The purpose of this application is to conserve, by designation of a neotype for Dodecaceria concharum Orsted, 1843, the general usage of this name for a parthenogenetic species, and of D. fimbriata (V errill, 1879) for a sexually and asexually reproducing species, of cirratulid polychaetes from Europe. There is circumstantial evidence that Orsted's original material may have been D. fimbriata but it is proposed that a neotype for D. concharurn be designated in accord with usage. D. concharum is the type species of Dodecaceria Orsted, 1843 by monotypy.