FIGURE 5 in Two new species of the bathyal holothurian genus Pannychia (Elasipodida, Laetmogonidae) from Japanese waters

FIGURE 5. SEM images of wheel ossicles from ventral body walls of Pannychia nagasakimaruae sp. nov. (holotype, NSMT E-13401). A, large wheels with triangular rim teeth and calcareous membrane, convex side view (left) and concave side view (right); B, mid-sized wheels with rim teeth but calcareous membrane incompletely covering the nave, convex side view (left) and concave side view (right); C, small wheels without brim teeth and calcareous membrane, regular forms convex side view (C1 left) and concave side view (C1 right), irregular form with additional holes deriving on outer rim (C2); D, a perforated wheel.