Rhinolophus. mammalia. CHEIROPTERA. B 
1. CHEIROPTERA. BATS. 
The animals of this group feed on insects, chiefly moths, 
which they hunt in the evening. They sleep during the day. 
Migrate or become torpid during the winter. Bring forth two 
at a birth. In the British species, there is only one bony joint 
in the fore finger, without nails, and two in the rest. The tail 
is included in the interfemoral membrane ; and the summits of 
the grinders have conical points. All the species of the follow- 
ing groups belong to the genus Vespertilio of Linnaeus. 
A. Nostrils with appendages. Ears simple, 
CrEN. I. RHINOLOPHUS. Horse-shoe Bat. — Nostrils with 
a complicated membrane hke a horse shoe.— This mem- 
brane is divided into two processes, the posterior of which 
is erect. Ears free, acute and reflected. Two incisors 
above, in a cartilaginous intermaxillary bone, and four be- 
low, approximate, trifid. Tusks 8, grinders 20. Two 
pectoral and two inguinal teats were observed by Mon- 
tagu. 
1. R. Ferrum-equinum. Larger Horse-shoe Bat.— Front 
grinder in the upper jaw small, simple, and truncated. 
Horse-shoe Bat, Penn. Brit. Zool. i. p. 147- tab. xiv. — Mont. Linn. Trans, 
ix. p. 165. tab. xviii. f. 5, 6 — ^Frequenting saltpetre houses at Hart- 
ford in Kent, Latham ; caverns, Torquay, Devonshire, Montagu. 
The colour is pale rufous-brown ; weight about 4 drams ; length to the root 
of the tail inches ; tail 3| inches ; expansion of the wings 14| inches. The 
tusks are simple. 
2. R. Hipposideros. Lesser Plorse-shoe Bat — Front grinder 
in the upper jaw acute, and notched at the base before and be- 
hind. 
Vesp. minutus, Mont. Linn. Trans, ix. p. 163. tab. xviii. f. 7, 8 — Rh. 
hip. Leach., Zool. Misc. iii. p. 2. tab. 121 In caverns with the pre- 
ceding, Wiltshire and Devonshire, Montagu. 
Colour, the same as the preceding ; weight from 63 to 80 grains ; length to 
the root of the tail 2 inches ; tail | inch ; extent of the wings 9| inches. 
Tusks in the upper jaw notched in front, in the lower simple. Incisors in 
