146 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Type locality. — San Francisco Mountain, Coconino County, 
Arizona. 
Thomomys fulvus alticola Allen. 
1899. Thonnomys fidmis alticolus Allen, Bull. Amer. mus. 
nat. hist., xii, p. 13. April 4, 1899. 
Type locality.— Sierra Laguna, Lower California, Mexico. 
Altitude, 7000 feet. 
Thomomys fulvus anitae Allen. 
1898. Thomomys fidmis anitae Allen, Bull. Amer. mus. nat. 
hist., X, p. 146. Ajiril 12, 1898. 
Type locality.— Santa Anita, Lower California, Mexico. 
Thomomys fulvus intermedius Mearns. 
1897. Thomomys fulvus intermedius Mearns, Proc. U. S. 
nat. mus., xix, ji. 719. July 30, 1897. 
Type locality. — Summit of Huachuca Mountains, southern 
Arizona. Altitude, 9000 feet. 
Thomomys fulvus martirensis Allen. 
1898. Thomomys fidmis martirensis Allen, Bull. Amer. mus. 
nat. hist., x, p. 147. April 12, 1898, 
Type locality. — San Pedro Martir Mountains, Lower Cali¬ 
fornia, Mexico. Altitude, 8200 feet. 
Thomomys fulvus nigricans Rhoads. 
' 1895. Thomomys fidmis nigricans Rhoads, Proc. acad. nat. 
sci. Phila., p. 36. February 21, 1895. 
Type locality. —Witch Creek, San Diego County, California. 
Thomomys laticeps Baird. 
1855. Thomomys laticeps Baird, Proc. acad. nat. sci. Phila., 
VII, p. 335. April, 1855. 
1893. Thomomys laticeps Allen, Bull. Amer. mus. nat. hist., 
V, p. 63. April 28, 1893. 
Type locality. —Humboldt Bay, Humboldt County, Cali¬ 
fornia. 
Thomomys mazama Merriam. 
1897. Thomomys mazama Merriam, Proc. biol. soc. Wash¬ 
ington, XI, p. 214. July 15, 1897. 
Type locality. — Crater Lake, Mount Mazama, Klamath 
County, Oregon. Altitude, 6000 feet. 
