324 



VERTEBRATE ANIMALS OF THE UNITED STATES 



Subspecies of G. tuza 



G. t. tuza (Ord.). Pine barrens of Georgia; Austroriparian zone. 



G. t. mohilensis Merriam. Color very dark: Alabama and Florida. 



G. t. floridanus (Audubon & Bachman). Size larger; color darker: 

 peninsular Florida. 



G. bur sarins (Shaw) (Fig. 174). Color dark reddish brown; feet 

 white; length 270 mm.; tail 80 mm.; hind foot 35 mm.; upper incisors 

 with 2 grooves: upper Mississippi Valley; southward to eastern Kansas 



Fig. 175. — Geomys tuza (from Merriam). 



and southeastern Missouri; westward into the Dakotas; eastward to 

 Lake Michigan; very common; i litter annually of i to 7 young. 



G. breviceps Baird. Color dark russet brown; length 219 mm.; tail 70 

 mm.; hind foot 28 mm.; size small: lower Mississippi Valley and Gulf 

 coast of Louisiana and Texas; northward into Kansas. 



Subspecies of G. breviceps 



G. b. sagittalis Merr. Size smaller: Gulf coast about Galveston Bay. 



G. b. attwateri Merr. Size larger: coastal plain and islands from 

 Nueces Bay to Matagorda Bay. 



G. texensis Merr. Color light brown mixed with black; feet and 

 under parts white; length 203 mm.; tail 60 mm.; hind foot 28 mm.: 

 central and southern Texas. 



G. arenarius Merr. Colors pale; length 258 mm.; tail 88 mm.; hind 

 foot 7,2) mm. : valley of the upper Rio Grande. 



G. lutescens Merr. Colors pale drab or fulvous; beneath whitish; 

 length 256 mm.; tail 77 mm.; hind foot 32 mm.: Great Plains from 

 South Dakota to Texas; eastern Wyoming and Colorado ; Upper Sonoran 

 zone. 



2. Cratogeomys Merriam. Upper incisors grooved in the middle: 

 I species in the L^nited States. 



