THOMOMYS. 335 
Genl. Char. Size medium; tail half as long as body and head; 
claws large, long. 
Color. Above reddish brown, darkest on dorsal region; sides 
and under parts yellowish white, tinged with rufous on abdomen: 
lips and ears dusky; inside of pouches whitish; tail with basal part 
like back. 
Measurements. Total length, 239; tail vertebra, 79; hind foot, 
29; ear, 8. Skull: basal length, 37; Hensel, 35; zygomatic width, 
25; interorbital breadth, 7; length of upper molar series, 8; length 
of mandible, 25. 
a.—anite (Thomomys), Allen, Bull. Amer. Mus. Nat. Hist., 1898, 
D146. 
SANTA ANITA POCKET GOPHER. 
Type locality. Santa Anita, Lower California, Mexico. 
Geogr. Distr. Cape Region, Lower California, Mexico. 
Genl. Char. Similar to T. fulvus; nasals gradually broaden postero- 
anteriorly. 
Color. Above yellowish brown, darkest on median line; under 
parts buff; about mouth, cheek pouches and ears blackish. 
Measurements. Total length, 250; tail vertebre, 62; hind foot, 
35; ear, 8.5. Skull: total length, 42; basal length, 38.7; zygomatic 
width, 26.5; mastoid width, 21; interorbital constriction, 8; length 
of nasals, 14.6; width of nasals posteriorly, 2.5. 
b.—alticola (Thomomys), Allen, Bull. Am. Mus. Nat. Hist., 1899, 
p. 0s 
SIERRA LaGuNA PocKET GOPHER. 
Type locality. Sierra Laguna, Lower California, Mexico. Altitude, 
7,000 feet. ; 
Geogr. Distr. High altitudes in the Sierra Laguna, Lower Cali- 
fornia, Mexico. 
Genl. Char. Similar to T. f. antie, but darker. Skull similar 
in size and characters. 
Color. Above yellowish brown and black, darkest on dorsal 
region; nose and edges of cheek pouches blackish; spot at base of 
ear dusky; under parts reddish fulvous; inside of cheek pouches and 
anal region white; tail and feet whitish. 
Measurements. Total length, 225; tail, 61; hind foot, 30. 
e.—nisricans (Thomomys), Rhoads, Proc. Acad. Nat. Scien. Phil., 
DSOS, Pp. 30. 
BLAcKISH PocKET GOPHER. 
Type locality. Witch Creek, San Diego County, California. 
