THE BLACK-FRONTED LEMUR. 
LEMUR NIGRIFRONS. Grorr. 
DirFicuLT as it is to arrive at a satisfactory proof of 
the actual specific distinction of these animals, we feel 
convinced that that which is now before us possesses a 
just claim to be separated from the last. Our conviction 
is founded on the examination of numerous specimens, 
in none of which have we observed any essential modi- 
fication of their distinguishing features. Their size, it 
is true, is nearly equal, and there is little, if any, difte- 
rence in their form; but their colours, invariable as we 
have hitherto found them, furnish sufficient ground for 
regarding them as distinct. The present animal has 
the elongated muzzle of the last; but the black colour 
embraces in it the forehead and sides of the face, as 
well as the base of the muzzle; and the hair on the 
former parts, instead of being long and woolly, is short, 
