ILLUSTRATIONS 
MAPS 
PAGE 
Contour Map of Colorado ..... xv 
Map showing distribution of PrairieDogs in Colorado 149 
Map showing distribution of Eutamias a. operarius, 
E. minimus, and E. m. consohrinus in Colorado. 177 
TEXT-CUTS 
FIG. 
54. Striped Spermophile, Citellus tridecemlineatus 
pallidus .... Frontispiece 
1. Measuring a Mammal ..... xvii 
2. Dorsal view of skull of Cat .... 2 
3. Under surface of skull of Cat .... 2 
4. Side view of Cat skull ..... 2 
5. Portion of skull of Wolf ..... 2 
6. Buffalo Bull 6 
7. Buffalo 7 
8. Pronghorn, Antilocapra americana . . .15 
9. Pronghorn, Antilocapra americana . . .17 
10. White-tailed Jack Rabbit, Lepus campestris, 
dorsal view of skull . . . . . 32 
11. Rocky Mountain Snow-shoe Rabbit, Lepus 
bairdi, dorsal view of skull • • • 39 
ix 
