130 Field Museum of Natural History — Zoology, Vol. XL 



Description — Back with five black stripes ; the central black stripe 

 bordered by two brownish stripes and a stripe of tawny white on 

 each side of the back separating the two outer black stripes; rest 

 of upper parts rusty brown, with a slight mixture of grayish brown 

 shading into tawny brown on the cheeks and sides, and deep chestnut 

 rufous on the rump and flanks; under parts white or whitish; tail 

 rufous, edged with black. 

 Measurements — Total length, about 9.75 in. (245 mm.); tail vertebrae, 

 3.75 in. (95 mm.); hind foot, 1.25 in. (31.8 mm.). 

 The Southern Chipmunk occurs within our limits in southern 

 Illinois. Howell records it from Olive Branch, Wolf Lake, Woodlawn 

 and Olney, and I have seen a specimen taken in Macon County, in the 

 central portion of the state. Its habits are similar to those of the 

 northern race, Tamias striatus griseus. 



Tamias striatus griseus Mearns. 

 Gray Chipmunk. Gray Striped Chipmunk. 



Tamias striatus griseus Mearns, Bull, Amer, Mus. Nat. Hist., Ill, 1891, p. 231. 

 Snyder, Bull. Wis. Nat. Hist. Soc, II, 1902, p. 115 (Wisconsin). Jackson, 

 Bull. Wis. Nat. Hist. Soc, VI, 1908, p. 17 (Wisconsin). /&., VIII, 1910, p. 87 

 (Wisconsin). Miller, Proc. Bost. Soc. Nat. Hist., XXVI, 1897, p. 30 (Nepigon 

 and Peninsular Harbor, Ontario). 



Tamias lysteri Kennicott, Trans. 111. State Agr. Soc, I, 1853-54 (1855), p. 579 

 (Cook Co., Illinois). 



Sciurus Striatus Lapham, Trans. Wis. State Agr. Soc, II, 1852 (1853), p. 339 (Wis- 

 consin) . 



Tamias striatus Miles, Rept. Geol. Surv. Mich., I, i860 (1861), p. 221 (Michigan). 

 Herrick, Geol. & Nat. Hist. Surv. Minn., Bull. No. 7, 1892, p. 160 (Minne- 

 sota). Elliot, Field Columb. Mus. Pub., Zool., I, 1898, p. 219 (Iowa). 



Tamias striatus lysteri Adams, Rept. State Board Geol. Surv. Mich., 1905 (1906), 

 p. 128 (Michigan). 



Type locality — Fort Snelling, Hennepin Co., Minnesota. 



Distribution — From northern Illinois and Iowa northward throughout 

 Wisconsin, Minnesota and Michigan, and in Canada to about 

 latitude 49°. Specimens from extreme northern Indiana are nearer 

 this form than striatus. 



Description — Similar to T. striatus but larger and more gray; rump 

 more cinnamon brown, not rufous chestnut as in striatus; spaces 

 between black stripes on back distinctly grayish; flanks tawny 

 brown; under surface of tail paler and tail hairs tipped with gray. 



Measurements — Total length, 9.75 to 11.55 '^^- (247 to 288 mm.); 

 tail vertebrae, 3.30 to 3.95 in. (84 to 108 mm.); hind foot, 1.42 to 

 1.50 in. (36.5 to 38 mm.). Average of 30 specimens from northern 



