182 MAMMALIA. 



perament, and the services it renders, are all too well known to 

 need a comment. 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 j 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 j 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. 



E. montanus, Burchell ; the Onagga or Dauw, Fred. Cuv. 

 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 j legs and tail white. 



ORDER VIII. 

 RUMINANTIA.(l) 



This order is perhaps the most natural and best determined 

 of the classj for nearly all the animals which compose it have 

 the appearance of being constructed on the same model^ the 

 Camels alone presenting some trifling exceptions to the gene- 

 ral characters. 



The first of these characters is the total absence 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 always six throughout, have their 



(1) The PicoBA, 'Lin. 



