Fig. 3 in Polysyncraton (Ascidiacea, Didemnidae): a re-examination of some specimens and descriptions of three new species

Fig. 3. Polysyncraton amethysteum (Van Name, 1902), Paraíba, Brazil. a–b. Colonies in situ. c–d. Colony surface detail (arrow indicates one cloacal aperture) (DZUP POSC-14 and DZUP POSC-13, respectively). e. Cross section of the colony, with thin layer of spicules (arrow) (DZUP POSC-14). f. Spicules. Scale bars: e = 1 mm; f = 10 µm.