18 IvIAMMALS. 



ff Teeth 34; body slender; feet digitigrade ; tail usually long; 

 sectorial tooth without internal tubercle. . Putorius, 2. 



Iff Teeth 38 ; body stout ; feet sub-plantigrade ; tail as long as 

 head, very full and bushy. .... Gulo, 3. 



** True molar of upper jaw very large, sub-triangular, tubercu- 

 lar; fore claws much lengthened, for digging. (Melin^.) 



a. Body short and stout ; tail very short ; teeth 32. Taxidea, 4. 



*** True molar of upper jaw quadrangular, wide, very large, with 

 an outer cutting ridge; claws non-retractile, fore claws 

 lengthened, fossorial. ( Mephitin^.) 



h. Snout pointed ; colors black and white ; fetid glands highly 

 developed ; teeth 34 Mephitis, 5. 



**** True molar large, quadrate; teeth 36; body elongated; toes 

 palmate, adapted for swimming. ( Lutkin^.) Lutra, 6. 



/. MUSTELA, Liniueus. Martens. 



1. M. americana, Turton. Sable. Pine Marten. 

 Chiefly reddish yellow, clouded with black; legs and 

 tail, blackish; length less than two feet. Maine to 

 Oregon, and northward. 



2. M. pennant//, ^rx\ehen. Fisher. Black Cat. Color, 

 variable; belly, legs, tail, and hind parts chiefly black; 

 leno-th more than two feet. Northern N. A. 



2. PUTORIUS, Cuvier. Weasels. 



1. P. ]/u /gar is, Cuvier. Least Weasel. Liver-brown, 

 white beneath ; usually white in winter ; tail never 

 really black at tip ; body 6 to 7 inches long. N. U. S. 

 and northward, also Old World. 



2. P. ermineus, Cuvier. Common Weasel. Ermine. 

 Colors various ; tip of tail usually black ; white in 

 winter, northward. Length of body 8 to 11 inches. 



