1. _S. b. ubericolor_ 2. _S. b. tehamae_ 3. _S. b. macrorhinus_ 4. _S. b. riparius_ 5. _S. b. mariposae_ 6. _S. b. bachmani_ 7. _S. b. virgulti_ 8. _S. b. cinerascens_ 9. _S. b. rosaphagus_ 10. _S. b. howelli_ 11. _S. b. exiguus_ 12. _S. b. peninsularis_ 13. _S. b. cerrosensis_ 14. _S. mansuetus_ ]
Brush rabbits use simple "forms" in the brush for resting. Only one observer (Orr, 1940: 173) has reported an individual entering a hole. In patches of chaparral in which the rabbits live they make runways that are especially well defined at the edges of the brush. The outer entrance to a runway is tunnellike and one to two feet from the outer entrance there is a special form that serves as a lookout post. A brush rabbit that is about to venture into the open ordinarily pauses in such a form for several minutes, presumably to satisfy itself that no enemy is in the open area whither the rabbit is bound.
The breeding season is from January to June, at least in California. There are 2 to 5 young, averaging 3.5 per litter. They are born in a nest.
SYLVILAGUS BACHMANI BACHMANI (Waterhouse).
1839. _Lepus bachmani_ Waterhouse, Proc. Zool. Soc. London, Pt. 6 (for 1838):103, February 7, type from California, probably between Monterey and Santa Barbara.
1904. _Sylvilagus_ (_microlagus_) _bachmani_, Lyon, Smiths. Misc. Coll., 45:336, June 15.
1855. _Lepus trowbridgei_ Baird, Proc. Acad. Nat. Sci. Philadelphia, p. 333, type from Monterey County, California.
_Marginal records._--California (Orr, 1940:150): 2 mi. S mouth Salinas River; near Morro.
SYLVILAGUS BACHMANI CERROSENSIS (J. A. Allen).
1898. _Lepus cerrosensis_ J. A. Allen, Bull. Amer. Mus. Nat. Hist., 10:145, April 12, type from Cerros [=Cedros] Island, Baja California. Known from type locality only.
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.