5 
SUB-CLASS MONODELPHIA. 
\ 
SUPER-ORDER EDUCABILIA. 
ORDER CARNIVORA. 
FAMILIES OF CARNIVORA. 
* Intestinal canal provided with a cecum; feet digitigrade ; toes 5-4. 
t Teeth, 28 to 30; dentition, M | 7 pm. 3 C. es 1 ax 2; head broad; snout short, 
decurved; claws sharp, aa eal retractile. - . : C 2 FELIDZ. 
tt Teeth, typically 42; varying poumeen 38 and 46 (the pue anit being the varying 
element.) Dental formula, M. 3 2 (5-3 3), pm. zc: 1, 18 3x2. .'. © CANIDE. 
* Intestinal canal without a cecum; feet usually plantigrade, if not, toes 5-5. 
t Teeth less than 40; body rather slender; feet often more or less perfectly digitigrade ; 
» toes 5-5. : . . : ° MACOEELIRDAR, 
tt Teeth 40 or 42; body a feot Coen dloavitonomte 
a. Tail rudimentary. teeth 42; lower jaw with three true molars; body very 
large and heavy. d 6 : : : c ‘ e URSID 2. 
aa. Tail well developed; teeth 40; ee jaw slender, with two true molars; 
body moderately stout. . : wires : ; .  PROCYONIDA, 
FAMILY FELIDA. 
The Cats are digitigrade carnivora, with the toes 5-4. They are read- 
ily known from allied families by the retractile and very sharp, com- 
pressed claws. The palms and soles are densely hairy, with naked pads 
under each toe and the ball of the foot. The dentition is reduced to its 
simplest elements as oy Paes ae Ree incisors, canines, 
and molars. Formula, i. $3; ¢. 5+; pm. 3:3, or 4:3; m. $:}==30 or 28. The 
‘canines are long, sharp, more or less curved, seule slightly compressed, 
and in existing cats possess two longitudinal furrows on the outer side. 
The posterior molar of the upper jaw, the only permanent one, is very 
small, and its crown transverse; in front of this is a large sectorial pre- 
molar, with a smaller tricuspid one in front of it. The first premolar is 
very small—absent in Lynx. In the lower jaw the posterior molar is 
sectorial, with two smaller compressed premolars anterior to it. The 
second upper and first and second lower premolars are trilobed, the cen- 
tral lobe highest, and the lateral sometimes with accessory notches or 
lobes. 
KEY TO THE GENERA OF FELID. 
* Four molars above on each side (pm. 5 3-3); tail at least half the length of trunk; f 1 
compact and glossy; shoulders high; ears not tufted at tips. . . . FELIS. 
**Three molars above on each side (pm. a) ; short truncated tail; ears triangular, 
tufted. . 4 : . ° : . ° ° : ° ° ° . LYNX. 
