Peromyscus californicus (Gambel, 1848) . Proc. Acad. Nat. Sci. Philadelphia, 4:78.

TYPE LOCALITY: USA, California, Monterey Co., Monterey .

DISTRIBUTION: C and S California, USA, excluding San Joaquin Valley, to NW Baja California Norte, Mexico.

SYNONYMS: benitoensis, insignis, mariposae, parasiticus .

COMMENTS: Electrophoretic and morphometric variation investigated by Smith (1979), who retained only a northern (c. californicus) and southern (c. insignis) subspecies. See Merritt (1978, Mammalian Species, 85). P. californicus species group.