FIGURES 41–44 in New Amphicocconeis (Bacillariophyta) from Raivavae and Tahiti Islands (South Pacific) and Porto Belo (Brazil), with re-examination of Psammococconeis

FIGURES 41–44. Amphicocconeis antiqua sp. nov. SEM (material 'Papeete 4 Holothuria', from Tahiti, South Pacific). RV in external view, with dense macro-areolae shortly interrupted by narrow spaces devoid of ornamentation or not (Figs 41, 43), terminal raphe strongly hooked (Fig. 42), central area round to slightly transapically expended (Fig. 44). Scale bars: 5 µm (Fig. 43), 4 µm (Fig. 41), 2 µm (Fig. 44), 1 µm (Fig. 42).