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On Two new Gerbils from Sinat. 559 
LX.— Two new Gerbils from Sinai. 
By OLDFIELD THOMAS. 
(Published by permission of the ‘Trustees of the British Museum.) 
I owe to the kindness of the authorities of the Egyptian 
Zoological Service at Giza the opportunity of examining a 
number of small mammals from Egypt and Sinai, and among 
these there are examples of the two following new species of 
Gerbillus :— 
Gerbillus flower?, sp. n. 
A large species, with comparatively broad skull and large 
bulle. 
Size of the type, which is old, about as in average specimens 
of G. pyramidum, not so large as the largest examples of that: 
rather variable species. General colour the usual pale 
“ verbil-colour,” the back finely speckled with the minute 
brown tips to the dorsal hairs; white under surface extending 
high up on shoulders, and including the whole of the limbs. 
Soles completely hairy, except just under the heel. Usual 
postorbital and postauricular white patches distinct. Tail 
buffy above, white on sides and below; tip missing in type. 
Skull proportionally broad, as broad as in a considerably 
longer skull of G. pyramidum. Palatal foramina well open, 
extending back to the level of the front of the roots of m’. 
Bulle larger than in any of the Egyptian or Syrian species, 
longer but less broadly swollen than in the peculiar G. val- 
linus of S.W. Africa. 
Dimensions of the type (measured on skin) :— 
Head and body 127 mm. ; tail (?) ; hind foot 35. 
Skull: greatest length 34; condylo-incisive length 30 ; 
greatest breadth 19; nasals 13°6 x 3°3; interorbital breadth 
6°7; breadth of brain-case 16; bi-meatal breadth 18-2; 
palatine foramina 6°5 ; bulla, diagonal length 11-8, breadth 
at right angles to last (exclusive of meatus) 6°8 ; upper 
tooth-row (considerably worn) 4°5. 
Hab. (of type). Wadi Hareidin, extreme northern Sinai, a 
a few miles south of El Arish, about 31° N., 34° E. 
Type. Old male. B.M. no. 19.5. 7.4. Giza Museum 
no. 8042, Collected 24th December, 1918, by Capt. S. 8S. 
Flower, and presented by the Giza. Zoological Service. One 
specimen, 
