FIGURES 35–50 in Three new Hantzschia species (Bacillariophyta) from the Maritime Antarctic Region

FIGURES 35–50. Hantzschia amphioxys. LM and SEM observations of a population from James Ross Island (sample Anna Pool). Figs 35–46. Light micrographs showing a reduction in valve length. Fig. 47. External view of an entire valve showing the irregular, narrow ventral hyaline border. Fig. 48. External detail of the central area with the deflected, interrupted proximal raphe endings. Fig. 49. Internal detail of the central area with the interrupted, deflected proximal raphe endings. The arrows indicate the small silica bars separating the areolae. Fig. 50. Internal view of an entire valve showing the irregularly placed fibulae. Scale bar represents 10 μm except for figs 48 & 49 where scale bar = 1 μm.