150 Zoological Society. 
experience affirm to be the case. The species now under considera- 
tion is even later than the Noctule, seldom being seen until the latter 
has been abroad for an hour; so late that, excepting on very clear 
evenings, there is little chance of either observing or obtaining spe- 
cimens. 
It is probable that they may be seen during the greater part of the 
summer months, for I remember to have seen and particularly no- 
ticed them for a long time before I thought of shooting one, and also 
for a considerable length of time afterwards. They may at any time 
be known by a person at all conversant with the method of flight of 
the different species of Bats, by their unsubstantial, butterfly-like 
appearance. 
Both the specimens which came into my possession in the way 
alluded to were females, and on dissection contained a single foetus, 
about half an inch in length; yet even at this early age the mem- 
branes were considerably developed, and all the parts bore nearly 
the same relative proportion to each other as in the adult. 
The auricle of the ear appeared to be nearly, if not quite fully 
formed, and folded forward over the eyes, reaching almost to the end 
of the nose. ~ 
When skinned and dissected this Bat was quite free from all un- 
pleasant smell. 
DIMENSIONS. ee te 
hength oF the’ head and: body.) 2.0.0 00 Pin! of. [lai 
Mehta Ol NEA as). UF eo eee cheater ae sh ote Soe aoe O72 
MACHO CHG, Cer S08 e kU oct Sate hein owes lk ete ees oo 1 6% 
menpenior the warmer: |! Cs Ps eee et ae eka 0 6 
WVadth cos iditto ~ 03 hele OPS Re PS Ome aes 0 33 
PCUPEN OF THE TTALUS ya's oe oct oie te see be aes eleleter: ere MOUs 
WWSGENYOE ditto. UL 2 Cor Bietet ARs A oe ae aoe zs 0 
Extent of wings s....) 89633 pe ecttes é Oe Tee 9 24 
Heneth of the humerus! 2, bie F2 e. Poe wt LU ee 
eng th ‘of the thumb) i. 4422). OU? ay eaters, Beak: 0 2 
Length from the point of the under jaw to the angle of 
the mouth, being the gape-liné...5.............. 0 83 
DENTITION. 
Sa Arathi Gor Gety 18 
aye poe Bes ms total erik 
Since the specimen obtained by Brongniart in the neighbourhood 
of Dover, none are recorded as having occurred till the present time, 
with the exception of a single specimen mentioned by Professor Mac- 
Gillivray, from Winchester, and described by him in the ‘ Naturalists’ 
Library,’ vol. xvii. He there states that the ears have “a semi- 
eircular lobe at the base of their outer side, and a wide and deep sinus 
in their upper half,” which certainly is not the case with my speci- 
mens, the notch being neither wide nor deep, nor the lobe at the base 
at all distinctly marked. Neither is there any great resemblance to 
Mr. Bell’s figure, taken from Brongniart’s; the ears in that being 
much narrower in proportion to their length, with the sinus near the 
