| Polistoma arenaria Casey, 1894 |
| Polistoma pacifica Casey, 1894 |
| Polylobus Solier, 1849 |
| Polylobus flavescens Sharp, 1887 |
| Polylobus mexicanus Bernhauer, 1935 |
| Polylobus misellus Pace, 1990 |
| Polymedon Casey, 1905 |
| Pontomalota Casey, 1885 |
| Pontomalota opaca (LeConte, 1863) |
| Priochirus Sharp, 1887 |
| Priochirus (Priochirus) Sharp, 1887 |
| Priochirus (Priochirus) bicornis (Fauvel, 1864) |
| Priochirus (Priochirus) dilutus Sharp, 1887 |
| Priochirus (Priochirus) haemorrhous Sharp, 1887 |
| Priochirus (Priochirus) laticornis Sharp, 1887 |
| Priochirus (Priochirus) salvini Sharp, 1887 |
| Procirrina Bernhauer & Schubert, 1912 |
| Prognatha Latreille, 1829 |
| Prognatha punctata LeConte, 1866 |
| Proplectus Raffray, 1890 |