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THE DUSKY WOLF. 
Lupus nubilus, WiEp. 
PLATE III. 
OBSERVED in latitudes to the north of the Canadas, 
presents the counterpart to the Russsian black 
variety of the mountains, and approximates also 
more to dogs. It is of a greyish black partially 
tinged with brown. 
These species of the two continents may there- 
fore be considered as identical at present, forming 
three ancient and permanent races. 
Although the wolves of America, like the foxes 
of the same part of the world, are varied in their 
colours, we think Baron Cuvier mistaken when he 
thought the older authors, who minutely described 
the Mexican, are not to be credited, for the species 
sent by Mr Humboldt is evidently not different, 
and is undoubtedly the same as the caygotte of the 
natives and coyotl of Fernandez. 
