Name introduced as: Hydractinia (Stylactis) ingolfi Kramp, 1932a: 13, figs 5-6. [details]
Northeastern Atlantic from the Arctic Seas south to NW Africa Includes also the North Sea and parts of the Baltic ... [details]
Indeterminate species based on juvenile colony, could be Stylactis inermis Allman, 1872 [=Hydractinia inermis ... [details]
Perhaps a synonym of Hydractinia echinata. [details]
secondary homonym of Hydractinia reticulata (Wright, 1861) and Hydractinia reticulata (Fraser, 1938) [details]
As the genus Clava is a member of the Hydractiniidae, Clavidae becomes a senior synonym of Hydractiniidae. A case ... [details]
The taxonomic status of this species is unclear. Calder (1988) regarded its as a junior synonym of H. arge Clarke, ... [details]
North Atlantic, 58°20’N 40°48’W, 3192 m depth, on Homalophiura tesselata (Verrill) (Ophiuridae) [details]
Spitzbergen; on gastropod Boreotrophon clathratus (L.) [details]
South-western Norway; on gastropod shells inhabited by pagurid crabs. [details]