272 



CLASS MAMMALIA. 



may be discriminated, consist only in its colours, and chiefly 

 in those of the face. 



The head is covered with greenish hairs, deeper on the 

 occiput than on the forehead. The hairs of the neck, of 

 the back, the shoulders, the flanks, the croupe, and the 

 basis of the tail, exteriorly are of a purer brownish green 

 than those of the head. Those of the thighs are of a green- 

 ish gray, and those of the legs, grey with a slight yellow 

 tint, and these different colours result from the coloured 

 rings with which the hairs were covered, all grey at their 

 lower half, and alternately black and yellow, very clear at 

 the gray parts, brownish at the brown parts, and pure and 

 unmixed at the green parts. The lower portions of the 

 body and the internal facings of the limbs were of a deeper 

 gray, than on the neck, breast, and belly. The lower 

 part of the tail at its back was also gray, and all the 

 rest, that is, about two thirds of its length round about, 

 was red. 



On each side of the cheeks were thick whiskers, bright 

 yellow between the eyes and ears, but assuming a paler 

 tint below the latter, and passing to a white as they ap- 

 proached the under jaw. Some black hairs separated the 

 yellow part of these whiskers, from the green hairs on the 

 head. The ears and skin of the hands flesh colour. All 

 the face is of a fine lapis-lazuli blue, which assumes a 

 blackish tint on the sides of the upper lip, and on the lower 

 lip. But what renders the face of this animal peculiarly 

 remarkable, is a white spot in the form of a broken chev- 

 ron, which is under the nose on each side upon the upper 

 lip, and has exactly the appearance of two mustachios. It 

 is in consequence of this peculiarity that the animal re- 

 ceived from Buffon the name of Moustac. 



The Mustache may be, when adult, about a foot and a 

 half in length. 



F. Cuvier, whom we have had occasion to cite so fre- 



