Jouk, Martens & Schockaert 2007. Cirrifera genitoductus sp.n. (Platyhelminthes, Proseriata, Coelogynoporidae) from the Belgian coast, with observations on its ultrastructure and its significance for the taxonomy of the Coelogynoporidae. Belgian Journal of Zoology, 137(2), July 2007: 223-230