2() PROCEEDINGS : BOSTON SOCIETY NATURAL HISTORY. 
Belarus aureogaster frumentor Nelson. 
1898. Sciiirus aureogaster fi'umentor Nelson, Proc. bioL- 
soc. Washington, xii, p. 154. June 3, 1898. 
Type locality. —Las Vigas, State of Vera Cruz, Mexico. 
Sciurus poliopus (Fitzinger). 
1867. ^Sciurus variegatus'] poliopus Fitzinger, Sitzungsber. 
k. Akad. Wissensch. Wien, math.-naturw. C1.,lv, i Abth., p.' 
478. March, 1867. 
1899. Sciurus poliopus Nelson, Proc. Washington acad. 
sci., I, p. 46. May 9, 1899. 
G^ype locality. — Cerro San Felipe, State of Oaxaca, Mexico. 
Belarus poliopus hernandezl (Nelson). 
1898. \Sciurus alhip)es'\ liernandezi Nelson, Science, n. s., viii, 
p. 783. December 2, 1898. 
1899. Sciurus poliopus hernandezi Nelson, Proc. Washington 
acad. sci., i, p. 48. May 9, 1899. 
Type locality. —Mountains 15 miles west of the city of 
Oaxaca, State of Oaxaca, Mexico. 
Belarus poliopus nemoralls (Nelson). 
1898. Sciurus albipes neinoralis Nelson, Proc. biol. soc. 
Washington, xii, p. 151. June 3, 1898. 
1899. Sciurus poliopus nemoredis Nelson, Proc. Washington 
acad. sci., i, p. 50. May 9, 1899. 
Type locality". — Patzeuaro, State of Michoacan, Mexico. 
Belarus poliopus oervlealls (Allen). 
1890. Sciurus cervicalis Allen, Bull. Amer. mus. nat. hist., iii,. 
p. 183. December 10, 1890. 
1899. Sciurus poliopus cervicalis Nelson, Proc. Washington 
acad. sci., i, p. 51. May 9,1899. 
Ty"pe locality. — Hacienda San Marcos, Tonila, State of 
Jalisco, Mexico. 
Belarus poliopus eollmensls (Nelson). 
1898. Sciurus albipes colimensis Nelson, Proc. biol. soc. 
Washington, xii, p. 152. June 3, 1898. 
1899. Sciurus poliopus colimensis Nelson, Proc. Washington 
acad. sci., i, p. 52. May 9, 1899. 
Type locality. — Hacienda Magdalena, State of Colima,. 
Mexico. 
