FEB., 1912. Mammats oF ILLINOIS AND WISCONSIN — Cory. 279 
extremely fond of the Valerian plant; that they lie on their backs and 
play with a string; that they torment a wounded mouse and do not kill 
it for a time, knowing it cannot escape, but that they kill a captured 
bird at once; he also informs us that the males wander forth at night 
and at certain times, “‘commonly called cat-wralling,’ they have a 
“peculiar direfull voyce.”’ 
KEY TO THE GENERA. 
Size large; tail more than 15 inches long; three premolars and one molar on each 
side of upper jaw. Genus FELIS, p. 279. 
Size medium; tail less than 15 inches long; only two premolars and one molar on 
each side of upper jaw. Genus LYNX, p. 286. 
KEY TO SPECIES. 
GROUP 1. Tail more than 15 inches long; total length more than 60 inches; pre- 
molars a total teeth 30. 
Size large; tail long; general color tawny or grayish brown. 
PANTHER or CouGAR. 
Felis couguar, p. 280. 
GROUP 2. Tail less than 15 inches long; total length less than 50 inches; premolars 
cae total teeth 28. 
2-2 
Color grayish; feet very large; tail less than 5 inches long (to end of tail bone); 
no brown band or collar on throat; ear tufts usually 1.50 to 2 inches long; 
end of tail wholly black. CanapDA Lynx. Lynx canadensis, p. 287. 
Color pale rufous brown mixed with grayish, more or less dark spots or streaks on 
head and legs; throat with distinct pale brown collar; belly white, usually 
with more or less dusky spots; end of tail not entirely black, the under side 
being white. Wip Cat, Bay Lynx. Lynx ruffus, p. 291. 
Subfamily FELIN/. 
Genus FELIS Linnzus. 
Felis Linneeus, Syst. Nat., X ed., I, 1758, p. 41. Type Felis catus Linn. 
Body comparatively slender and long; tail long, more than % total 
length; face short and rounded; ears not tufted; claws completely 
retractile; zygomata wide; bulle large; three premolars on each side 
of upper jaw; upper. carnassial with distinctly cusped inner tubercle; 
other characters as given for the family. 
Dental formula: I. 378 Pin 3-3, M. 
on ae 
