NTCTERIS THEBAICA. 
109 
Measurements. 
Khayzam. 
Luxor. 
Karnak. 
Hadramut, 
d. 
d. 
$. 
d. 
mm. 
mm. 
mm. 
mm. 
Snout to vent. 
47 
49 
47 
Vent to tip of tail. 
.... 52 
51 
52-5 
53 
Length of head. 
.... 21 
21 
21 
21 
Height of ear. 
.... 30 
28 
30 
35 
Long diameter of eye. 
] 
. . . 
Inner canthus of eye to tip of snout 
.... 9 
10 
8-3 
10 
Height of tragus. 
7 
8-3 
9 
Greatest breadth of tragus .... 
4 
4 
4 
Length of forearm. 
43 
44 
45 
„ 1st digit of manns . . . 
.... 11-3 
11 
12 
11 
„ 2nd metaearpal .... 
.... 35-5 
36-5 
37 
41 
„ 3rd „ .... 
.... 33 
33 
33-5 
35 
>) dth ,, .... 
.... 35-3 
35 
35 
36-5 
,, 5th ,, .... 
.... 35-5 
35-5 
36 
36 
„ tibia. 
.... 22-5 
23 
23 
23 
„ foot . 
.... 11 
11 
10-5 
11 
Stretch of wing. 
.... 280 
279 
280 
273 
The specimens from Hadramut, the measurements of one of which I have included 
in the above Table, have somewhat larger ears than the typical JSf, thelaica, 
but beyond this and their paler colour they are inseparable from Egyptian 
individuals. 
E. Geoffroy St.-Hilaire in describing Nycteris thehaica gives a somewhat elaborate 
account of a power which he said this bat possessed of inflating itself hypodermically, 
and states that it had a sort of pouch on each side of the mouth communicating with 
a great membranous sac formed by the skin of the body and capable of being filled 
with air. I have carefully searched for this cheek-pouch and for openings leading to 
a sac, but without success. I had at my disposal rich materials for my search in quest 
of these structures, as I had over fifty examples in my possession from the Hadramut. 
No trace of an opening or of a sac could be detected; but to verify my observations I 
submitted two bats to Dr. W. G. Eidewood, of the British Museum, for his examination, 
accompanying the bats with the volume in which E. Geoffroy St.-Hilaire recorded 
his remarks. After Dr. Ride wood had examined them, he wrote to me as follows:— 
“ I am sorry I must confess to complete inability to discover the openings in the cheek- 
pouches described by Geoffroy.” 
In the British Museum there are three skins of bats from Kordofan, and one stuffed 
specimen from Sennaar, referred by Dobson to a species which he called N. cethiojyica. 
