174 



DIPUS. JERBOA. 



Generic Character. 



Denies Primores utrinque duo. 



Pedes anteriores brevissimi ; 



posteriores longissimi. 

 Clavicula perfectae. 



Front -teeth two above and 



below. 

 Fore-legs very short; hind-legs 



very long. 

 Clavicles in the skeleton. 



COMMON JERBOA. 



Dipus Sagitta. D. cauda longissima, apice subpennata nigro- 

 alba f pedibus posticis longissimis tridactylis. Pall. Glir. p. 87. 

 and p. 306. Mus. 



Pale-brown Jerboa, white beneath, with extremely long tridac- 

 tyle hind feet, and very long tail with fubpennated black- 

 and-white tip. 



Egyptian Jerboa. Pennant Quadjr. 2. p. 164. Edw.pl. a 19. 



HIS is the species which seems to have been 

 known to the ancients under the name of /*u? <Trs?, 

 or two-footed mouse, and which is represented, 

 though with no great degree of exactness, on 

 some coins of Cyrene, where it was anciently 

 found in great abundance, and where it still con- 

 tinues. It is by some supposed to be the Saphan 

 of the sacred writings. It is about the size of a 

 rat, and is of a very pale tawny-brown above, 

 and white beneath ; and across the upper part 



