FIGURE 12 in New records and new species of Magelonidae (Polychaeta) from the Arabian Peninsula, with a re-description of Magelona pacifica and a discussion on the magelonid buccal region

FIGURE 12. Magelona symmetrica (A, NMW.Z.2010.037.0055; B, NMW.Z.2010.037.0047b; C–M, dissected 23 chaetiger specimen NMW.Z.2010.037.0044b): (A) anterior, dorsal view, showing methyl green staining between chaetigers 4−9, abdominal interparapodial glandular areas and dorsal white speckled areas between chaetigers 1−4 and 8−12 (note distal tip of prostomium curled downwards); (B−C) Prostomia dorsal views; (D−J) chaetigers 1, 3, 4, 7, 8, 9, 13 respectively (anterior views); (K−M) tridentate abdominal hooded hooks (oblique lateral, frontal and lateral views respectively).