Sylvilagus bachmani (Waterhouse, 1839) . Proc. Zool. Soc. Lond., 1839:103.

TYPE LOCALITY: "Between Monterey and Santa Barbara". Type locality restricted by Nelson (1909:247) to San Luis Obispo, California, USA .

DISTRIBUTION: W Oregon (USA) S of Columbia River to Baja California (Mexico), E to Cascade-Sierra Nevada Range (USA).

STATUS: "Still quite abundant" (Chapman and Ceballos, 1990).

SYNONYMS: cerrosensis (J. Allen, 1898); cinerascens (J. Allen, 1890); exiguus Nelson, 1907; howelli Huey, 1927; macrorhinus Orr, 1935; mariposae Grinnell and Storer, 1916; peninsularis (J. Allen, 1898); riparius Orr, 1935; rosaphagus Huey, 1940; tehamae Orr, 1935; trowbridgii Baird, 1855; ubericolor (Miller, 1899); virqulti Dice, 1926.

COMMENTS: Placed in genus Microlagus together with idahoensis by Gureev (1964:171). This is the only species of Sylvilagus known to have retained the putative ancestral karyotype (2n=48) shared by all known Lepus, and by Romerolagus (Robinson et al., 1981, 1984). Reviewed by Chapman (1974, Mammalian Species, 34).