TARSIUS BANCANUS. 
As the teeth of the Tabsius Bakcantjs differ in several particulars from those 
of the other Tarsii, it may contribute to the elucidation of this genus, to present a 
detailed description of them, with reference to the Plate of Illustrations. — See PI. of 
111. Let. G. (a) upper-jaw, 1 front tooth ; 2 Canine ; 3, 4, 5, 6, 7, Grinders : (b) 
lower-jaw, 1 front tooth ; 2 Canine ; 3, 4, 5, 6, 7, Grinders. 
I shall further add an enumeration of the different species of this genus that 
have hitherto been described, with their characters, as given by Professor Gotthelf 
Fischer in the Works cited. 
Teeth of Tarsius Bancanus. — Front Teeth: in the upper-jaw none interme- 
diate ; exteriorly, one on each side, minute, cylindrical, consisting of a simple point, 
projecting about one- third of a line beyond the gums : in the lower-jaw, two inter- 
mediate, long, attenuated towards the point, which is slightly rounded, projecting 
obliquely forward, diverging in a small degree from the middle, where they approach 
nearest to each other, surrounded at the base by a slightly projecting margin. 
G. a, 1. b, 1. 
Canine Teeth. — In the upper-jaw one on each side, slender, somewhat angular, 
acute, inclining obliquely inward : in the lower-jaw one on each side, attenuated, com- 
pressed, somewhat shorter than the front teeth, but closely applied to them above, 
and having the same direction. G. a, 2L b t 2. 
* 
Grinders. — In the upper-jaw five ; the first rather broad at the base, angular, 
simple, pointed : the second and third smaller than the first, but larger successively, 
somewhat compressed, each having a single point, with an additional projection 
anteriorly and posteriorly, representing a compressed base, from which the point 
rises ; the fourth and fifth very large, and nearly equal, consisting of a broad base, 
from which project three high, acute, somewhat angular points, one on the interior, 
and two on the exterior margin, having in the middle a considerable concavity : in 
the lower-jaw five, the three anterior consisting of a single point ; the first broad at 
the base, pyramidal, acute, somewhat oblique, encircled at the base by a margin, larger 
than the second and third, which being removed somewhat interiorly, in consequence 
of the curvature of the lower-jaw, have a disposition slightly different from the 
corresponding teeth in the upper-jaw : the fourth and fifth are large, and resemble 
those which are opposed to them; the points on their surface are less regular; they 
form two transverse ridges in the anterior and posterior part of the crown, between 
which is a considerable groove. G. (a) 3, 4, 5, 6, 7. {b) 3, 4, 5, 6, 7. 
