COLEURA AFRA. 
135 
anterior part of the cingulum of the lower canine has likewise a sharp process. The 
lower incisors are trifid. The first lower premolar is about half as high as the second. 
Measurements. 
Suakin. Mozambique. 
d. 
d. 
$. 
d (co-type). 
mm. 
mm. 
mm. 
mm. 
mm. 
Snout to vent. 
53 
50 
56 
51 
56 
Vent to tip of tail. 
17 
21 
18 
18 
15 
Length of head. 
Height of ear from point of attachment behind 
20 
21 
21 
21 
21-5 
mouth. 
17 
16 
18 
17 
16 
Height of tragus from lower border of meatus 
5 
5 
5 
5 
5-5 
Breadth of tragus at middle. 
2 
2 
2 
2 
2 
Length of forearm. 
47 
49 
49 
48 
50 . 
„ lower leg. 
19 
18 
19 
18 
17 
„ foot . 
9 
10 
10 
10 
11-5 
the time of my visit this bat occurred 
in immense 
numbers in 
some disused 
chambers and cellars in Government House, Suakin. Leaving the dark recesses in 
which they secreted themselves during the day, they issued forth about sundown to the 
open air through a small open court, in which it was possible to knock them down as 
they whirled about in rapid succession. Yerbury found this bat associated with 
Tri(]eno])S persicus and Hipposidertis tridens at Aden in a lofty cave communicating 
with the sea, and also living by itself in another cave above sea-level. In January 
the females were in a gravid condition, each containing one foetus. 
This species was first described from Mozambique by Peters, but since then it has 
been recorded from the Zambesi, the island of Pemba, from Aden, and Somaliland. 
The Suakin specimens have been compared in the foregoing Table with one of the 
types in the British Museum, presented by the late Dr. Peters. 
G. afra is distinguished from C. seychellensis, Dobson, by its larger and broader ears 
and tragus, and much shorter forearm. 
The presence or absence of a groove in the upper lip is not a reliable guide to the 
recognition of the species of the genus Coleuvcii for, as already stated, it is more or less 
present in C. afra ; indeed a trace of it is only rarely absent. 
