Species
It contains the following species: * '' Hydroides bispinosa'' (Bush, 1910) * '' Hydroides brachyacantha'' (Rioja, 1863) * '' Hydroides crucigera'' (Moerch, 1863) * '' Hydroides dianthus'' (Verrill, 1873) * '' Hydroides dirampha'' (Mörch, 1863) * '' Hydroides elegans'' (Haswell, 1883) * '' Hydroides ezoensis'' (Okuda, 1934) * '' Hydroides huanghaiensis'' (Sun & Yang, 2000) * '' Hydroides lirs'' (Kupriyanova, Sun, ten Hove, Wong & Rouse, 2015) * '' Hydroides longispinosa'' (Chen & Wu, 1980) * '' Hydroides microtis'' (Mörch, 1863) * '' Hydroides norvegica'' (Gunnerus, 1768) * '' Hydroides parva'' (Treadwell, 1902) * '' Hydroides protulicola'' (Benedict, 1887) * '' Hydroides sanctaecrucis'' (Krøyer in Mörch, 1863) * '' Hydroides xishaensis'' (Chen & Wu, 1978)Ecology
Parasites of ''Hydroides'' include sea snails from the genus '' Fargoa''.References
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