MUSTELlDiE. — III. 17 



/. CANIS, Liinii^us. ^YoLVEs. 



1. C. lupus, L. Wolf. Color exceedingly variable; 

 northward it is chiefly gray, southward more and more 

 l:)lackish and reddish, till in Florida black wolves pre- 

 dominate, and in Texas red ones. N. A. and northern 

 joarts of the Old World. {C. occidentalism Auct.) 



2. VULPES, Brisson. Foxes. 



1. /. vulpes, L inn^Lis. Red Fox. Cross Fox. Silver 

 Fox. Black Fox. Chiefly red, with black feet and ears; 

 tip of tail white. A single species, widely variable in 

 color, as indicated by the common names. N. Am. 

 Europe i^V. fulvus^ A.\iQ,i.) 



3. UROCYON, Baird. Gray Foxes. 



1. U. cinereo-argentatus, (Schreb.) Coues. Gray 

 Fox. Chiefly gray; fur dusky or fulvous, hairs hoary at 

 tip; tip of tail usually dark. Penn. S., W. to the Pacific. 



FAMILY III. — MUSTELID^. 



{The Weasels.) 

 Carnivora either plantigrade or digitigrade, with the 

 toes 5-5. Molars J| (rarely \\\ ); the upper and the last 

 lower one tubercular; no coecum. Most species provided 

 with glands near the anus which secrete a fetid liquid. 

 Some are strictly carnivorous while others are rather om- 

 nivorous. Size usually medium or small. They are found 

 in all parts of the earth excepting the Australian region. 



* Last or true moUu' of upper jaw short, small, transversely elon- 

 gated; toes short; claws retractile. (Musteline.) 



f Teeth 38; body slender; feet digitigrade ; tail rather long; low- 

 er first molar with an internal tubercle. . Mustela, 1. 



