Subspecies and Distribution. D. m. merriami Mearns, 1890 — SW USA and NW Mexico (desert regions from N Nevada and extreme SW Utah, through SE California and SW Arizona, to NE Baja California and Sonora). D. m. ambiguus Merriam, 1890 — SW USA and NW Mexico (N portion of the Chihuahuan Desert from NC New Mexico and W Texas, through E Chihuahua and Coahuila, to NE Durango, N Zacatecas, and C Nuevo Leon). D. m. annulus Huey, 1951 — NW Mexico (coastal plains of the Gulf of California, SE Baja California). D. m. arenivagus Elliot, 1904 — SW USA and NW Mexico (S Mojave Desert of SC California and E of Sierra Juarez and Sierra San Pedro Martir to C Baja California). D. m. atronasus Merriam, 1894 — NC Mexico (southern portion of the Chihuahuan Desert from EC Zacatecas, SE Coahuila, and SW Nuevo Leon to Aguascalientes and San Luis Potosi). D. m. brunensis Huey, 1951 — NW Mexico (Gulf of California coast of NE Baja California Sur). D. m. collinus Lidicker, 1960 — SW USA (San Felipe, Earthquake, La Puerta, and Aguanga valleys of SW California). D. m. frenatus Bole, 1936 — SW USA (SW Utah and NW Arizona). D. m. insularis Merriam, 1907 — NW Mexico (San José I, Gulf of California, Baja California Sur). D. m. margaritae Merriam, 1907 — NW Mexico (Santa Margarita I, Baja California Sur). D. m. mayensis Goldman, 1928 — NW Mexico (Gulf of California coastal plains of S Sonora and N Sinaloa). D. m. melanurus Merriam, 1893 — NW Mexico (Magdalena Plains and Cape Region of S Baja California Sur). D. m. mitchelli Mearns, 1897 — NW Mexico (Tiburon I, Gulf of California, Sonora). D. m. olivaceus Swarth, 1929 — SW USA and NW Mexico (transitional zone between the Sonoran Desert of SE Arizona and NE Sonora, and the Chihuahuan Desert of SW New Mexico and NW Chihuahua). D. m. parvus Rhoads, 1894 — SW USA (San Bernardino and San Jacinto valleys of SW California). D. m. platycephalus Merriam, 1907 — NW Mexico (Pacific slope S of the Sierra San Pedro Martir, S Baja California to the Vizcaino Desert of N Baja California Sur). D. m. quintinensis Huey, 1951 — NW Mexico (San Quintin Plain, Pacific coast of NW Baja California). D. m. trinidadensis Huey, 1951 — SW USA and NW Mexico (S California and N Baja California). D. m. vulcani Benson, 1934 — SW USA (disjunct and restricted distribution in Toroweap Valley, NW Arizona). in Heteromyidae

Subspecies and Distribution. D. m. merriami Mearns, 1890 — SW USA and NW Mexico (desert regions from N Nevada and extreme SW Utah, through SE California and SW Arizona, to NE Baja California and Sonora). D. m. ambiguus Merriam, 1890 — SW USA and NW Mexico (N portion of the Chihuahuan Desert from NC New Mexico and W Texas, through E Chihuahua and Coahuila, to NE Durango, N Zacatecas, and C Nuevo Leon). D. m. annulus Huey, 1951 — NW Mexico (coastal plains of the Gulf of California, SE Baja California). D. m. arenivagus Elliot, 1904 — SW USA and NW Mexico (S Mojave Desert of SC California and E of Sierra Juarez and Sierra San Pedro Martir to C Baja California). D. m. atronasus Merriam, 1894 — NC Mexico (southern portion of the Chihuahuan Desert from EC Zacatecas, SE Coahuila, and SW Nuevo Leon to Aguascalientes and San Luis Potosi). D. m. brunensis Huey, 1951 — NW Mexico (Gulf of California coast of NE Baja California Sur). D. m. collinus Lidicker, 1960 — SW USA (San Felipe, Earthquake, La Puerta, and Aguanga valleys of SW California). D. m. frenatus Bole, 1936 — SW USA (SW Utah and NW Arizona). D. m. insularis Merriam, 1907 — NW Mexico (San José I, Gulf of California, Baja California Sur). D. m. margaritae Merriam, 1907 — NW Mexico (Santa Margarita I, Baja California Sur). D. m. mayensis Goldman, 1928 — NW Mexico (Gulf of California coastal plains of S Sonora and N Sinaloa). D. m. melanurus Merriam, 1893 — NW Mexico (Magdalena Plains and Cape Region of S Baja California Sur). D. m. mitchelli Mearns, 1897 — NW Mexico (Tiburon I, Gulf of California, Sonora). D. m. olivaceus Swarth, 1929 — SW USA and NW Mexico (transitional zone between the Sonoran Desert of SE Arizona and NE Sonora, and the Chihuahuan Desert of SW New Mexico and NW Chihuahua). D. m. parvus Rhoads, 1894 — SW USA (San Bernardino and San Jacinto valleys of SW California). D. m. platycephalus Merriam, 1907 — NW Mexico (Pacific slope S of the Sierra San Pedro Martir, S Baja California to the Vizcaino Desert of N Baja California Sur). D. m. quintinensis Huey, 1951 — NW Mexico (San Quintin Plain, Pacific coast of NW Baja California). D. m. trinidadensis Huey, 1951 — SW USA and NW Mexico (S California and N Baja California). D. m. vulcani Benson, 1934 — SW USA (disjunct and restricted distribution in Toroweap Valley, NW Arizona).