Nereidid epitokes, preserved specimens, dorsal view. A Perinereis helleri, male, inset shows close up of modified parapodia of natatory region B Perinereis helleri, female C Perinereis nigropunctata, male D Perinereis nigropunctata, female. mdc = modified dorsal cirri; sdc = scalloped dorsal cirri; pr = pygidial rosette. Scales bars: 2 mm (A, B), 3 mm (C, D).