56 ZOOLOGICAL GARDENS. 
smaller in size and of a more conical form. Before the 
canines of each jaw there occurs another interval, which 
is occupied in the upper, when the mouth is closed, by 
the canine of the lower; while that of the upper pro- 
jects from the mouth in the form of a tusk, and is not 
received into any corresponding groove. These teeth 
are from an inch to an inch and a quarter in length, 
strong, thick, and triangular. They are succeeded by 
a third interval, behind which, on each side of either 
jaw, are ranged six nearly equal molars, instead of 
seven, the number met with in the common Hog. 
In the latter all the feet are well known to be formed 
of two anterior toes, and these are properly speaking 
intermediate between two others which take a back- 
ward direction, are much smaller in size, and placed so 
much above the level of the foot as seldom to touch 
the ground in walking. The same structure is observed 
in the Peccaries, with the exception that on their hind 
feet the outer one of the smaller or posterior toes is 
entirely wanting, and they have consequently but three 
toes instead of four. Their head is shorter and broader 
than that of the Hog ; but the moveable snout by which 
their face is terminated is proportionally longer, and its 
flat and truncated extremity is bordered by a more 
expanded margin. The legs are also slenderer in their 
proportions ; and the tail, which is scarcely visible 
among the bristles, instead of being taper, conical, and 
curled upwards, is extremely short, remarkably flat, 
and completely pendulous. But the most striking dis- 
tinction between them and every other known species 
of quadruped appears to consist in a large gland placed 
immediately beneath the skin on the middle of the 
loins, and readily discernible on turning up the long 
bristles by which it is covered. This operation is, 
however, far from pleasant, and is besides by no means 
