1909. _Sylvilagus bachmani cerrosensis_, Nelson, N. Amer. Fauna, 29:255, August 31. SYLVILAGUS BACHMANI CINERASCENS (J. A. Allen). 1890. _Lepus cinerascens_ J. A. Allen, Bull. Amer. Mus. Nat. Hist., 3:159, October 8, type from San Fernando, Los Angeles County, California. 1907. _Sylvilagus bachmani cinerascens_, Nelson, Proc. Biol. Soc. Washington, 20:84, July 22. _Marginal records._--California (Orr, 1940:168): 5700 ft., San Emigdio Canyon; 3 mi. E San Fernando; Reche Canyon (Orr, 1940:169); 3500 ft., Dos Palmas Springs, Santa Rosa Mts. Baja California (Nelson, 1909:253): La Huerta, thence northward up-coast to point of beginning. SYLVILAGUS BACHMANI EXIGUUS Nelson. 1907. _Sylvilagus bachmani exiguus_ Nelson, Proc. Biol. Soc. Washington, 20:84, July 22, type from Yubay, central Baja California. _Marginal records._--Baja California (Nelson, 1909:254): Agua Dulce; Santana. SYLVILAGUS BACHMANI HOWELLI Huey. 1927. _Sylvilagus bachmani howelli_ Huey, Trans. San Diego Soc. Nat. Hist., 5:67, July 6, type from 10 mi. SE Alamo, Baja California, lat. 31° 35´ N, long. 116° 03´ W. _Marginal records._--Baja California (Huey, 1927:68): Laguna Hanson, Sierra Juarez; type locality. SYLVILAGUS BACHMANI MACRORHINUS Orr. 1935. _Sylvilagus bachmani macrorhinus_ Orr, Proc. Biol. Soc. Washington, 48:28, February 6, type from Alpine Creek Ranch, 3½ mi. S and 2-1/3 mi. E Portola, 1700 ft., San Mateo County, California. _Marginal records._--California (Orr, 1940:163): 10 mi. SW Suisun; W side Mt. Diablo; Summit Station, Santa Cruz Mts., thence north along coast to Golden Gate. SYLVILAGUS BACHMANI MARIPOSAE Grinnell and Storer. 1916. _Sylvilagus bachmani mariposae_ Grinnell and Storer, Univ. California Publ. Zool., 17:7, August 23, type from McCauley Trail, 4000 ft., near El Portal, Mariposa County, California. _Marginal records._--California (Orr, 1940): Carbondale (p. 158); French Gulch, 6700 ft., Piute Mtn. (p. 159). SYLVILAGUS BACHMANI PENINSULARIS (J. A. Allen). 1898. _Lepus peninsularis_ J. A. Allen, Bull. Amer. Mus. Nat. Hist., 10:144, April 12, type from Santa Anita, Baja California. 1909. _Sylvilagus bachmani peninsularis_, Nelson, N. Amer. Fauna, 29:255, August 31. _Marginal records._--Baja California (Nelson, 1909:255): type locality; Cape San Lucas. SYLVILAGUS BACHMANI RIPARIUS Orr. 1935. _Sylvilagus bachmani riparius_ Orr, Proc. Biol. Soc. Washington, 48:29, February 6, type from west side San Joaquin River, 2 mi. NE Vernalis, in Stanislaus County, California. Known from type locality only. SYLVILAGUS BACHMANI ROSAPHAGUS Huey.