Figure 12 from: Yonow N (2012) Opisthobranchs from the western Indian Ocean, with descriptions of two new species and ten new records (Mollusca, Gastropoda). ZooKeys 197: 1-129. https://doi.org/10.3897/zookeys.197.1728

Figure 12 - Risbecia bullockii A view of gills showing their arrangement (compare with Plate 35 "fig. 17"). Radular teeth of 16 mm pres. Sri Lankan specimen B first lateral teeth from right half of radula C view of one row of lateral teeth showing divided first denticle on each cusp D higher magnification of two lateral teeth E several laterals from the newest row, also with divided first denticles F outermost laterals showing very reduced cusps but still with divided first denticles. Scale bars 50 µm.