508 ADDENDA ET CORRIGENDA 



with the survivor to the Grand Seigneur. Ludolphus was quite 

 right in his suororestine that the difference in coloration was due to 

 difference environment, for (as stated above, p. 58 n.) the Somali 

 race of E. grevyi has the ground colour pale brown or ochre with 

 chocolate stripes. 



P. 64. Ward's Zebra. This sub-species, named after 

 Mr Ward by Prof. Ewart, " is found in the vicinity of Lake Nakuro 

 to the north of the Lombori Hills not far from Naivashi and the 

 Uganda Railway. In its long ears, narrow hoofs, and gridiron it 

 approaches the mountain zebra, and it is practically the mountain 

 zebra of the Naivashi plateau." Prof. Ewart (who has kindly 

 supplied me with this note) will shortly publish a full paper. 



Equus Foai. Mr Pocock has kindly furnished me with the 

 following very complete note on this most important sub-species. 



EQUUS FOAI. 



Prazak and Trouessart, Bull. Mus. d'Hist. Nat., Paris, v. 



pp. 350-354, 1899. 



Ground colour ochre yellow ; of belly white. Stripes black, 

 narrow and numerous, those on tlie body meeting the mid-central 

 line. Legs completely striped externally and internally to the 

 fetlocks ; pasterns black. Muzzle deep chestnut-brown, without 

 yellowish tan colour above the nostrils. On the neck thirteen 

 stripes cross the mane between the ear and the shoulder stripe. 

 Behind the shoulder stripe there are from 8 to 10 complete vertical 

 stripes, with their dorsal extremities at right angles to the spinal 

 stripe, which is in contact with only the first and second of these 

 (1 to 9). The last body stripe with its dorsal end turned obliquely 

 backward on to the croup and running parallel with the spinal 

 stripe towards the root of the tail. The hind-quarters from the 

 croup down to a point in a line with the belly, marked with about 

 9 obliquely longitudinal stripes. The upper two are united by 

 7 or 8 very short transverse stripes like the so-called gridiron 

 of Crawshay's zebra. The anterior extremities of the upper 2 or 

 3 meet the last body stripe ; but none extend for more thtin a few 

 inches beyond the haunch on to the body. There are no " shadow 

 stripes." The spinal stripe is narrow behind the withers but 

 expands on the croup to 4 or 5 cm. Except for a short distance 

 behind the withers it is isolated from the body and croup stripes 

 throughout its length. Tail striped, its tuft black. Ears with 



