Rhizolepas annelidicola is a Cirripede parasite of the Polychaet [sic] worm Laetmonice producta obtained by dredging off the Moçambique coast. It belongs to the order Thoracica, to the suborder Lepadomorpha, and to the family Lepadidae, and is related to the genus Anelasma. It is completely parasitic. Uniramous thoracic appendages are present, but oral appendages are absent. There is neither mouth nor anus, but the parasite sucks the juices of its host by means of an extensive root-system arising from the peduncle.