480 



AETIODACTYLA. 



Upper incisors present. 



a. Selenodont. Ruminant 



Lateral digits wanting 



b. Bunodont. Non-ruminant 



a'. Snout elongate, with a terminal flat disk 



containing nostrils; feet narrow, outer 

 digits not reaching ground. 

 a", toes 43 



b". Toes 44 



b'. Snout hroad, hairy, no terminal disk ; feet 

 short, broad, outer digits reaching ground 



TYLOPODA. 



Camelidae. 



SUINA. 



Dicotylidae 

 (America). 

 Suidae. 



Hippopotamidae 



(Africa). 



Fig. 157. Bones of the right fore foot in: a. Camel ( Camelus bactrianus), 

 b. Red Deer (Cervtts elaphus), c. Pig (Sus scrofa). U, ulna; It, radius; 

 II, III, IV, V, second, third, fourth, and fifth digit 8 ; c, cuneiform ; 

 I, lunar ; s, scaphoid ; u, unciform ; m, magnum ; td, trapezoid ; m z , m 5 , 

 rudimentary second and fifth metacarpals. (Flower's ' Osteology of the 

 Mammalia.'} 



There are a few terms used in describing the genera and species 

 of Artiodactyle Ungulates that require explanation. 



The muffle or rhinarium is the naked moist area between and 

 around the nostrils. 



The suborbital glands are situated in front of the eye, and each 

 has a circular or longitudinal orifice termed by some " eye-pit." 

 Generally, when the gland is present, there is a corresponding 



