876 MONOGRAPHS OF NORTH AMERICAN RODENTIA. 
quent intervals from Minnesota westward to the Rocky Mountains and south- 
ward to Missouri and Western Texas. As shown by the subjoined lists of 
specimens, it has been taken at Eagle Pass (Texas), Fort Garland (Southern 
Colorado), Southwestern Wyoming, and Fort Bridger, Utah. - Woodhouse 
also met with it on the prairies of the Cherokee Nation. It is abundant 
throughout the prairie region east of the Mississippi, from Minnesota and 
Wisconsin eastward to Northern Ohio. Kennicott states that its range in 
Illinois does not extend southward beyond latitude 39°. : 
TaBLE CXVIII.—Measurements of six skulls of Sp. TRIDECEMLINEATUS var. TRIDECEMLINEATUS, 
. Ss . i=] 
org |S 5 =Sa Aig 
a As! 6 |&8 as .|'3 
= a3 le £4) = lai= 
2 d 3 2 |e a 2|/ a |2a/4 
i i) a =| 8 a i = 
iB sro aes) lt Gel lS 6S] 6 | Fela a | $ 
oO =| &o p=) Z a = a —-a/190 > a=) 
2 f : 3 8 = = | = A ~ |e Slo tp SO 
q Locality. 3 e |< a Lei iet 2! 2 Ele a ‘o 
I s/2)/3] a] e] 8/2 |28) 8 |2e\8 Se | nite 
} be Espen S s a le .|88| 6 |/S8lsz] & E 
5 ele/e]2|8 1/28 |#¢lfs| 8 |2#el/#31 4 | 4 
5 aleisleilaelselsslszl &ie2is8] s | s 
= ae s | 2 s 3 Ae = feratese | sta Seep ts E 
£ Kl q 2 a a ai/ehjaa| alJaciasi & 6 
S) a] a Lo} =) a 4/)4 |b |b Pip |b A Hh 
1264 ---| 1.57 | 0.90 | 0.30 | 0.50 | 0.19 | 0.26 | 0.49 | 0.79 | 0.25 | 0 17 | 0.29 | 0.92 | 0.37 
13277 © | 1.75 | 1.00 | 0.35 | 0,60 |......|...... CS je ROS Tt ssa feesaca 0.32 | 1.00 | 0.37 
13278 od | 1.€0 | 0.98 | 0.33 | 0.60 | 0.19 }...... Oe BN) eaea sl es sacl focecicc 0.32 | 0.90))..... . 
13275 Oa Gt ace = OF30) i 0s1005|-2-s2 5] -ee cn 0.52 | 0.87 |.....-]...... 0.31 | 0.91 | 0.42 
13276 of | 1.72] 1.10 | 0.35 | 0.56 | 0.20 |.....- (EPS AE ING ace escc 0, 32 | 1.00 | 0. 43 
13279 o | 1.83] 1.12 | 0.37 | 0.60 | 0.22 | 0.28 | 0.60 | 0.94 | 0.25 | 0.19 | 0.32 | 1.02 | 0.45 
Table CXIX.—Mecasurements of two skulls of SPERMOPHILUS TRIDECEMLINEATUS var. PALLIDUS. 
3 ° ° } 5 
bo) asinaligs’ > < I 3 
o a>] B =] as .|3 
= a|s |e eed ee es hacats = 
a ge a ic Ss] a 1S mo] a 
Br liegp SS) Gee af) @ lee] ; 
K GS ve} e=| a | Sale ca at) a + 
5 | Eo = aa elses Fes i) =/8 ee} a 
2 ‘ 5 nal ean | eustiet| (eete mde tone ees a 1e3/4 be | ie 
5 Locality. 2/e)/S |F)8 le |edite |S ele |-8 18 
5 aS |e cel al am [iS [Steal cealereai iss et |) c= 
S26 |B los4.3 | 2s. (2S Seas: sae 
a bo 2 g = als .1op)] 8 fe ols e 
5 a + o ° 6 © |saa/a a jr 84/5 oh 
Ep 2 2 ° 2 2 2 OR [on & - a a 
3 ais slalaf)s |Ssl|8s| 8 1B 2/8e)] & 5 
s S 5 + & a @lagi/aag| a |aeElag| - E 
4 5 & 2 3 Ci s |e ales] a laslas! 6 6 
Sek Ri/ol|A|AlaAl]4 pb jeb"|b ib IP }AfaA 
3310 | West of Laramie, Wyo. Ter-..... 1. 43 | 0.85 | 0.28 | 0.58 | 0.12 | 0.24 | 0.45 | 0.78 | 0.22 | 0.16 | 0.26 |......}....-- 
6591 | Snatch Creek ...... 22.2 .c.cceeee 1.68 | 1.02 | 0.35 | 0.60 | 0.20 | 0.28 | 0.60 | 0.93 | 0.26 | 0.20 | 0.30 | 0.95 | 0,45 
