34 
riTER MAMMAL GALLERY. 
among other points^ by tlie entirely different form of 
their anterior digging limbs, which are narrow, and each 
provided with an enormous central claw, the outer toes being 
quite small (see fig. 19, B). Several species of Chrysocliloris 
( 240 , 241 ) are shown, some remarkable for the iridescence of 
their fur, which fades when dried and stuffed. 
The Taguans or Flying- Lemurs, Galeopithecus ( 284 , fig. 20), 
of the Indo-Malav countries represent the group Dermoptera^ 
which is classed by some with the Insectivora and by others as a 
distinct order. These animals are about the size of cats, with 
a lateral extension of the skin of the body, supported by the four 
limbs and tail, and forming a sort of parachute, by means of 
which they can glide through the air for considerablo distances 
Fig. 21. 
from tree to tree ; their flying leaps are, however, always in a 
descending direction, as in Flying-Squirrels and Flying-Lizards, 
and unlike the flight of Bats. Flying-Lemurs live exclusively 
on vegetable food. In the skeleton the radius and ulna are 
partly joined together, in order to render the fore-arm more 
rigid ; the hip-bones are united below by a long bony union ; 
and in the skull the muzzle is broad and flattened, the socket 
of the eye nearly surrounded by bone, and there are well- 
developed cheek-arches. The dentition of these animals is 
altogether unique, especially the lower incisor teeth (fig. 21), 
which are of a very remarkable pattern, being so deeply notched 
as to appear like minute combs. 
