Serpulidae Johnston, 1865
Codonytes infundibulum (not delle Chiaje, 1828) sensu Quatrefages, 1866
Eupomatus blumenbachii (Mörch, 1863)
Hydroides adamaformis Pillai, 2009
Hydroides alatalateralis (Jones, 1962)
Hydroides albiceps (Grube, 1870)
Hydroides ancorispinus Pillai, 1971
Hydroides arnoldi Augener, 1918
Hydroides augeneri Zibrowius, 1973
Hydroides azoricus Zibrowius, 1972
Hydroides bandaensis Zibrowius, 1972
Hydroides bannerorum Bailey-Brock, 1991
Hydroides bifurcata (Pixell, 1913)
Hydroides bifurcatus Pixell, 1913
Hydroides bisectus Imajima & ten Hove, 1989
Hydroides bispinosa Bush, 1910
Hydroides bispinosus Bush, 1910
Hydroides brachyacanthus Rioja, 1941
Hydroides calopoma Zibrowius, 1973
Hydroides capensis Zibrowius, 1972
Hydroides centrospina Wu & Chen, 1981
Hydroides chilensis Hartmann-Schröder, 1962
Hydroides cruciger Mörch, 1863
Hydroides dafnii (Amoureux, Rullier & Fishelson, 1978)
Hydroides deleoni Bastida-Zavala & ten Hove, 2003
Hydroides dianthus (Verrill, 1873)
Hydroides dipoma (Schmarda, 1861)
Hydroides diramphus Mörch, 1863
Hydroides elegans (Haswell, 1883)
Hydroides elegantulus (Bush, 1910)
Hydroides exaltatus (Marenzeller, 1885)
Hydroides externispina Straughan, 1967
Hydroides ezoensis Okuda, 1934
Hydroides floridanus (Bush, 1910)
Hydroides furcifer (Grube, 1878)
Hydroides fuscus Imajima, 1976
Hydroides fusicola Mörch, 1863
Hydroides gairacensis Augener, 1934
Hydroides glandifer Rioja, 1941
Hydroides gracilis (Bush, 1905)
Hydroides groenlandica Mörch, 1863
Hydroides helmatus (Iroso, 1921)
Hydroides heterocerus (Grube, 1868)
Hydroides heterofurcatus Pillai, 1971
Hydroides homoceros Pixell, 1913
Hydroides huanghaiensis Sun & Yang, 2000
Hydroides humilis (Bush, 1905)
Hydroides inermis Monro, 1933
Hydroides kimberleyensis Pillai, 2009
Hydroides lambecki Bastida-Zavala & ten Hove, 2002
Hydroides longispinosa Imajima, 1976
Hydroides longispinosus Imajima, 1976
Hydroides longistylaris Chen & Wu, 1980
Hydroides malleolaspina Straughan, 1967
Hydroides malleolaspinus Straughan, 1967
Hydroides microtis Mörch, 1863
Hydroides minax (Grube, 1878)
Hydroides mongeslopezi Rioja, 1958
Hydroides monroi Zibrowius, 1973
Hydroides mucronatus Rioja, 1958
Hydroides multispinosus Marenzeller, 1885
Hydroides nanhaiensis Wu & Chen, 1981
Hydroides niger Zibrowius, 1971
Hydroides nodosa Straughan, 1967
Hydroides nodosus Straughan, 1967
Hydroides norvegicus Gunnerus, 1768
Hydroides novaepommeraniae Augener, 1925
Hydroides ochoterena Rioja, 1941
Hydroides operculatus (Treadwell, 1929)
Hydroides panamensis Bastida-Zavala & ten Hove, 2003
Hydroides parvus (Treadwell, 1902)
Hydroides perezi Fauvel, 1918
Hydroides plateni (Kinberg, 1867)
Hydroides priscus Pillai, 1971
Hydroides protulicola Benedict, 1887
Hydroides pseudexaltatus Pillai, 2009
Hydroides pseudouncinatus Zibrowius, 1968
Hydroides ralumiana Augener, 1927
Hydroides ralumianus Augener, 1927
Hydroides recta Straughan, 1967
Hydroides rectus Straughan, 1967
Hydroides recurvispina Rioja, 1941
Hydroides rhombobulus Chen & Wu, 1980
Hydroides rostratus Pillai, 1971
Hydroides salazarvallejoi Bastida-Zavala & ten Hove, 2002
Hydroides sanctaecrucis Kroeyer in Mörch, 1863
Hydroides similis (Treadwell, 1929)
Hydroides similoides Bastida-Zavala & ten Hove, 2002
Hydroides simplidentatus Pillai, 2009
Hydroides sinensis Zibrowius, 1972
Hydroides spiculitubus Pillai, 2009
Hydroides spiratubus Pillai, 2009
Hydroides spongicola Benedict, 1887
Hydroides steinitzi Ben-Eliahu, 1972
Hydroides stoichadon Zibrowius, 1971
Hydroides tambalagamensis Pillai, 1961
Hydroides tenhovei Bastida-Zavala & Leon-Gonzalez, 2002
Hydroides trilobulus Chen & Wu, 1978
Hydroides trivesiculosus Straughan, 1967
Hydroides trompi Bastida-Zavala & ten Hove, 2003
Hydroides tuberculata Imajima, 1976
Hydroides tuberculatus Imajima, 1976
Hydroides uncinata (Phillipi, 1844)
Hydroides uncinatus (Philippi, 1844)
Hydroides uniformis Imajima & Ten Hove, 1986
Hydroides xishaensis Chen & Wu, 1978