NORTH AMERICAN LAND MAMMALS. 329 



t*Sciurus truei Nelson. 



1899. Sciurus truei Nelson, Proc. Washington Acad. Sci., vol. 1, 

 p. 61. May 9, 1899. 



Type Locality. — Camoa, Rio Mayo, State of Sonora, Mexico. 



Range. — Scrubb}- forests of arid lower Sonoran zone in south- 

 western Sonora and northern Sinaloa, Mexico. 



*Sciurus socialis socialis Wagner. 



1837. Sciurus socialis Wagner, Abhandl. math.-phys. CI. k. 

 bayerisch. Akad. Wiss. Miinchen, vol. 2, p. 504. 



1899. Sciurus socialis Nelson, Proc. Washington Acad. Sci., 

 vol. 1, p. 62. May 9, 1899. 



Type Locality. — Vicinity of Tehuantepec City, State of 

 Oaxaca, Mexico. 



Range. — Arid tropical lowland forests along the Pacific coast 

 from Puerto Angel, Oaxaca, south to Tonala and Tuxtla, 

 Chiapas, Mexico, and up the river valley to Nenton, Guate- 

 mala, below 3,000 feet. 



t*Sciurus socialis cocos Nelson. 



1898. Sciurus socialis cocos Nelson, Proc. Biol. Soc. Washing- 

 ton, vol. 12, p. 155. June 3, 1898. 



Type Locality. — Acapulco, State of Guerrero, Mexico. 



Range. — Arid tropical lowlands of the Pacific coast from Aca- 

 pulco, Guerrero, south to Jamiltepec, Oaxaca, below 1,500 feet. 



t*Sciurus socialis littoralis Nelson. 



1907. Sciurus socialis littoralis Nelson, Proc. Biol. Soc. Wash- 

 ington, vol. 20, p. 87. December 11, 1907. 

 Type Locality. — Puerto Angel, Oaxaca, Mexico. 



*Sciurus griseoflavus griseoflavus (Gray). 



1867. Macroxus griseoflavus Gray, Ann. and Mag. Nat. Hist., ser. 



3, vol. 20, p. 427. December, 1867. 

 1878. Sciurus griseoflavus Alston, Proc. Zool. Soc. London, p. 



660. 

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



(1884), p. 595. 1885. 

 Type Locality. — Guatemala. 

 Range. — Oak and pine forests of the transition and boreal zones 



in central and northwestern Guatemala and adjacent high 



mountains in southeastern Chiapas, Mexico. 



t*Sciurus griseoflavus chiapensis Nelson. 



• 1899. Sciurus griesoflavus chiapensis Nelson, Proc. Washington 

 Acad. Sci., vol. 1, p. 69. May 9, 1899. 

 Ty^e Locality. — San Cristobal, State of Chiapas, Mexico. 

 Range. — Pine and oak forests of transition and boreal zones in 

 mountains of central Chiapas. Altitude, 7,500 to 9,500 feet. 



