Figure 2 in Morphology and natural history of the cryptogenic sponge associate Polydora colonia Moore, 1907 (Polychaeta: Spionidae)

Figure 2. Polydora colonia, adult morphology based on scanning electron microscopy. (A) Overview of P. colonia. (B) Ventral view of palps showing the food groove lined by frontal cilia (fc) and papillae (pa). (C) Fifth chaetiger showing modified spines (arrow). (D) Single fifth chaetiger spine and dorsal fascicle of notochaetae. (E) Posterior end of worm showing cupshaped pygidium along with boat hooks of varying curvature. (F) Posterior end and pygidium showing boat hooks on posterior chaetigers. Scale: 500 µm (A); 50 µm (B); 100 µm (C); 25 µm (D); 200 µm (E, F).