FIGURES 12–19 in Gato hyalinus gen. et sp. nov., an unusual araphid tube-dwelling diatom from Western Pacific and Caribbean islands

FIGURES 12–19: Gato hyalinus, SEM of valves without rimoportula at foot pole. Figs 12–14: Internal view of valve with rimoportula only at apical pole and detail of basal and apical poles (GU55A-C). Apical detail shows rimoportula at end of sternum. Basal detail shows irregular striae and rimmed pores. Figs 15, 16: External details of basal and apical poles of a valve with no basal rimoportula (GU44Z-15). Fig. 15. Basal pole shows three additional rimmed pores (arrows) interrupting transapical striae. Fig. 16: Apical pole shows rimoportula beyond the end of the sternum within the radiating striae. Figs 17, 18: Internal details of basal and apical poles of a valve with no basal rimoportula (GU44Z-15). Fig. 17: Detail of rimmed pores at the basal pole. Fig. 18: Detail of additional rimmed pore. Fig. 19: Detail of areolae along a fracture through the valve (Puerto Rico sample). Scale bars: Fig. 12 = 10 µm; Figs 13–16 = 5 µm; Figs 17, 18 = 1 µm; Fig. 19 = 500 nm.