DASYUKUSFAMILY. 
395 
laterally, rather small, compressed, and pointed, and 
slightly recurved at the apex : the foremost two incisors 
of the lower jaw are distinctly the largest, and incline for¬ 
wards, hut are somewhat recurved at the point. Narrow 
spaces separate all the incisors of either jaw T . The canines, 
although hut moderately developed, are the largest of the 
dental series: they are compressed, rather -wide in the 
antero-posterior direction, and slightly recurved at the apex. 
The foremost three molar teeth on either side of each jaw 
present the most common form of premolars in insectivorous 
or carnivorous mammals; compressed, pointed, and having a 
small anterior and posterior lobe, which lobes are very distinct 
in the liindermost of the teeth in question, and almost obli¬ 
terated in the foremost, which is the largest of the three. 
The fourth molar of the upper jaw is very small and com¬ 
pressed, and its crown is divided by notches into four small 
tubercles; the following four molars present each five or six 
small prickly points, the number of which differs in the cor¬ 
responding teeth of opposite sides of the jaw; but it is important 
to notice that these four teeth differ from the molars which 
precede them, in having a double instead of a single row of 
tubercles: this difference of structure induces me to believe, 
that the more complicated four posterior teeth are true molars, 
that the small fifth molar corresponds to the principal pre¬ 
molar, and that the three foremost molars are premolars; 
that, in fact, the unusual number of the molar teeth is due to 
the presence of extra premolars. But if we are guided by 
the same kind of differences in the structure of the molars of 
the lower jaw, we find four premolars and five true molars. 
The premolars are of the same form as those of the upper 
jaw, and the true molars differ only in having the inner range 
of tubercles more developed. The ramus of the lower jaw is 
so twisted, that the true molars are directed inwards. 
