FAMILY. 
CHERVIDAE. 
Incisors } ; canines —, or wanting ; molars e=6. Horns solid, deciduous, (except in the giraffe,) not encased by horn } 
sometimes wanting. Feet bifid. 
The members of this family agree with the following in the dentition and structure, and shape 
of the feet ; they differ, however, in the character of the horns when present, (they are wanting 
in the musk deer.) There is not the same variety of shape as in the hollow-horned ruminants, 
although there are several very distinct forms of generic and sub-generic value. 
The deer are very widely spread over the whole world, few regions being without one or more 
peculiar species: They appear able to withstand the rigor of an arctic winter, or the fiercest 
rays of the tropics. The new world possesses quite a notable proportion of the species ; no less 
than nine of which are found in North America alone. 
There are three principal divisions of this family; the musk deer, the true deer, and the 
giraffes. The musks differ from the true deer in being without horns, and any lachrymal sinus. 
The male has canine teeth usually projecting far beyond the mouth. Their size is very small, 
some of the species being by far the smallest known ruminants. Thecamelopard has short, 
solid horns, which are covered by the skin. The feet, too, though didactyle, are without the 
accessory hoofs of the deer. 
Of the musk deer, there areno living representatives in America, Some of the fossil forms 
from the Mauvaises Terres of Nebraska approach very closely to them, however. There is 
nothing at all similar to the giraffe on this continent. 
