| Baiomys musculus subsp. ater Blossom & Burt, 1942 |
| Baiomys musculus subsp. brunneus (J. A. Allen & Chapman, 1897) |
| Baiomys musculus subsp. infernatis Hooper, 1952 |
| Baiomys musculus subsp. musculus (Merriam, 1892) |
| Baiomys musculus subsp. nebulosus Goodwin, 1959 |
| Baiomys musculus subsp. nigrescens (Osgood, 1904) |
| Baiomys musculus subsp. pallidus Russell, 1952 |
| Baiomys taylori (Thomas, 1887) |
| Baiomys taylori subsp. allex (Osgood, 1904) |
| Baiomys taylori subsp. analogus (Osgood, 1909) |
| Baiomys taylori subsp. ater Blossom & Burt, 1942 |
| Baiomys taylori subsp. canutus Packard, 1960 |
| Baiomys taylori subsp. fuliginatus Packard, 1960 |
| Baiomys taylori subsp. paulus (J. A. Allen, 1903) |
| Baiomys taylori subsp. taylori (Thomas, 1887) |
| Casiomys Voss, 2024 |
| Casiomys alfaroi (J. A. Allen, 1891) |
| Casiomys alfaroi subsp. agrestis (Goodwin, 1959) |
| Casiomys alfaroi subsp. gloriaensis (Goodwin, 1956) |
| Casiomys alfaroi subsp. palatinus (Merriam, 1901) |