NOETH AMERlCAlir LAND MAMMALS. 325 



t*Sciurus negligens Nelson. 



1898. Sciurus negligens Nelson, Proc. Biol. Soc. Washington, 

 vol. 12, p. 147. June 3, 1898. 



Type Locality. — Alta Mira, State of Tamaulipas, Mexico. 

 Range. — Arid tropical forest of lowlands in extreme northern 



Vera Cruz, eastern San Luis Potosi, and southern half of 



Tamaulipas, Mexico, below 1,000 feet. 



Subgenus Sciurus Linnaeus.* 



1880. Echinosciurus Trouessart, Le naturahste, vol. 2, p. 292. 



October, 1880. Type, Sciurus hypo'pyrrhus Wagler. 

 1880. Neosciurus Trouessart, Le naturahste, vol. 2, p. 292. 



October, 1880. Type, Sciurus carolinensis Gmelin. 



1899. Hesperosciurus Nelson, Proc. Washington Acad. Sci., 

 vol. 1, p. 27. May 9, 1899. Type, Sciurus griseus Ord. 



1899. Otosciurus Nelson, Proc. Washington Acad. Sci., vol. 1, 

 p. 28. May 9, 1899. Type, Sciurus aberti Woodhouse. 



*Sciunis aureogaster aureogaster F. Cuvier. 



1829. [SciuruSj by implication! aureogaster F. Cuvier, Hist, 

 nat. mammiferes, vol. 6, livr. 59, pi. with text. September, 

 1829. (Binomial pubhshed at end of work only, vol. 7, table 

 generale et m6thodique, p. 4, 1842.) 



1885. Sciurus aureogaster True, Proc. U. S. Nat. Mus., vol. 7 

 (1884), p. 595. 1885. (Part.) 



Type Locality. — "Cahfornia" — really eastern Mexico. (See 

 Nelson, Proc. Washington Acad. Sci., vol. 1, p. 38, May 9, 

 1899.) 



Range. — ^Arid tropical lowlands and adjacent mountains of 

 southern Tamaulipas, northern Vera Cruz, eastern San Luis 

 Potosi, eastern Queretaro and Puebla, northeastern Hidalgo, 

 and thence south to border of humid tropical zone in central 

 Vera Cruz, and northern side of Isthmus of Tehuantepec in 

 Oaxaca. Usually below 4,000 feet altitude, but sporadically 

 up to over 8,000 feet in Hidalgo and Queretaro. 



*Sciurus aureogaster hypopyrrhus (Wagler). 



1831. Sciurus TiypopyrrJius Wagler, Isis, p. 510. 



1885. Sciurus liypopyrrhus True, Proc. U. S. Nat. Mus., vol. 7 

 (1884), p. 595. 1885. (Part.) 



1899. Sciurus aureogaster TiypopyrrJius Nelson, Proc. Washing- 

 ton Acad. Sci., vol. 1, p. 42. May 9, 1899. 



Type Locality. — Mexico, probably in Vera Cruz. 



• Revised by Nelson, under the names EcMnosdurus, Hesperosciurus, and Otosciurus, Proc. Washing- 

 ton Acad. Sci., vol. 1, pp. 38-86, May 9, 1899. 



