THE CLOUDED BLACK WOLF. 
CANIS NUBILUS. Say. 
To distinguish between the numerous races of Wolves 
which are scattered more or less abundantly over nearly 
the entire surface of the earth; to determine that such 
and such variations are the result of original formation, 
and that such and such others are merely the product of 
accidental circumstances; in other words, to establish 
clear and tangible grounds of specific distinction between 
animals so varied in external appearance, but corres- 
ponding so perfectly in every essential particular, while 
the shades of character by which they differ, although in 
many cases strikingly marked, are for the most part so 
unimportant, or so little permanent, as scarcely to be 
