World Polychaeta Database (WPolyDb). Name Eteonopsis geryonicola reported in meeting minutes not actually written by Esmark. Date mistakenly given as 1878 in some usages (confused with a later meeting report)
16 May 1873 meeting minutes, relevant text translation: "In addition, by [dissecting] the crab [he [Esmark] had repeatedly found in the animal's [spaces?] a new Annelid, which he had called Eteonopsis geryonicola because of its resemblance to the genus Eteone, from which it is clearly distinguished by the very short, almost claw-like end of the brushes. He would later announce complete description and drawing of the same."