182 MAMMALIA. 
perament, and the services it renders, are all too well known to 
needacomment. The hoarseness of its voice, or bray, depends 
upon two small peculiar cavities situated at the bottom of the 
larynx. 
E. zebra, L.; Buff. XII, i. (The Zebra.) Nearly the same 
form as the Ass; the whole animal regularly marked with 
black and white transverse stripes, originally from the whole 
south of Africa. We have seen a female Zebra successively 
produce with the Horse and the Ass. 
E. quaccha, Gm., Buff. Supp. VII, vii. (The Couagga.) Re- 
sembles the Horse more than the Zebra, but comes from the 
same country. The hair on the neck and shoulders is brown, 
with whitish transverse stripes ; the croup is of a reddish grey; 
tail and legs whitish. The name is expressive of its voice, 
which resembles the barking of a Dog. 
£. montanus, Burchell; the Onagga or Dauw, Fred. Cuy. 
Mammif. (The Onagga.) An African species, smaller than 
the Ass, but having the beautiful form of the Couagga; its co- 
lour is a light bay, with black stripes, alternately wider and 
narrower, on the head, neck and body. Those behind slant 
obliquely forwards ; legs and tail white. 
ORDER VIII. 
RUMINANTIA.(1) 
This order is perhaps the most natural and best determined 
of the class, for nearly all the animals which compose it have 
the appearance of being constructed on the same model, the 
Camels alone presenting some trifling PRcep Hong, to the gene- 
ral characters. i | pe 
The first of these characters is the total alivenee of incisors — 
in the upper jaw, they being found only in the lower one, and 
nearly always eight in number. A callous pad is substituted 
for them above. Between the incisors and the molars is a va-_ 
cant space, where, in some genera only, are found one or two 
canini. The molars, almost st ae Setpoushgut, have their 
= Pen Lin. 
