MILLER AND REHN: NORTH AMERICAN MAMMALS. 27 



Sciurus poliopus effugius (Nelson). 



1898. Sciurus albipes effugius NELSON, Proc. biol. soc. Wash- 

 ington, xn, p. 152. June 3, 1898. 



1899. Sciurus poliopus effugius NELSON, Proc. Washington 

 acad. sci., i, p. 54. May 9, 1899. 



TYPE LOCALITY. High mountains west of Chilpancingo, 

 State of Guerrero, Mexico. 



Sciurus nelsoni Men-lam. 



1893. Sciurus nelsoni MERRIAM, Proc. biol. soc. Washington, 



vin, p. 144. December 29, 1893. 

 TYPE LOCALITY. Huitzilac, State of Morelos, Mexico. 



Sciurus nelsoni hirtus Nelson. 



1898. Sciurus nelsoni hirtus NELSON, Proc. biol. soc. Wash- 

 ington, xn, p. 153. June 3, 1898. 



TYPE LOCALITY. Tochimilco, State of Puebla, Mexico. 



Sciurus colliaei Richardson. 



1839. Sciurus colliaei RICHARDSON, Voy. H. M. S. Blossom, 



zool., p. 8. 

 TYPE LOCALITY. San Bias, State of Tepic, Mexico. 



Sciurus colliaei nuchalis Nelson. 



1899. Sciurus colliaei nuchalis NELSON, Proc. Washington 

 acad. sci., i, p. 59. May 9, 1899. 



TYPE LOCALITY. Manzanillo, State of Colima, Mexico. 



Sciurus sinaloensis Nelson. 



1899. Sciurus sinaloensis NELSON, Proc. Washington acad. 



sci., i, p. 60. May 9, 1899. 

 TYPE LOCALITY. Mazatlan, State of Sinaloa, Mexico. 



Sciurus truei Nelson. 



1899. Sciurus truei NELSON, Proc. Washington acad. sci., 



i, p. 61. May 9, 1899. 

 TYPE LOCALITY. Camoa, Rio Mayo, State of Sonora, Mexico. 



Sciurus socialis Wagner. 



1837. Sciurus socialis WAGNER, Abhandl. math.-phys. Cl. 



k. bayerisch. Akad. Wiss. Miinchen, n, p. 504. 

 TYPE LOCALITY. Vicinity of Tehuantepec City, State of 



Oaxaca, Mexico. 



