| Nominal Species (n = 15) | Present allocation (n = 15) | Ref. |
|---|---|---|
| Physa acuta Draparnaud, 1805 | Physella acuta | 75097 |
| Physa ancillaria Say, 1825 | Physella ancillaria | 75097 |
| Physa cubensis Pfeiffer, 1839 | Physella cubensis | 75097 |
| Physa jennessi Dall, 1919 | Physa jennessi | 19 |
| Physa johnsoni Clench, 1926 | Physella johnsoni | 75097 |
| Physa magnalacustris Walker, 1901 | Physella magnalacustris | 75097 |
| Physa megalochlamys Taylor, 1988 | Physa megalochlamys | 19 |
| Physa natricina Taylor, 1988 | Physa natricina | 19 |
| Physa parkeri Currier, 1881 | Physella parkeri | 75097 |
| Physa peruviana Gray, 1828 | Physa peruviana | 2384 |
| Physa siberica Westerlund, 1876 | Physa siberica | 19 |
| Physa skinneri Taylor, 1954 | Physa skinneri | 19 |
| Physa vernalis Taylor & Jokinen, 1984 | Physa vernalis | 19 |
| Physa vinosa Gould, 1847 | Physella vinosa | 75097 |
| Physella wrighti Te & Clarke, 1985 | Physella wrighti | 19 |