CITELLUS. 145 
fawn; under parts and inner sides of legs and hind feet white, the 
last washed with rufous; tail above at base like back, remainder 
fawn color bordered with black and fringed with whitish rufous, 
beneath pale rufous. 
Measurements. Total length, 220; tail vertebra, 65; hind foot, 
33. Skull: occipito-nasal length, 37.5; Hensel, 30; zygomatic width, 
24; interorbital width, 9; length of nasals, 6; palatal length, 18; 
length of upper tooth row, alveolar border, 7. 
107. perotensis (Spermophilus), Merr., Proc. Biol. Soc. Wash., v111, 
1603, p. 131. 
PEROTE SPERMOPHILE. 
Type locality. Perote, State of Vera Cruz, Mexico. 
Geogr. Distr. State of Vera Cruz, Mexico; extreme eastern border 
of tableland. Altitude 8,000—10,000 feet. 
Genl. Char. SimilartoC. elegans. Skull large, heavy; molars with 
broad crowns. 
Color. Above grizzled yellowish brown irregularly lined with 
black posteriorly; under parts, hands, and feet buffy; tail above 
mixed black and yellowish brown, beneath ochraceous buff with a 
subapical black band. 
Measurements. ‘Totallength, 253; tail vertebra, 68; hind foot, 38. 
108. spilosoma (Spermoplilus), Bennett, Proc. Zool. Soc., 1833, p. 
40. Elliot, Syn. N. Am. Mamm., rgor, p. 96. 
mexicanus, Aud. & Bachm., Quad. N. Am., 111, 1853, p. 42, pl. 
Bix, 
SPOTTED SPERMOPHILE. 
Type locality. ‘“‘That part of California that adjoins Mexico.”’ 
Western Texas? 
Geogr. Distr. Janos, State of Sonora, Mexico, north into Texas 
and New Mexico. Altitude, 5,600 feet. 
Genl. Char. Size small; ears very short; tail about half the length 
of body. 
Color. Above reddish brown spotted with white (bordered with 
black posteriorly in the young); under parts yellowish white; tail 
above like back, with subterminal black bar, tip yellowish brown, 
beneath brownish yellow, bordered with black and fringed with 
yellowish. 
Measurements. Total length, 255; tail vertebre, 75; hind foot, 
32. 
0 TS. (Spermopmilus), Merr., N. Am. Faun., No. 4, 
1890, p. 38. Elliot, Syn. N. Am. Mamm., rgor, p. 96. 
