42 NELSON 



taro, and near Encarnacion, Hidalgo, Mr. Goldman took specimens 

 at an altitude of over Sooo feet. The northern part of its range is an 

 arid tropical region where it occurs mainly in heavy woods along 

 streams and canyons. Farther south, on the borders of the humid 

 tropical region, it finds suitable forests more generally distributed ; and 

 on the mountain slopes it is usually found in areas of heavy tree growth. 



Throughout their range these squirrels do considerable damage to 

 cornfields, and while corn is in the ear it is an easy matter to find 

 them about the edges of fields cleared in the forest. At other times 

 they are dispersed, seeking food wherever wild fruits or nuts may be 

 in season. Their occurrence at an altitude of Sooo feet in Hidalgo 

 and Queretaro is probably due to a migration in search of food, for 

 this is far above their usual I'ange. 



Speci7nens exami7icd. — Ninety-eight, from the following localities : 

 Victoria, Forlon and Alta Mira, Tamaulipas ; Valles, San Luis 

 Potosi ; Pinal de Amoles, Qiieretaro (8000 feet) ; Metlaltoyuca, 

 Puebla ; Sierra Encarnacion, Hidalgo (8000 feet) ; Papantla, 

 Chichicaxtle, Jalapa, Jico, Mirador, Orizaba, Motzorongo, Otatitlan, 

 Tuxtla, and Catemaco, Vera Cruz ; Serabia, Guichicovi, and 

 mountains near Santo Domingo, Oaxaca. 



SCIURUS AUREOGASTER HYPOPYRRHUS (Wagler). 

 Fire-bellied Squirrel. 



Sciurus hypopyrrhus Wagler, Oken's Isis, pp. 510-51 1, 1831 ; Wagner, 

 Schreber's Saugth., 11, Suppl. pi. ccxiii c, 1837; Ibid., Suppl., iii, pp. 

 167-168, 1843 ; Saussure, Revue et Mag. deZooL, p. 5, 1861 ; Allen, 

 Mon. N. Am. Rodentia, pp. 746-750, 1877 (part) ; Alston, Proc. Zool, 

 Soc. London, pp. 662-664, 1878 (part) ; Biol. Cent. -Am. Mammalia, pp. 

 1 28-131, 1880 (part : specimens from Coatzacoalcos, Vera Cruz). 



Sciurus hyPopyrrhous Gray, Ann. & Mag. Nat. Hist., 3d ser., xx, p. 424, 

 1867. 



Macroxus morio Gray, Ann. & Mag. Nat. Hist., 3d ser., xx, p. 424, 1867. 



Macroxtis maurus Gray, Ann. & Mag. Nat. Hist., 3d ser., .xx, p. 425, 1867. 



Sciurus variegatics '^MiAiCYi.v.KST, La Naturaleza, v, p. 324, 1882 (part: speci- 

 mens from southern Vera Cruz, Mexico). 



Sciurus rufiventris} RoviROSA, La Naturaleza, vii, p. 360 (1885-86) 1887 

 (Tabasco, Mexico). 



Sciurus aureogastcr Allen, Bull. Am. Mus. Nat. Hist., iii, pp. 1 81-182, 

 1890 (part : specimens from Serabia, Oaxaca). 



Type locality. — ' Mexico.' Specimens from Minatitlan, Vera Cruz, 

 are typical. Location of type specimen unknown — but probably in 

 Berlin Museum. 



Distribution. — Humid tropical forests of southern Vera Cruz, ad 



