Harmothoe hyalonemae. A.- Anterior end of male (dorsal view, without elytra). B, C.- Schematic shape of prostomium of Mediterranean specimens (B: female, C: male). D, E.- Parapodia (D: with elytrophore, E: with dorsal cirri). F-H.- Elytra (F:entire view, G: papillae in dorsal view, H: papillae in upper view). I.- Notoaciculum. J, K.- Bidentate neurochaetae. L, M.- Notochaetae. N, O.- Unidentate neurochaetae. Scale bars in microns.