Membranobalanus porphyrophilus sp. nov. cirri A, B, D, E, H holotype (WAM C66803) C, F, G paratype (SAMA C12706). A Right cirrus V lateral view B basal segments of cirrus V rami C intermediate segments of cirrus V anterior ramus D right cirrus VI mesial view (damaged) E same, intermediate segments F example of long serrulate setae on cirrus VI G basal segment of pedicel of right cirrus VI, mesial view showing denticles on anterior and posterior margin H basidorsal point of penis. Scale bars: 400 μm (A, D); 100 μm (B, C); 50 μm (F); 150 μm (G, H); 80 μm (E).