782 MONOGRAPHS OF NORTH AMERICAN RODENTIA. 
SYNOPSIS OF THE SPECIES AND VARIETIES OF TAMIAS. 
J. Premolars }: 
1. Dorsal surface with two white stripes and five black ones; rump rufous; tail (with the hairs) three- 
fourths of the length of the head and body...--...----.--.--.-------------------STRIATUS. 
II. Premolars +: 
2. Dorsal surface with four white (or grayish-white) stripes and five black ones; rump grayish; tail 
(with the hairs) equal to the head and body..-... .----..--. ---------.---.---. -ASIATICUS, 
a. Sides of body fulvous; dorsal stripes distinct, the white ones more or less mixed with grayish, 
theidark/ones (blacks cee cree ama maim mates aie lm le ee mie flee var. borealis, 
b. Sides of body bright rusty or golden; white of the dorsal stripes purer; the dark stripes strong, 
varying from dark chestnut to black..--.--.0- .2 22. 2-2-2 eo nn var. quadrivittatus. 
c. Merely a faint wash of fulvous on the sides of the body; the dark stripes of the dorsal surface 
very pale chestnut or dark brown rather than black; rump and nape pale whitish-gray ; 
S1ZO SUA fe at he med alm mle te le wlll me var. pallidus, 
d. Colors everywhere pale; the dorsal stripes Beate or nearly so, the medial only being very 
prominent. ..---- ------ ---5 2 een wen nee eee we tn cee wee cee eens eee ee- var. dorsalis. 
e. General color above dull yellowish-brown; the light stripes scarcely lighter than the general 
color of the dorsal surface; the dark stripes black and strong; size large. -..-.var. townsendi. 
3. Above gray, with two broad stripes of white; sides reddish-gray ; tail (with the hairs) rather more 
than half the length of the head and body, with the central portion white beneath; ears 
BMall oo en ee asin anne cae neni ates nslsaeelee mnie =isislse a onal Jameel allele = satel HARRISI. 
4. Above gray, with two white stripes, each bordered on both sides with black, the outer black stripe 
much broader than the inner; tail (with the hairs) about one-half the length of the head 
BAG Ye eee ers NOOSE eho acSoce ce BbSceck cope suaceniocon Cscbcormca ests LATERALIS. 
Tamius as above defined includes four species, one of which runs into 
several localized races, or subspecies. All are represented in North America; 
three of the species (7. striatus, T. harrisi, and T. lateralis) are not found 
elsewhere, while the fourth (7. asiaticus), in some of its forms, ranges over 
not only the western half of North America, but over a large portion of 
Northern Asia and Eastern Europe. 
TAMIAS STRIATUS (Linn.) Baird. 
Striped Squirrel; Common Chipmunk. 
Sciurus striatus CavesBy, Carol. ii, 1731, 75, pl. Ixxv.—Linnzus, Mus. Adolph. Frid. Regis, i, 1754, 8 
(based wholly on an American specimen; cites only Catesby and Edwards); Syst. Nat. i, 
1758, 64 (same as the preceding); ib. 1766, 87 (almost wholly, but includes references to the 
Siberian animal).—ScuresBeEr, Siiuget. iv, 1791, 791 (in part; ‘ B. Das amerikanische” and its 
synonyms only).—ERXLEBEN, Syst. Reg. Anim. 1777, 426 (refers almost exclucively to the 
American “ Ground” Squirrel of the Eastern United States)—DrEsMareEsT, Mam. 1822, 339 
(in part)—Harian, Faun. Amer. 1825, 183 (in part).—GoODMAN, ii, 1826, 142.—Emmons, 
Quad. Mass, 1840, 68.—TuHomrson, Hist. Vermont, 1842, 46.—DrE Kay, New York Zc6l. i, 1842, 
62, pl. xvi, fig. 2. 
Myoxus striatus BoDvzRT, Elenchus Animal. i, 1784, 122. 
Sciurus striatus, 3 americanus GMELIN, Syst. Nat. i, 1788, 150.—FiscHer, Synop. Mam. 1829, 348. 
Tamias americana KuuL, Beitriige zur Zoologie, 1820, 69—Gray, Ann. and Mag. Nat. Hist. 3d ser. xx, 
1867, 436 (= T. striatus Baird). 
Sciurus americanus FiscuEr, Synop. 1829, 349 (= T. americana Kuhl). 
Tamias striatus BatrD, 11th Ann. Rep. Smiths. Inst. 1857, 55, foot-note ; Mam. N. Amer. 1857, 292, pl. xlvi, 
fig. 2.—KEnnicort, Rep. U. S. Pat. Off. Agric. for 1856 (1857), 70, pl. vili—THomas, Trans 
lll. State Agr. Soc. iv, 1860, 657.—GrILPINn, Trans. Nova Scotia Inst. Nat. Sci. ii, pt. 3,.1870, 15 
(Nova Scotia).—ALLEn, Bull. Mus. Comp. ZoGl. i, 1869, 225; Proc. Bost. Soc. Nat. Hist. xvi, 
1874, 189. 
