310 
THE MAMMALS OF EGYPT. 
Measurements. 
Snout to vent. 
Vent to tip o£ tail, without hairs. 
Length of head. 
Height of ear from anterior border of meatus . 
Length of hind foot, without claws . . . . 
6 • 
6 . 
mm. 
mm. 
151 
147 
226 
235 
41 
41-3 
28-2 
27 
77 
76 
Measurements of skullGreatest length 39 mm.; greatest breadth of ante- 
orbital malar processes 29; breadth outside auditory meatus 25-5; length of nasals 
13-5 ; height of infraorbital foramen 11, breadth of infraorbital foramen G; basal 
length 32 ; length of incisive foramina 5-5 ; length of molar series 6-5. 
The neighbourhood of Alexandria is the only locality within our bounds from which 
this species has been recorded. The same or a nearly allied form occurs also in Tunis 
and Algiers. At Eamleh great numbers are to be seen in the evening and on 
moonlight nights. 
[In the neighbourhood of Suez there is a third species of jerboa, probably J. macro- 
tarsus, Wagner (Abh. Ak. Wiss. Miinchen, iii. 1843, p. 214, pi. iv. fig. 2). 
Dr. Anderson has the following note on specimens taken to the “ N.E. of the Suez 
Canal ”:—“ Ears larger and broader than in specimens of J. jaculus from the neigh¬ 
bourhood of the Pyramids. Measurements of female : snout to vent 113 mm.; vent to 
tip of tail, without hair, 185 ; length of head 35 ; height of ear 23, breadth of ear 16 ; 
hind foot without claws 64. A male was slightly larger.” 
Mr. Th. Meyer, German Consul at Suez, has kindly sent three specimens in 
alcohol—“ Appeles par les Bedouins ‘Gerbouh.’” The material at my disposal is, 
however, wholly insufficient to go further into the subject, as there are no specimens 
from other parts of Egypt with which to compare them, the numerous specimens 
mentioned by Dr. Anderson not having been preserved. 
A jerboa, without the conspicuous white band on the feather-like portion of the 
tail, has been recorded from Sennaar by Eeichenow, in the Zool. Anz. x. 1887, p. 369, 
under the name of Bipus microtis ,— W. E. db W.] 
