THE ENDRINAS. QI 
on the outside, are moderately long and buried in the fur, but 
are less movable at will than is the case with the Galagos. 
Their fore-limbs are much shorter than the hind ones. The 
arms, which are united to the body by a parachute-like fold of 
integument, have long, narrow, and strong hands, of which 
the thumb is short, set far back, ani but little opposable. The 
rest of the fingers, except the index, which is short, are long 
and slender, and terminate in a round disc. ‘The feet are elon- 
gate, and the great toe, which is freely opposable to the other 
toes, is very large and broad, being, indeed, nearly as wide 
as the rest of the digits together; the remaining toes are 
united by a membrane as far as the second segment. ‘The 
females have the mamme situated on the breast. 
In the skull the facial region is relatively small, and the 
cranial region relatively large. The external nostrils communi- 
cate with a cavity on the underlying bone; the pre-maxillary 
bones are deeply excavated in front, and the anterior perfora- 
tions in the bony palate, behind the incisor teeth, are large. 
The lower jaw has its angle large, produced backwards, the line 
of union of its two halves being long, and its lateral move- 
ments very limited. In regard to their dentition, the number of 
the milk-teeth in the young individual is greater than that of 
the permanent set in the adult, the formula of the former being 
I2, Cl, P2 [M3], while that of the latter is 12, Ct, P2, M3, 
the lower canine and one lower pre-molar having disappeared. 
In the upper jaw the incisors are very small, the outer one stand- 
ing behind the inner one, with a space between the former and 
the canine ; the canines are long, curved behind, and set close 
up to the anterior pre-molar. ‘The pre-molars are longer than 
they are broad, laterally compressed, and present to the outside 
one main triangular cusp with a small accessory cusp on each 
