Figs 19–22 in Gulella salpinx sp. n., a new critically endangered holoendemic species from the limestone deposits of the Marble Delta, KwaZulu- Natal, South Africa (Mollusca: Gastropoda: Streptaxidae)

Figs 19–22. Gulella salpinx sp. n. radula. 19. Active zone of radula at anterior odontophoral flexure, scale bar = 75 m. 20. Half-row of preceding edge of radula folded under and outermost 2–4 teeth not visible, scale bar = 25 m. 21. Zone of lateral maximum, showing basal attachment and elongate shaft/cusp, scale bar = 20 m. 22. Rachidian and shorter, innermost lateral teeth, scale bar = 10 m.