FIGURES 21–29 in A new species of Calliostoma (Vetigastropoda: Calliostomatidae) from Canopus Bank, off northeastern Brazil

FIGURES 21–29. Calliostoma melliferum in SEM. 21. Paratype MZSP 90268, apertural view (D = 4.3 mm); 22. same, apical view (H = 4.8 mm); 23. same, protoconch detail (scale = 0.2 mm). 24–29. Radulae in SEM: 24. wide view (scale = 50 µm); 25. same, detail of right half (scale= 30 µm); 26. same, detail of central region (scale = 10 µm); 27. same, detail of right marginal teeth (scale = 10 µm); 28. another specimen, wide view, (scale = 50 µm); 29. same, detail of central region (scale = 20 µm).