FIGURE 9. Oligobregma mucronata n in New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma

FIGURE 9. Oligobregma mucronata n. sp. Photomicrographs: A, holotype, Sta. NBP-21 (LACM-AHF Poly 7013), anterior half of body in ventral view; B, posterior parapodium, anterior view; C, same parapodium, detail of dorsal cirrus and internal glands; D, same parapodium, detail of ventral cirrus and internal glands; E‒I, developmental series of the prostomium (E, Sta. NBP-18, 20 setigers, 2.4 mm long; F, Sta.NBP-21, 22 setigers, 2.8 mm long; G, Sta. NBP-04, 24 setigers, 3.0 mm long; H, Sta. NBP-13, 28 setigers, 4.0 mm long; I, Sta. NBP-21, 30 setigers, 9.5 mm long); J, sperm packets from specimen from Sta. NBP- 20; K, capillaries and lyrate setae from a posterior notopodium from Sta. NBP-21. Abbreviations: dC, dorsal cirrus, vC, ventral cirrus.