LIST OF ILLUSTRATIONS. 



Frontispiece: Georgia Gopher (Geomys tuza). 



Fig. 1. Face of Prairie Gopher (Geomys bursarius), showing grooved front teeth and 

 opening of cheek pouches. 



2. Face of Gray Gopher (Thomomys talpoides), showing plane front teeth and 



opening of cheek pouches. 



3. Left forefoot of Padre Island Gopher (Geomys personal us), showing the rows 



of bristles which form brushes on the sides of the toes. 



4. Outline of skull of Mexican Gopher, showing teeth in normal position. 



5. Base of small apple tree with roots gnawed off by Pocket Gopher. 



6. Map showing geographic distribution of the three genera of Pocket Gophers 



of the United States. 



COLORED PLATES. 



Eed or Prairie Gopher (Geomys uursai'ius). 

 Gray Gopher (Thomomys talpoides). 



COLORED MAP. 



Geographic distribution of Gophers of the genera Geomys and Cratogeomys. 



