244 U. S. NATIONAL MUSEUM BULLETIN 205 



Type Locality. — San Bias, Nayarit, Mexico. Range. — Arid tropical lowlands 

 and lower slopes of adjacent mountains from northern border of Nayarit 

 south to Bay of Banderas, below 2,500 feet. 



Sciurus colliaei nuchalis Nelsonf* 



1899. Sciurus colliaei nuchalis Nelson, Proc. Washington Acad. Sci., vol. 1, 

 p. 59, May 9, 1899. 



Type Locality. — Manzanillo, Colima, Mexico. Range. — Arid tropical low- 

 lands from border of Michoacan north along coast to Bay of Banderas, Jalisco, 

 and inland to more heavily wooded mountains near San Sebastian, Jalisco, below 

 3,000 feet. 



Sciurus truei Nelsonf* 



1899. Sciurus truei Nelson, Proc. Washington Acad. Sci., vol. 1, p. 61, May 9, 

 1899. 



Type Locality. — Camoa, Rio Mayo, Sonora, Mexico. Range. — Oak forests 

 of arid Lower Sonoran Zone in southern Sonora as far north as San Javier (Burt, 

 Univ. Michigan Mus. Zool. Misc. Publ. 39, p. 38, Feb. 15, 1938) and northern 

 Sinaloa, Mexico. 



Sciurus sinaloensis Nelson* 



1899. Sciurus sinaloensis Nelson, Proc. Washington Acad. Sci., vol. 1, p. 60, 

 May 9, 1899. 



Type Locality. — Mazatlan, Sinaloa, Mexico. Range. — Arid Tropical Zone in 

 southern and central Sinaloa, below 2,500 feet. 



Sciurus nelsoni nelsoni Merriamf * 



1893. Sciurus nelsoni Merriam, Proc. Biol. Soc. Washington, vol. 8, p. 144, 

 Dec. 29, 1893. 



Type Locality. — Huitzilac, Morelos, Mexico. Range. — Oak and pine forests 

 of Transition and Boreal Zones in mountains on south and west sides of Valley 

 of Mexico, and south side of Valley of Toluca, in Distrito Federal and States 

 of Mexico and Morelos. Vertical range, 8,000 to 12,000 feet. 



Sciurus nelsoni hirtus Nelsonf* 



1898. Sciurus nelsoni hirtus Nelson, Proc. Biol. Soc. Washington, vol. 12, 

 p. 153, June 3,] 898. 



Type Locality. — Tochimilco, Puebla, Mexico. Range. — Oak and pine forests 

 of Transition and Boreal Zones on Mounts Popocatepetl and Iztaccihuatl, in 

 States of Mexico, Puebla, and Morelos. Vertical range, 8,000 to 12,000 feet. 



Sciurus socialis socialis Wagner* 



1837. Sciurus socialis Wagner, Abhandl. Bayerisch. Akad. Wiss., Munchen, 

 math.-phys. CI. 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, Oaxaca, Mexico. Range. — 

 Arid Tropical Zone lowland forests along Pacific coast from Puerto Angel, 

 Oaxaca, south to Tonala and Tuxtla, Chiapas, Mexico, and up river valley to 

 Nenton, Guatemala, below 3,000 feet. 



