KEY TO INDIANA MAMMALS. 



44:} 



DD. Horns (antlers) solid and shod each yc^ar. (Dcor, oik, etc.) 



Family Ckrvid.ve, p. 4/)4 

 E. Size large; hoi<i;ht at shoulder about five feet; antler lour to 

 five feet in lon^th (Wapiti or elk). 



(Jenus Cervus, p. 454 



EE. Size smaller; height at shoulder about three feet; antler one 

 and a half to two feet. (Deer ) 



Genus Odocoileus, p. 457 



CC. No hoofs; toes with claws. 



1). I'^ront teeth chisel shaped and separated from the remainder of 

 the teeth by a wide space, filled by an infolding of the lips. 

 (In the rabbits there are four front teeth in the upper jaw, 

 one pair directly behind the other. All other members of the 

 order have but two incisors above and two below.) (Gnaw- 

 ing animals.) Order Qlires, p. 460 

 E. Two pairs of upper incisors, the one behind the other. (Hares 

 and rabbits.) Family Leporidae, p. 533 

 F. Size large; hind foot five inches or longer. 



Genus Lepus, p. 537 



FF. Size smaller; hind foot less than four and a half inches; 

 common rabbits. Genus Sylvilagus, p. 533 



EE. One pair of upper incisors. 



F. Tail horizontally flattened, without hairs; size large. 

 (Beavers.) 



Family Castoridae, Genus Castor, p. 487 

 FF. Tail round or slightly flattened at the sides. 



G. Fur mixed with stiff spines or quills. (Porcupines.) 



Family Erethizontidae, Genus Erethizon, p. 530 

 GG. Fur without quills or stiff spines. 



H. With external cheek pouches which open outside 

 the mouth; claws very long; tail short and 

 nearly naked; form and habits of moles. (Pocket 

 Gophers.) 



Family Geomyidae, Genus Geomys, p. 524 

 HH. No external cheek pouches; claws shorter. 



I. Four or more grinding teeth in each jaw^; tail 

 with long hairs, often bushy. (Squirrels, etc.) 



Family Sciuridae, p. 460 

 J. Fur very soft and dense; a thickly furred 

 membrane along the side between the fore 

 and hind legs. (Flying squirrels.) 



Genus Sciuropterus, p. 484 

 JJ. No membrane along the sides. 



K. Body short and heavy; skull broad and 

 flat on top. (Woodchucks.) 



Genus Marmota, p. 479 

 KK. Body slender; head and skull more 

 rounded. 



