22 MANUAL OF NATUEAL 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 (Camelidse). 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- 



