Figure 6. Pelagobia longicirrata. A in Polychaete species captured in sediment traps moored in northwestern Mediterranean submarine canyons

Figure 6. Pelagobia longicirrata. A, prostomium with two pairs of antennae. B, gland formations at the anterior of the prostomium. C, detail of B, showing glands and holes with cilia-like structures. D, lateral view of the nuchal organs, including the first chaetiger, where the simple chaeta position is observed (arrow). E, reticulate field of pits with cilia at the nuchal organ. F, view of reticulate area with the extensible cilia-like structure. Scale bars: A, D, 100 Mm; B, 20 Mm; C, F, 5 Mm; and E, 3 Mm.