MAMMALS OF ANGLO-EGYPTIAN SUDAN — SETZER 569 



smaller, ventral foramen enclosed by the zygoma smaller, and frontals 

 more inflated. 



The amount of variation in certain aspects of the cranium is rather 

 great, as may be seen from the measm-ements of two males of like age 

 (so far as could be determined by the degree of wear on the last molar). 



Order PERISSODACTYLA 



Family Equidae 



Subfamily Equinae 



Equiis asiniis africanus (Fitzinger) 



Astmis africanus Fitzinger, Wissenschaftlich-populare Naturgeschicte der Saug- 

 thiere . . . vol. 3, p. 667, 1857. (Nubia.) 



Remarks: No specimens of this animal have been seen. It is now 

 considered to be extinct in its former range in Nubia. 



Equus asinus dianae (Dollnian) 



Asinus asinus dianae DoUman, Proc. Linn. Soc. London (1934-35), 147th session, 

 p. 132, May 9, 1935. (Wadi Hafta, lat. 17°43' N., long. 37°36' E.) 



Specimen Examined: One, in BM, from the type locahty. 



Remarks: From the appearance of the skin of this ass, contrasted 

 to a skin of somalicus and a color interpretation from the literature of 

 africanus, it would seem to be an intergrade. Certainly the geographic 

 area from which it comes places it between the two previously named 

 kinds. 



Owing to the fact that so few specimens are known of dianae, and 

 apparently no specimens of africanus, I feel it is best to leave the name 

 dianae as expressing a different population but which may be shown 

 later to be the same as one of the previously named kinds adjacent to 

 its type locality. 



Equus burchellU hdhmi Matschie 



Equus bohmi Matschie, Sitzb. Ges. Naturf. Freunde, Berlin, p. 131, 1892. (Fan- 

 gani River, Tanganyika.) 



Remarks: No specimens of this zebra have been examined. Ham- 

 ilton (1920, p. 346) cites observations of this animal from the Bor 

 District but comments that they are probably stragglers during the 

 dry season. The same author says that lat. 7°30' N. is probably the 

 extreme northern limit of the range. 



