Syllis beneliahuae (Campoy, 1982)
Syllis botosaneanui (Hartmann-Schröder, 1973)
Syllis broomensis (Hartmann-Schröder, 1979)
Syllis cornuta Rathke, 1843
Syllis garciai (Campoy, 1982)
Syllis gerlachi (Hartmann-Schröder, 1960)
Syllis hyalina Grube, 1863
Syllis lutea (Hartmann-Schröder, 1960)
Syllis maryae San Martín, 1992
Syllis prolifera Krohn, 1852
Syllis truncata Haswell, 1920
Syllis truncata criptica Ben-Eliahu, 1977 accepted as Syllis gerlachi (Hartmann-Schröder, 1960)
Typosyllis (Langerhansia) botosaneanui Hartmann-Schröder, 1973 accepted as Syllis botosaneanui (Hartmann-Schröder, 1973)
Typosyllis (Langerhansia) broomensis Hartmann-Schröder, 1979 accepted as Syllis broomensis (Hartmann-Schröder, 1979)
Typosyllis lutea Hartmann-Schröder, 1960 accepted as Syllis lutea (Hartmann-Schröder, 1960)