204 
LEMURS. 
is capable of being fully opposed to the others), the toes of the foot are joined 
together by a web as far as the end of their first joints. For those who desire to 
enter more fully into the structure of these lemurs, it may be mentioned that the 
total number of teeth in the adult condition is limited to 80; the series being 
represented by the formula if, All the members of this group differ 
from the other lemur-like animals in that they do not give birth to more than a 
single young one at a time. From this circumstance, together with certain features 
in their structure, these indris are regarded as the most highly organised of all 
the indri lemur (| nat. size). 
the lemurs, and are accordingly placed at the head of the list. They subsist ex¬ 
clusively on a vegetable diet. 
The indri is sufficiently distinguished from the other two genera included in 
the group by its mere stump of a tail; although there are also certain other 
features which support its right to stand as the representative of a distinct genus. 
We have already mentioned that the indri is the largest of all the lemurs; and 
in a fully adult animal the length of the head and body is about two feet. Although 
there is great individual variation in this respect, the indri is very strikingly coloured. 
Very frequently the forehead is blackish, but, like the cheeks and throat, it may be 
grey. The head, shoulders, back, and arms are of a full velvety black ; and the black 
ears are large and prominent, and covered with longer hairs than those on the head. 
