Monogr. Asia. genera, and is characterised by the great eleva- 
“a tion of the crown of the head above the facial 
line, and by the upper incisors being separated from the canine 
and also in the middle line. 
Natalus.-—This genus, while having the divisional characters 
mentioned above, agrees in the dental formula and its general 
external form with Cerivoula, from 
which it is distinguished by the 
short triangular tragus. It in- 
cludes three species, restricted to 
South and Central America and 
the West Indies; the head of N. 
mucropus being shown in Fig. 310, 
Miniopterus.’—Dentition : i 3, 
¢4,p 2, m 3; total 36. In 
addition to the difference in the 
number of the teeth, this genus is 
distinguished by the shortness of 
the first phalanx of the middle finger and the great length of the 
tail, which is wholly contained within the interfemoral membrane ; 
it includes four species, restricted to the eastern hemisphere. Of 
1 Gray, Ann. Mag. Nat. Hist, vol. x. p. 258 (1842), Kerivoula. 
° Gray, Mag. Zool. Bot. vol. ii. p. 496 (1838). 
3 Bonaparte, Fauna Italica, fase. xxi. (1837). 
Fig. 310.—Head of Natalus mieropus. x8. 
(Dobson, Proc. Zool. Soc. 1880.) 
