| Pionosyllis procera Hartman, 1965 |
| Pionosyllis riojai San Martín, 1990 |
| Pionosyllis spinisetosa San Martín, 1990 |
| Pionosyllis subterranea Hartmann-Schröder, 1956 |
| Pionosyllis templadoi San Martín, 1991 |
| Pionosyllis uraga Imajima, 1966 |
| Pionosyllis weismanni Langerhans, 1879 |
| Plakosyllis Hartmann-Schröder, 1956 |
| Proceraea Ehlers, 1864 |
| Proceraea anopla (Monro, 1933) |
| Proceraea cornuta (Agassiz, 1862) |
| Procerea Ehlers, 1864 |
| Pseudobrania San Martín, 1984 |
| Pseudobrania clavata (Claparède, 1863) |
| Pseudobrania euritmica Sardá, 1984 |
| Pseudobrania limbata (Claparède, 1868) |
| Pseudobrania vieitezi San Martín, 1984 |
| Pseudosyllides Augener, 1927 |
| Pseudosyllides mexicana Góngora-Garza & de León-González, 1993 |
| Pterosyllis Claparède, 1863 |