FIGURE 28 in Spionidae (Annelida) from Lizard Island, Great Barrier Reef, Australia: the genera Aonides, Dipolydora, Polydorella, Prionospio, Pseudopolydora, Rhynchospio, and Tripolydora

FIGURE 28. Prionospio cf. tridentata. A–G—MIMB 28130. A–C. Developed coelomic oocytes with soft envelope; D. Chaetigers 7 and 8, dorsal view, showing soft heart body inside main dorsal vessel; E. Pinnate branchia of chaetiger 5; F. Fragment of pinnate branchia, showing longitudinal ciliary band on lateral side, and blood capillaries forming a loop inside each pinna; G. Right neuropodia of chaetigers 11 and 12, ventral view. Abbreviations: ca—blood capillaries; cb—ciliary bands, dv—main dorsal blood vessel, gv—germinal vesicle, hb—heart body, nl—nucleolus, sa—sabre chaetae, ve—vesicles, depressions in oocyte envelope. Scale bars: A–D—30 µm. E—100 Μm; F, G—50 µm.