256 U. S. NATIONAL MUSEUM BULLETIN 205 



Nat., vol. 2, p. 10, Feb. 20, 1941) , Rio Ramos, Nuevo Leon (Davis, Journ. Mamm., 

 vol. 25, No. 4, p. 385, Dec. 12, 1944), and Pendencia, San Luis Potosi (Dalquest, 

 Occ. Pap. Mus. Zool. Louisiana State Univ. No. 23, p. 5, July 10, 1950). 



Sciurus nayaritensis J. A. Allen* 



1889. Sciurus alstoni J. A. Allen, Bull. Amer. Mus. Nat. Hist., vol. 2, p. 167, 

 Oct. 21, 1889. (Not of Anderson, 1878.) 



1890. [Sciurus] nayaritensis J. A. Allen, Bull. Amer. Mus. Nat. Hist., vol. 2, 

 p. VII (footnote), February 1890. (Substitute for alstoni Allen.) 



Type Locality. — Sierra de Valparaiso, Zacatecas, Mexico. Range. — Pine and 

 oak forests of Transition Zone in Sierra Madre and outlying spurs of western 

 Zacatecas, southern Durango, eastern Nayarit and southern Jalisco, Mexico. 

 Vertical range, 6,500 to 9,000 feet. 



Sciurus oculatus oculatus Peters* 



1863. Sciurus oculatus Peters, Monatsb. Preuss. Akad. Wiss. Berlin, 1863, 



p. 653. 

 1890. Sciurus niger melanonotus Thomas, Proc. Zool. Soc. London, 1889, 



pt. 1, p. 73, June 1890. (Las Vigas, Veracruz, Mexico.) 

 1898. Sciurus oculatus Nelson, Proc. Biol. Soc. Washington, vol. 12, p. 149, 



June 3, 1898. 

 Type Locality. — Mexico, probably near Las Vigas, Veracruz. Range. — Pine 

 and oak forests of Transition and Boreal Zones in northern Puebla, western 

 Veracruz (Cofre de Perote, Mount Orizaba), Hidalgo, and eastern Queretaro, 

 Mexico. Vertical range, 6,000 to 12,000 feet. 



Sciurus oculatus tolucae Nelsonf* 



1898. Sciurus oculatus tolucae Nelson, Proc. Biol. Soc. Washington, vol. 12, 

 p. 148, June 3, 1898. 



Type Locality. — North slope of Volcan de Toluca, State of Mexico, Mexico. 

 Range. — Pine and oak forests of Transition and Boreal Zones on tableland slope 

 of Sierra Madre in State of Mexico, from Volcan de Toluca north to border of 

 Michoacan ; also arid mountains of southern and western Queretaro, central and 

 eastern Guanajuato, and southern San Luis Potosi, Mexico. Vertical range, 

 7,500 to 12,000 feet. 



Sciurus oculatus shawi Dalquest* 



1950. Sciurus oculatus shaivi Dalquest, Occ. Pap. Mus. Zool. Louisiana State 

 Univ. No. 23, p. 4, July 10, 1950. 



Type Locality. — Rancho San Francisco, 38 kilometers east-southeast of city 

 of San Luis Potosi, San Luis Potosi, Mexico. Range. — Mountain forests of 

 southern and central parts of State of San Luis Potosi. 



Subgenus GUERLINGUETUS » Gray 



1821. Guerlinguetus Gray, London Med. Repos., vol. 15, p. 304, April 1821. 



(Type, Sciurus guerlinguetus Gray = Sciurus aestuans Linnaeus.) 

 1915. Mesosciurus J. A. Allen, Bull. Amer. Mus. Nat. Hist., vol. 34, p. 212. 



May 17, 1915. (Type, Sciurus aestuans hoffmanni Peters.) 



M Revised by Nelson under the name Guerlinguetus, Proc. Washington Acad. Sci., vol. 1, 

 pp. 98-101, May 9, 1899. 



