MAMMALIA. 
127 
of the tail. The wild race as large as a moderate sized horse. 
Native country unknown. 
Equus zebra. — The Mountain Zebra. 
Plate XXVII. fig. 1. 
Fur cream-white, with numerous brownish-black transverse 
bands of more or less depth of shade ; lighter down the middle 
of each band. Size of a small horse. Inhabits Africa. 
ORDER IX.—RUMINANTIA. 
Having three kinds of teeth ; destitute of incisory teeth in the 
upper jaw, with usually eight in the lower one, which are op¬ 
posed to a callosity on the upper gums. In some species there 
are canines in the upper jaw, and others have them in both jaws ; 
grinders, twelve in each jaw, marked with two double crescents 
of enamel on their crowns, of which the convexity is outwards 
in the lower, and internal in the upper jaw ; articulations of the 
jaw, adapted for a triturating motion ; without clavicles ; limbs 
disposed for walking; feet with two hoofed toes ; metacarpal 
and metatarsal bones united ; organs of digestion calculated for 
ruminating, consisting of four stomachs ; intestines long; from 
two to four inguinal mammae; males always with horns, and 
also the females in most species. 
The food of the Ruminantia consists always of vegetables. 
They embrace a wide geographical range. 
The order is divided into five tribes. 
Tribe I.— CAMELiDiE. 
Without horns, or succentorial hoofs; feet with horny soles ; 
toes covered with nails ) canines in both sexes. 
Genus 1.— Camelus — Linnceus. 
Generic Character .—Incisory teeth |, canines J-J, false grind¬ 
ers J-}, true grinders ; total 36. Inferior grinders in the 
