| Syllis fuscosuturata Augener, 1922 |
| Syllis garciai (Campoy, 1982) |
| Syllis gerlachi (Hartmann-Schröder, 1960) |
| Syllis gracilis Grube, 1840 |
| Syllis heterochaeta Moore, 1909 |
| Syllis hyalina Grube, 1863 |
| Syllis hyperioni Dorsey & Phillips, 1987 |
| Syllis limbata (Claparède, 1868) |
| Syllis longigularis Verrill, 1900 |
| Syllis lutea (Hartmann-Schröder, 1960) |
| Syllis magna (Westheide, 1974) |
| Syllis maryae San Martín, 1992 |
| Syllis mexicana (Rioja, 1960) |
| Syllis okadai Fauvel, 1934 |
| Syllis ortizi San Martín, 1992 |
| Syllis papillosus (Tovar-Hernández, Granados-Barba & Solís-Weiss, 2002) |
| Syllis prolifera Krohn, 1852 |
| Syllis regulata Imajima, 1966 |
| Syllis rosea (Langerhans, 1879) |
| Syllis sardai San Martín, 1992 |