FIG. 4. — A-C in Revision of Hesione Savigny in Lamarck, 1818 (Annelida, Errantia, Hesionidae)

FIG. 4. — A-C, Hesione panamena Chamberlin, 1919, non-type specimen, LACM 7101: A, fragment of a gonad observed in the stereoscope (inset: isolated oocyte); B, same, observed in a microscope; C, oocyte, observed in microscope; D-F, Hesione genetta Grube, 1867, non-type specimen, UF 95: D, fragments of gonads, two oocytes shown after rupture of the gonad wall; E, close-up of another fragment of gonad showing two oocytes with abundant spermatozoans surrounding them; F, close-up of spermatozoans. Scale bars: A, B, 0.2 mm; C, E, 20 µm; D, 140 µm; F, 1.4 µm.