RODENTIA—SCIURINAE-SPERMOPHILUS TERETICAUDU9. 
315 
Spermophilus franklini, F. Cuvier, Suppl. Buffon, I, Mamm. 1831, 328. 
Wagner, Suppl. Schreb. Ill, 1843, 244 .—Ib. in Schreb. Saugt. IV, pi. ccx, A. (No text.) 
Aud. & Bach. N. Am. Quad. II, 1851, 248; pi. lxxxiv. 
Kennicott, Rep. Patent Office, 1856, Agriculture, (1857,) 79; pi. ix. 
g p _ q h _About the weight of the small gray squirrel, (Sciurus carolinensis.) Tail, with the hairs, rather more than half the 
head and body. Ear with a distinct auricle, but very small. Color above, light yellowish brown, varied with black; top and 
sides of head and sides of neck, pure hoary gray; beneath, whitish. Length, about 9 inches; tail, about 5| inches. Hind foot, 
2.10 inches. 
This species in its proportions is much like the S. ludovicianus. The tail is longer and more 
bushy, and the ears rather larger. The thumb nail is more developed than in the sciurine sper- 
mophiles, but shorter and smaller than in S. ludovicianus. The upper parts are of a light 
yellowish brown, variegated with black in obscurely sub-quadrate spots; the top and sides of 
the head and sides of neck are pure hoary gray ; the under parts soiled yellowish white. The 
tail shows a mixture of light brown, white and black ; its margin all round is grayish 
white, and the hairs generally are of this color, but with three bars of black, most distinct 
when viewed from beneath. The soles of the feet are densely furred to the tubercles in winter. 
List of specimens. 
Catalogue number. 
Corresponding number 
of skull. 
Sex and age. 
Locality. 
When 
collected. 
Whence obtained. 
Nature of speci- 
Measurements. 
Tip of nose to— 
Tail to end 
of— 
Length of— 
Skull— 
•ajfg 
Ear. 
o 
'HEX 
Verteb. 
Hairs. 
Fore ft. 
Hind it. 
Length. | 
1 
192 1 
Racine. Wis .. 
Dr. P. R. Hoy. 
Skin. 
9.00 
3.75 
4.85 
2.10 
.985 
o 
2494 
. 
Skin in alcohol. 
5.35 
6.50 
2495 
4.46 
5.50 
2496 
. 
5.20 
6.25 
2.17 
2497 
do. 
4.15 
1.03 
1.90 
1885 
9 
Skull. 
2.06 
1.20 
973 
West Northfield, Ill... 
August. 
R. Kennicott.. 
9.00 
4.75 
5.60 
2.10 
1403 
2238 
.do... _ T T 
Winter, 1855 
_ r ,,do. T _ T 
tt do .. 
4.40 
5.30 
2.10 
1.20 
2049 
3089 
$ 
.do.:: 
Winter. 
..do .. 
2.10 
2.12 
1233 
Quasqueton, Iowa.... 
May 7, 1854.. 
Dr. E. C. Bidwell... 
. .do. 
9.00 
2.10 
2493 
Wisconsin?. 
J. G. Bell. 
Skin in alcohol. 
.98 
1.70 
2.18 
8.58 
4.30 
5.20 
1.09 
1.80 
1 Longest fore claw, .42 inch ; of hinder claw .30 inch. 
SPEEMOPHILUS TEEETICAUDUS, Baird. 
Round Tailed Spermophile. 
Sp. Ch.—E ars nearly obsolete. Tail, with hairs, at least four-fifths as long as the head and body ; rounded, with the 
hairs close pressed all round; somewhat expanded at the tip. Feet very broad, the soles densely hairy, except on the 
sides. Color above, finely grizzled gray yellowish brown ; beneath, dirty white. No spots on the body, nor distinct an- 
nulations on the hairs of the tail. Length, five to six inches. Tail, half an inch to an inch less. Hind feet, 1.36 inches. 
This very curious small spermophile is in several respects very different from any other of the 
North American species, exnlbiting quite unusual combinations of characters. In size it is 
about equal to or, perhaps, a little larger than the common ground squirrel of the Atlantic 
