Lriet of IUu»tratlofi6 



Young Woodland Caribou (Rangifer caribou) . 



Typical Heads and Antlers of Cervidae 



Pronghorn ( Antilocapra americana) .... 



Young Pronghorns (Antilocapra americana) 



Pronghorns (Antilocapra americana) 



Male Pronghorns (Antilocapra americana) 



Mountain Goat (Oreamnos montanus) 



Young Cow Musk Ox, about 16 months old (Ovibos mos 



chatus) 



Bull Bison (Bison bison) 



A Herd of American Bison (Bison bison) . 



Nest of Young Cottontails 



Young Cottontail Among the Cabbages (Lepus floridanus 



mallurus) 



Varying Hare (Lepus americanus virginianus) 



Little Chief Hare, or Pika (Ochotona princeps) 



Canada Porcupine (Erethiion dorsatus), with quills thrown 



forward. In wild state 



American Porcupine Swimming, with quills projecting (Ere 

 thiion dorsatus) 



Western Pocket Gopher (Thomomys) 



Western Long -tail Mouse, caught in the Bitter Root 

 Mountains . . . • • 



Long-tailed Jumping Mouse (Zapus hudsonius) 



Mice and Shrews of the Eastern States 



Western and Southern Mice and Rats 



Muskrat (Fiber ^ibethicus) ..-,., 



Western Wood Rat, female (Neotoma) 



Cotton Rat (Sigmodon hispidus littoralis) 



Western Bushy-tailed Wood Rat (Neotoma) 



White-footed Mouse (Peromyscus), enlarged 



White-footed Mouse and Young (Peromyscus leucopus) 



House Mouse on Trap (Mus musculus) 



Common, or Norway Rat (Mus norvegicus) 



Canadian Beaver (Castor canadensis) . • 



bb 

 56 

 58 

 60 

 62 

 64 

 66 



69 

 71 

 74 

 76 



76 



87 

 92 



94 



96 

 99 



102 



102 

 1 10 



H3 

 122 

 128 

 131 



131 

 •35 

 138 

 142 

 142 

 147 



