FIGURE 4. Streblospio eridani n in A new species of Streblospio (Polychaeta: Spionidae) from the northern Adriatic Sea (Mediterranean Sea)

FIGURE 4. Streblospio eridani n. sp., ciliated branchiae. a anterior region with ciliated branchiae on chaetiger 1, dorso-lateral view. b detail of abfrontal surface, lateral view. c detail of ciliated branchiae, distal end, with distal digitiform appendage, dorsal view. d detail of ciliated branchiae and distal digitiform appendage, lateral view. Abbreviations: br, branchiae; cl, collar; ap, digitiform appendage; fs, frontal surface; as, abfrontal surface. Scale bars: a = 100 μm; b = 20 μm; c = 10 μm; d = 20 μm.