342 VERTEBRATE ANIMALS OF THE UNITED STATES 



Subspecies of S. niger 



S. n. niger L. Color more grayish varying to black; nose and ears 

 white: southeastern States, east of the Alleghenies; north to Virginia. 



S. n. neglectus (Gray). Color more reddish: southern New York 

 and New England to central Virginia. 



S. n. rufiventer Geoffrey. Size smaller; length 540 mm.; color 

 deeper ferruginous: Mississippi Valley from the Alleghanies to the 

 Great Plains; southward to northern Louisiana. 



5. n. texianus Bachman. Size smaller; length 475 mm.; colors pale: 

 coast region of Mississippi and Louisiana. 



5. apache Allen. Color of the fox squirrel; upper surface with a 

 broad dorsal band, which may be obscured in the summer; length 554 

 mm.; tail 279 mm.; hind foot 77 mm.: southern Arizona and Mexico; 

 Transition zone. 



5. arizonensis Coues. Color grizzled gray; belly white; tail black 

 above, edged with white, brown beneath; length 540 mm.; tail 265 mm.; 

 hind foot 71 mm.: central and southern Arizona. 



2. Tamias Illiger. Chipmunks. Body small; tail short and not 

 bushy; large internal cheek pouches present; dentition i/i, 0/0, i/i, 

 3/3:1 species; terrestrial squirrels which make their nests in deep bur- 

 rows in the ground, in which they hibernate a longer or shorter time 

 in winter; stores of food layed up. 



T. striatus (L.). Common chipmunk. Color reddish brown, with 

 a middorsal black stripe and with 2 lateral whitish, longitudinal stripes, 

 each bordered on each side by a black stripe; end of tail blackish; rump 

 ferruginous; length 250 mm.; tail 90 mm.; hind foot ^t^ mm.: eastern 

 and central States; Upper Austral and Transition zones; westward into 

 Nebraska and Oklahoma; several litters of young a year, of 4 to 6 

 each; the food consists mainly of seeds and fruits, but also of insects, 

 snails, young birds and birds eggs, and other small animals. 



Subspecies of T. striatus 



T. s. striatus (L.). Southeastern States. 



T. s. griseus Mearns. Size larger; color less reddish: upper Missis- 

 sippi Valley, westward of the Great Lakes; southward to eastern 

 Kansas and Missouri. 



T. s. lysteri (Richardson). Color pale and dull; rump yellowish 

 brown: New England to Lake Huron; Upper Transition and Lower 

 Canadian zones. 



T. s. venustus Bangs. Upper surface dark gray; size large: Okla- 

 homa. 



