260 
THE MAMMALS OF EGYPT. 
and presented by Dr. J. Anderson; it was obtained, as were all the other specimens, at 
Mandara, east of Alexandria. 
Dr. Anderson has the following note on this species :—“ Gerbilhos -. Small, red ; 
the ‘ Zug ’ of the Bedouins at Ramleh. No. 156. This example, a mature male, was 
found in burrows in a barley-field in which Psammomys occurred. The gland on the 
belly of this species is relatively more developed than in the other species of Gerbillus, 
measuring 36 mm. in length, and 7 mm. broad.” 
The specimen mentioned by Lataste in a note on p. 25 of the ‘ Catalogue Mammiferes 
de la Tunisie ’ possibly belonged to this species ; but if so it must have been very young. 
Under no circumstances can the gerbil from Alexandria be considered the typical 
form of Olivier’s Dipiis gerhillus, for the traveller himself distinctly gives the name 
to the animal which he found near Memphis. M. Lataste does not appear to have 
read Olivier’s book and attributes the generally admitted type locality to an invention 
of Desmarest, whereas that naturalist was correctly quoting Olivier. 
Dr. Anderson when in Paris took the following notes on the skull of the specimen 
mentioned by Lataste:— 
“ The skull of the small Gerhillus from Alexandria mentioned by Lataste, Cat. 
Mamni. Tunisie, pp. 24-25, has the following measurements :— 
mm. 
Foramen magnum to tip of premaxillaries. 20 
„ „ end of osseous palate. 7‘5 
Behind incisors to end of osseous palate. 10'2 
Length of osseous snout to lachrymal notch .. 85 
Breadth above zygoma. 12‘2 
Length of upper dental row. 3'9 
Anterior palatine foramina. 4'7 
“ This is a short skull, broad behind, and with rather a short obliquely oval 
zygomatic arch. The anterior palatine foramina are long. The lamime of the teeth 
are well separated. The osseous bullse are moderately sized. The incisors are 
deeply grooved. This is the specimen which I.ataste considered to be the G. gerhillus, 
Olivier.”— W. E. de W. 
