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, 1 1 ; length of lower tooth row, 9. 



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 5. deppii, 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 vertebrae, 168; hind 

 foot, 52. 



72. negligens (Sciurus), Nelson, Proc. Biol. Soc. Wash., xn, 1898, 



P- 147- i 



arizonensis Alston, Biol. Cent. Amer., Mamm., i, 1880, p. 125. 



deppei 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 5. 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. 



