174 Dana on the Classification of Animals 
jaws when none elsewhere. The male Musk-deer is aided b 
long canines; yet it is a very timid animal, and although it 
takes extraordinary bounds when fleeing from a pursuer, it is 
said to become very soon exhausted, and thus is a little after the 
Grasshopper-style among hypotypic Insects. The Llamas spit, 
amel has a body out of proportion to its legs, and 
exhibits awkwardness in features and gait; its hump is ag ab- 
normal growth of fatty and cellular tissue, having no functional 
value beyond that of serving as fuel for the craft when out on 
the desert; and its formation evinces large vegetative powers 
with consequently feeble systemic control. ; 
d.) In the presence of canines in most of the species; and 
in the Anoplotherids the set of teeth, besides being complete, 
having the canines short and not projecting, as in Man.— 
The variation from the Ruminant type in the teeth shows a 
tendency to return to normal regularity and simplicity, as 18 
common in inferior species (Art. 1, pp. 826, 440), and is nota 
mark of elevation toward the Pachyderms. 
Owen observes that an Anoplotherid resembles, in its absence 
of horns, its divided metatarsals and metacarpals, its lax toes, 
and its even and normal number of teeth, “the embryo Rumr 
through adult life. He speaks of it, again, : ; 
features of the more generalized (or less specialized) Mammalian 
type, and remarks upon the same as also shown, though les 
strikingly, in the Camel. This relation, so correctly presented, 
hold, that these species are low ™ 
a condition analogous to that of an 
animal in an unfinished or young state is one of comparative 
feebleness. The embryological resemblance, on this view, & 
tends not only to form but also to force. | 
e Pachydermatoid qualities in the Moschids, and some among 
those so regarded in the Camelids, correspond therefore to 4 
degradation of the Ruminant-type. . 
to bring out the Ruminant type-structure. It here appears ‘ 
the relaxed or enfeebled condition of that force which ] = - 
a lax state of the digits or extremities of the limbs is attend 
by modifications of the teeth—the dental series losing its tYP® 
character by the development of some or all of the missing teeth, 
