FIGURE 11 in Scyphoproctus Gravier, 1904 (Annelida, Capitellidae): description of three new species and relocation of Heteromastides Augener, 1914 in Scyphoproctus

FIGURE 11. Scyphoproctus robustus sp. nov. (A) Thoracic region, lateral view; (B) Anterior end, lateral view; (C) Anal plaque, frontal view; (D) Anal plaque, lateral view. Scale bars: A, 1 mm; B, 0.5 mm; C, D, 0.1 mm.