FIGURES 35–40 in New Amphicocconeis (Bacillariophyta) from Raivavae and Tahiti Islands (South Pacific) and Porto Belo (Brazil), with re-examination of Psammococconeis

FIGURES 35–40. Amphicocconeis antiqua sp. nov. SEM (material 'Papeete 4 Holothuria', from Tahiti, South Pacific). SVs in external view, note the elliptic sternum with cupules (Figs 35, 37, twin arrows), ogival apices and almost no shorter striae (Figs 35–36), SV areolae in external view, with straight and narrow opening and cupules (Figs 37–38), SVVC with simple fimbriae (Fig. 40, arrowhead), SV in internal view, with elliptic large sternum and narrow hymenes (Fig. 38). Scale bars: 6 µm (Fig. 36), 5 µm (Fig. 35), 4 µm (Fig. 39), 3 µm (Figs 38, 40), 1 µm (Fig. 37).