A Anterior end of Lepidonotus carinulatus showing the dark ring in the antennae and tentacular cirrus (anterodorsal view of the prostomium) B Anterior end showing the dorsal anus in the last chaetigerous segment. Scale bars: 1 mm (A, B). (p, palp; ma, median antennae; la, lateral antennae; tc, tentacular cirri; pr, prostomium; nn, nuchal nodules; dc. Dorsal cirrus; e, elytra; pl, papillae; a, anus; ac, anal cirri.