Feb., 1912. Mammals of Illinois and Wisconsin — Cory. 321 



of beef suet the size of a walnut and the cavity securely closed, to keep 

 out the moisture. Lean meat should not be used, as the juice soon 

 dissolves the gelatine of the capsule. The necessary number of poisoned 

 baits may be prepared and carried^ in a tin can or pail. They should 

 never be handled except with gloved hands or forceps. The baits may 

 be dropped from horseback along a scented drag line made by dragging 

 an old bone or piece of hide well saturated with the fetid scent, or they 

 may be placed around or partly under any carcass on which the wolves 

 or coyotes are feeding, or along trails which they are in the habit of 

 following. Gelatine capsules quickly dissolve in the juices of the 

 stomach ; Strychnine taken on an empty stomach sometimes kills in a 

 very few minutes, but on a full stomach its action is much slower, and 

 the animal may have time to travel a considerable distance." 



Map illustrating supposed distribution of Big Wolves in the United States, southern Canada and 

 northern Mexico. The range limits of the various forms have not been satisfactorily determined. 



Canis nuhilus Say. (Long's Exped. Rocky Mts., I, 1823, p. 169.) Type locality — 



Vicinity of Council Bluffs, Iowa. 

 Canis occidentalis (Richardson). (Fauna Bor. Amer. I, 1829, pp. 60-65.) Type 



locality — Northern North America. 

 Canis albus (Sabine). (Franklin's Narrative, Journ. to Polar Sea, 1823, p. 655.) 



Type locality — Fort Enterprise, Mackenzie, Canada. 

 Canis ater (Richardson). (Fauna Bor. Amer., I, 1829, p. 70.) Type locality — Not 



definite, but now generally restricted to Florida. 

 Canis mexicanus Linn. (Syst. Nat., XII ed., I, 1766, p. 60.) Type locality — 



Mexico. 

 Canis rufus (Aud. and Bach.). (Quadrupeds of N. Amer., II, 1851, p. 240.) Type 



locality — Texas. Smaller and more reddish in color than other members of 



this group. In size it is small for a "big wolf" and large for a Coyote. 



