a LLOYD'S NAM@RAL HISTORY. 
upper carnassial tooth, or the large tooth on the right of the 
upper figure in the illustration, consists of an external cutting 
blade formed by three sharp lobes or cusps placed in the same 
line, and of a blunt tubercle on the inner side. The lower 
carnassial (shown on the left of the lower figure in the illustra- 
tion), on the other hand, consists simply of a cutting blade, 
formed by two nearly equal-sized lobes, without any cusp on 
their inner side, or any projecting heel on the hinder border. 
In the skull the auditory bulla is uniformly smooth and 
Side View of Upper and Lower Teeth of the Lion. In the upper figure 
the incisor teeth are turned to the left, and in the lower in the opposite 
direction. 
bladder-like, without any external trace of a transverse con- 
striction. 
In conformity with the contour of the head, the skull of the 
typical Cats, as shown in the annexed woodcut, has a short 
facial region; while the zygomatic arches, in order to afford 
space for the powerful muscles necessary to work the jaws, are 
very widely expanded. In the figured specimen, as in the 
skulls of the other large members of the family, the nasal bones, 
forming the roof to the cavity of the nose, are very short and 
wide; but in some of the smaller Cats they become narrow, 
