Reithrodontomys humulis (Audubon and Bachman, 1941) . Proc. Acad. Nat. Sci. Philadelphia, 1:97.

TYPE LOCALITY: USA, South Carolina, Charleston Co., Charleston .

DISTRIBUTION: SE USA, from SE Oklahoma and E Texas east to the Atlantic seaboard, from S Maryland to C peninsular Florida.

SYNONYMS: carolinensis, dickinsoni, impiger, lecontii, merriami, virginianus .

COMMENTS: Subgenus Reithrodontomys, megalotis species group. Karyotype departs markedly from other species of megalotis group (Carleton and Myers, 1979; Engstrom et al., 1981).