The International Commission on Zoological Nomenclature has declined to use its plenary power to reverse Opinion 2404 regarding Case 3633 which would have resulted in giving priority to the species-group name Dysactis pallida Agassiz in Verrill, 1864 (currently Exaiptasia pallida) over Dysactis diaphana Rapp, 1829 (currently Exaiptasia diaphana). As a result, the Ruling given in Opinion 2404 stands and the species-group name pallida Agassiz in Verrill, 1864, as published in the binomen Dysactis pallida, will not be given precedence over the species-group name diaphana Rapp, 1829, as published in the binomen Actinia diaphana, whenever the two are considered synonyms.