Cephalothrix lineata Claparède, 1862

Kajihara, Hiroshi, 2019, Resolving a 200 - year-old taxonomic conundrum: neotype designation for Cephalothrix linearis (Nemertea: Palaeonemertea) based on a topotype from Bergen, Norway, Fauna norvegica 39, pp. 39-76 : 55

Cephalothrix lineata Claparède, 1862

Remarks. Bürger (1904: 18) included C. lineata of Claparède in the synonymy of C. linearis ( Rathke, 1799) . Gibson (1995: 325) listed C. lineata as an available name, stating that “the systematic position of Claparède’s species remains uncertain”. Originally, Claparède (1862: 150) simply described “Chez le Cephalothrix lineata OErst., ..., j’ai trouvé la trompe hérissée de longs poils rigides”. [In Cephalothrix lineata OErst., ..., I found the proboscis bristled with long, stiff hairs.] As Gibson (1995: 325) correctly pointed out, “Claparède confusingly gave Örsted as the naming authority for this species, but Örsted never used the name Cephalothrix lineata ”. Apparently, Claparède had no intention to establish a new taxon, and simply committed two errors, in the spelling of the specific name and in citing the naming authority. Article 33.5 of the Code (ICZN 1999) stipulates “In any case of doubt whether a different subsequent spelling is an emendation or an incorrect subsequent spelling, it is to be treated as an incorrect subsequent spelling (and therefore unavailable), and not as an emendation”. Therefore, the name lineata Claparède, 1862 , as published in the binomen Cephalothrix lineata , should be regarded as unavailable.