- Streptosyllis arenae Webster & Benedict, 1884
- Streptosyllis varians Webster & Benedict, 1887
- Syllides benedicti Banse, 1971
- Syllides convolutus Webster & Benedict, 1884
- Syllides convulota Webster & Benedict, 1884 accepted as Syllides convolutus Webster & Benedict, 1884
- Syllides eburneus Riser, 1997
- Syllides longocirrata (Örsted, 1845) accepted as Syllides longocirratus (Örsted, 1845)
- Syllides longocirratus (Örsted, 1845)
- Syllides setosa Verrill, 1882