22 MANUAL OF NATURAL HISTORY. 



are short, broad, and flat, except the inner 

 posterior toes which are armed with a crook- 

 ed nail. 



VIII. ORDER SINGLE-HOOFED MAMMALS 

 (Solipedes). 



Hoofs undivided ; six cutting teeth in each jaw ; 



upper lip whole and mobile. Use their hind legs in 



defence. 



1. FAMILY. Horses (Equidse). Characters as given 

 in order. Some have tail covered with long 

 hair throughout its length, others have long 

 hair only at tip. The Equine group have a 

 wart on inside of each leg ; the Asinine 

 have a wart on inside of fore legs only. 



IX. ORDER RUMINANTS (Ruminantia). 



No incisors in upper jaw, a considerable space be- 

 tween incisors of lower jaw and molars, crowns of 

 molars marked with a double row of crescents ; feet 

 with two toes in front, furnished with hoofs, which 

 appear like a single hoof cleft, behind and rather 

 elevated are two small, and more or less rudimen- 

 tary toes provided with hoofs ; generally furnished 

 with horns. 



1. FAMILY. Camels (Camelidae). Without horns ; 



upper lip cleft ; canine teeth in both jaws ; 

 feet broad, expanded, elastic, terminated by 

 two small hoofs ; generally one or more pro- 

 tuberances on back. 



2. FAMILY. Deer (Cervidse). Horns solid, deci- 



