﻿MAMMALS FROM THE NILE DELTA REGION, EGYPT — SETZER 355 



subspecies can, however, be readily distinguislied by their coloration 

 and the longer darker ear and by the noticeably larger skull of 

 G. g. gerbillus. 



GERBILLUS HENLEYI MARIAE (Bonhote) 



DipodiUus mariae Bonhote, Proc. Zool. Soc. London, 1909, p. 792, April 8, 1910 

 (Mokkattam Hills, near Cairo, Egypt). 



Specimen examined. — One. Giza Province : 5 miles east of 

 Heliopolis. 



Description. — Upper parts Pinkish Cinnamon, but little pure color 

 on sides, all pigmented areas strongly suffused with black; hairs of 

 upper parts plumbeous at base; entire underparts, muzzle, fore and 

 hind legs, upper surface of feet, supraorbital and postauricular 

 spots, and narrow ring at base of tail, white ; eye and pinnae of ears 

 bordered by narrow black line ; ears light brownish, finely covered with 

 whitish hairs; tail long, bicolored (same as back on dorsal surface 

 proximally, grading to blackish distally), penicillate; soles of hands 

 and feet naked. 



Measurements. — A male from 5 miles east of Heliopolis measured: 

 Total length 172 ; length of tail 98 ; length of hind foot 21 ; length of 

 ear from notch 9 ; occipitonasal length 21.3 ; length of palate 9.0 ; length 

 of palatal foramina 3.8; length of auditory bulla 7.5; crown length 

 of upper molar series 2.7; least interorbital width 3.8; weight 10. 



GERBILLUS NANUS GARAMANTIS Lataste 



Gerbillus garamantis Lataste, Le Naturaliste, 1881, p. 507 (Sidi-Roueld, Ouargla, 

 Algeria. Female, B. M. No. 19.7.7.1586, and its skull, B. M. No. 19.7.7.1597). 



Specimens examined. — Three. Giza Province : 1 mile northeast of 

 Kom Aushim. 



Description. — Upper parts Clay Color, purest on sides and cheeks ; 

 with a strong admixture of black on the back ; hairs plumbeous at base 

 in all pigmented hairs; underparts, forelimbs, dorsal surfaces of fore 

 and hind feet, ventral half of tail, supraorbital and postauricular spots 

 and muzzle, white. Ears brownish, nearly naked, bordered by thin 

 blaclrish line ; dorsal surface of nose, blackish ; eye bordered by narrow 

 black line ; dorsal surface of tail as back color but with more admixture 

 of black, which increases toward the black penicillate tip. Soles of 

 hands and feet naked. 



Measurements. — Averages and extremes of three males from 1 mile 

 northeast of Kom Aushim, were: Total length 195.3 (191-202) ; length 

 of tail 110 (106-115) ; length of hind foot 23 (22-24) ; length of ear 

 from notch 12.3 (12-13) ; occipitonasal length 25.0 (24.2-25.8) ; length 

 of palate 11.2 (10.6-11.7) ; length of palatal foramina 4.5 (4.3-4.7) ; 

 length of auditory bulla 7.9 (7.7-8.2) ; crown length of upper molar 



