| Syllis (Ehlersia) de Quatrefages, 1865 |
| Syllis (Ehlersia) heterochaeta Moore, 1909 |
| Syllis (Ehlersia) hyperioni Dorsey & Phillips, 1987 |
| Syllis (Typosyllis) Langerhans, 1879 |
| Syllis (Typosyllis) aciculata Treadwell, 1975 |
| Syllis (Typosyllis) alternata (Moore, 1908) |
| Syllis (Typosyllis) amica (de Quatrefages, 1865) |
| Syllis (Typosyllis) armillaris (O. F. Müller, 1776) |
| Syllis (Typosyllis) corallicola Verrill, 1900 |
| Syllis (Typosyllis) corallicoloides Augener, 1924 |
| Syllis (Typosyllis) exilis Gravier, 1900 |
| Syllis (Typosyllis) prolifera Krohn, 1852 |
| Syllis (Typosyllis) regulata Imajima, 1966 |
| Syllis (Typosyllis) regulata subsp. carolinae Day, 1973 |
| Syllis (Typosyllis) truncata Haswell, 1920 |
| Syllis aciculata (Treadwell, 1945) |
| Syllis adamantea (Treadwell, 1914) |
| Syllis alosae San Martín, 1992 |
| Syllis alternata Moore, 1908 |
| Syllis amica de Quatrefages, 1866 |