220 BULLETIN 128, UNITED STATES NATIONAL MUSEUM. 



t*Sciunis 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 (GrajO- 



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 griseoflavus chiapensis Nelson, Proc. Washington 



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

 Type Locality. — San Cristobal, Chiapas, Mexico. 

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



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



t*Sciurus yucatanensis yucatanensis (Allen). 



1877. [Sciurus carolinensis] var. yucatanensis Allen, Monogr. 



N. Amer. Rodentia, p. 705. August, 1877. 

 1885. Sciurus carolinensis yucatanensis True, Proc. U. S. Nat. 



Mus., vol. 7 (1884), p. 595. 1885. 

 1897. Sciurus yucatanensis Allen, Bull. Amer. Mus. Nat. Hist., 



vol. 9, p. 5. February 23, 1897. 

 Type Locality. — Merida, Yucatan, Mexico. 

 Range. — Arid tropical forests of peninsula of Yucatan. 



t*Sciurus yucatanensis baliolus Nelson. 



1901. Sciurus yucatanensis haliolus Nelson, Proc. Biol. Soc. 



Washington, vol. 14, p. 131. August 9, 1901. 

 Type Locality. — ^Apazote, Campeche, Mexico. 



t*Sciurus thomasi Nelson. 



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



vol. 1, p. 71. May 9, 1899. 

 Type Locality. — Talamanca, Costa Rica. 

 Range.— Humid tropical forests of eastern Costa Rica. 



