120 SCIURUS. 
albtpes colimensts Nels., Proc. Biol. Soc. Wash., x11, 1898, p. 152. 
wagnert colimensts Allen, Bull. Am. Mus. Nat. Hist., 1898, p. 454. 
CoLIMA SQUIRREL. ; 
Type locality. Hacienda Magdalena, State of Colima, Mexico. 
Geogr. Distr. Coast region, State of Colima, Mexico. 
Color. Back grizzled gray; nose and forehead grizzled iron gray; 
nape and patch on rump yellowish brown to rusty, tinged with black; 
sides of head grizzled gray; orbital ring buff; outside of arms, legs, 
and hands iron gray; feet blackish, mixed with gray; ears yellowish 
brown or rusty, with a whitish patch at base; under parts white; 
tail at base same as back, remainder black washed with white, 
beneath grizzled iron gray, bordered with black and edged with 
white. 
Measurements. Total length, 500; tail vertebre, 258; hind foot, 
68. Skull: average of five; basal length, 50.2; palatal length, 26.7; 
interorbital width, 19.1; zygomatic width, 38.8; length of molar 
serieS, 11.2. 
effwsiws (Scturus), Nelson, Proc. Wash. Acad. Scien., 1, 1899, p. 54: 
albipes effugius Nels., Proc. Biol. Soc. Wash., x11, 1898, p. 152. 
wagnert effugius Allen, Bull. Am. Mus. Nat. Hist., N. Y., 1898, 
Pp. 454. 
GUERRERO SQUIRREL. 
Type locality. Mountains west of Chilpancingo, State of Guerrero, 
e. 
Mexico. 
Geogr. Distr. Forests of Cordillera, State of Guerrero, Mexico. 
Altitude, 7,500—9,500 feet. 
Genl. Char. Similar to S. poliopus, but under parts darker. 
Color. Above grizzled iron gray, mixed with rusty; nape and 
indistinct patch on rump rusty rufous, the latter sometimes mixed 
with black and white; sides of head, base of ears, and around eyes 
pale rufous; orbital ring whitish; ears reddish brown, with white 
patches at bases; chin and throat white; outside of arms and legs gray; 
hands and feet white, sometimes washed with rufous; under parts 
dark rufous; tail at base same as rump, remainder above black 
washed with white, beneath dark rufous with black border and 
white edge. 
Measurements. Total length, 498; tail vertebra, 249; hind foot, 
68. Skull: average of four; basal length, 50.9; palatal length, 26.9; 
interorbital width, 19.1; zygomatic width, 34.5; length of upper 
molar series, IT. 
82. nelsoni (Sciurus), Merr., Proc. Biol. Soc. Wash., vitr, 1893, 
OR 
