axial nodes on the periphery, about ten of the peripheral nodes visible from an angle. The lower part of the body whorl and the columella bear weak raised spirals which are wider near the periphery, narrower and nearly obsolete on the columella. The peripheral nodes are crossed by both the spiral sculpture and diagonal lines of growth. The subsutural slope is smooth and flat except for lines of growth marking former positions of the anal sinus, and the small tubercles or wrinkles just below the suture on the juvenile whorls.MacNeil F.S. (1960), The Tertiary and Quaternary Gastropoda of Okinawa; U. S. Geol. Surv. Prof. Paper 339, 1-148, 1960
