102 SCIURUS. 
Geogr. Distr. State of Vera Cruz from Papantla on east coast to 
Isthmus of Tehuantepec, Mexico, and into Guatemala, Central 
America. Altitude, 6,000-9,000 feet. 
Color. Above grizzled rusty or yellowish brown; flanks and 
sides of head paler yellowish brown; ears like back, with whitish 
basal patches; outside of arms and hands dark gray; legs and feet 
similar to flanks in color, but darker; under parts grayish white to 
rusty fulvous; tail above black, washed with white, beneath grizzled 
reddish or yellowish brown, bordered with black and edged with 
white. 
Measurements. Total length, 392; tail vertebrae, 188; hind foot, 
54. Skull: occipito-nasal length, 56; Hensel, 47; zygomatic width, 
33; across postorbital processes, 27; length of nasals, 15; palatal 
length, 27; length of upper tooth row, 11; length of lower tooth row, 9g. 
a.—vivax (Sciurus), Nelson, Proc. Biol. Soc. Wash., XIv, 1901, p. 131. 
APAZOTE SQUIRREL. 
Type locality. Apazote, State of Campeche, Mexico. 
Geogr. Distr. Lowland forest in the States of eastern Tabasco, 
southern Campeche, and southern and eastern Yucatan, Mexico. 
Genl. Char. Similar to S. deppi, but paler; rostrum heavy; 
nasals broader; audital bullae smaller and more nearly round. 
Color. Above rusty reddish; under parts white or grayish white; 
shoulders, arms, and hands gray; feet like back but washed with gray; 
tail above heavily washed with white. 
Measurements. Total length, 373; tail vertebre, 168; hind 
fOObs G2. 
72. negligens (Sciurus), Nelson, Proc. Biol. Soc. Wash., x11, 1898, 
DLewAye 
artzonensis Alston, Biol. Cent. Amer., Mamm., 1, 1880, p. 125. 
depper Allen, Bull. Am. Mus. Nat. Hist., 1891, p. 222. (Part.) 
LITTLE GRAY SQUIRREL. 
Type locality. Alta Mira, State of Tamaulipas, Mexico. 
Geogr. Distr. Southern Tamaulipas, through eastern San Luis 
Potosi into northern Vera Cruz, Mexico. 
Genl. Char. Similar to S. deppii, but paler. 
Color. Upper parts grizzled grayish brown, tinged with yellow 
or reddish; sides of neck, nape, and head yellowish brown; ears fer- 
rugineous with basal white patches; shoulders outside of arms and 
hands gray; outside of legs and feet grizzled grayish brown; under 
parts white, varying to fulvous; chin and throat’ white; tail above 
black, washed with white, beneath grizzled grayish, or yellowish 
brown, bordered with black and edged with white. 
