Polynoidae Malmgren, 1867
Halosydna batheia Horst, 1917
Halosydna brevisetosa Kinberg, 1856
Halosydna fuscomarmorata (Grube, 1876)
Halosydna galapaginas Hartman, 1938
Halosydna gelatinosa (Sars, 1835)
Halosydna glabra Hartman, 1939
Halosydna hartmanae (Kudenov, 1975)
Halosydna johnsoni (Darboux, 1899)
Halosydna latior Chamberlin, 1919
Halosydna leucohyba (Schmarda, 1861)
Halosydna marginata (Grube, 1856)
Halosydna marmorata Hartmann-Schröder, 1965
Halosydna monensis Nolte, 1936
Halosydna muelleri (Grube, 1856)
Halosydna nesiotes (Chamberlin, 1919)
Halosydna parva Kinberg, 1856
Halosydna patagonica Kinberg, 1856
Halosydna pissisi (Quatrefages, 1866)
Halosydna samoensis (Grube, 1876)
Halosydna tuberculifer Chamberlin, 1919
