Figures 98–106. Stricosus and Thalassiosira. Figs 98–103. Stricosus harrisonii. Figs 98, 99. Living cells showing plastids with pyrenoids. Figs 100, 101 in Marine benthic diatoms of Guam: new records, Dictyoneis apapae sp. nov., and updates to the checklist

Figures 98–106. Stricosus and Thalassiosira. Figs 98–103. Stricosus harrisonii. Figs 98, 99. Living cells showing plastids with pyrenoids. Figs 100, 101. Acid cleaned valves in LM and SEM. Fig. 102. External apex showing triangular hyaline area, two spines, rimoportula opening, and ocellulimbus with at least 7 rows of pores (contrast Fig. 62, Hyalosynedra). Fig. 103. Apex internal view showing symmetrical rimoportula (arrow). Figs 104–106. Thalassiosira nanolineata. Fig. 104. Valve in LM at two focal planes. Fig. 105, 106. External and internal aspects in SEM, showing central fultoportulae (F) and rimoportula (R) (arrows). Scale bars: Figs 98, 100, 101 = 20 µm, Fig 104 = 10 µm, Figs 99, 103, 105, 106 = 5 µm, Fig. 102 = 2 µm.