NOBTH AMERICAN LAND MAMMALS. 325 



t*Sciurus negligens Nelson. 



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

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



Type Locality. — Alt a Mra, vState 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 Linnseus.* 



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



October, 1880. Type, Sciurus hypopyrrhus Wagler. 

 1880. Neosciurus Trouessart, Le naturaliste, 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. 



*Sciurus aureogaster aureogaster F. Cuvier. 



1829. [Sciurus, by impUcation] aureogaster F. Cuvier, Hist, 

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

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

 generale et m^thodique, 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 Querotaro 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. 



*Sciunis aureogaster hypopyrrhus (Wagler). 



1831. Sciurus ^lypojnjrrhus Wagler, Isis, p. 510. 



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

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



1899. Sciurus aureogaster hypopyrrhus 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 Echinosciurus, Hesperosciurus, and Otosciurus, Proc. Washing- 

 ton Acad. Sci., vol. 1, pp. 3S-86, May 9, 1899. 



