FIGURES 79–90. Parlibellus waabensis. SEM except Figs 79, 80 DIC. Figs 79, 80 in New species of benthic marine diatoms (Bacillariophyta) from the Western Pacific islands of Guam and Yap

FIGURES 79–90. Parlibellus waabensis. SEM except Figs 79, 80 DIC. Figs 79, 80. Holotype at two focal planes, Y39A. Fig. 81. Valve in valve view. Fig. 82. Detail of valve showing short biseriate sections of some striae on the mantle (arrows). Fig. 83. Valve in oblique view, arrow again pointing to biseriate stria. Figs 84, 85. External and internal aspect of valve apex showing terminal raphe hook relation to adjacent striae (arrows). Figs 86, 87. Details of internal apex and central area. Figs 88–90. Frustule in girdle view, with details of central and apical portions, the bands labeled in Fig. 90. Scale bars: Figs 79–83, 88 = 10 µm, Figs 84–87, 89, 90 = 5 µm