Fig. 24 in A systematic revision of the genus Juga from fresh waters of the Pacific Northwest, USA (Cerithioidea, Semisulcospiridae)

Fig. 24. Radular morphology of Juga nigrina (I. Lea, 1856) (USNM 1413111, topotypic). A. View of the anterior radular ribbon. B. Detail of cutting edge of rachidian and lateral teeth. C. Detail of lateral teeth cusps. D. Detail of rachidian cusps. E. Inner and outer marginal teeth. F. Detail of inner and outer marginal teeth cusps. Scale bars: A = 200 µm; B–C = 50 µm; D, F = 40 µm; E = 100 µm.