Cerion paredonis Pilsbry 1902

Original Description

Cerion cumingianum Var. paredonis Pilsbry, n. v. Pl. 32, figs. 21, 22.

      Shell cylindric or ovate, fleshy-white with faint maculation above, or  blotched throughout with brown, the ribs mainly white. Whorls 8 ¾ to 10, slightly convex, sculptured with stout rounded ribs a little narrower than the concave intervals, and 22 to 28 in number on the penultimate whorl. Aperture dark brown within and wrinkled in harmony with the external ribs; peristome white, narrowly reflexed. Parietal callus very thin, the ribs showing strongly through it; parietal lamella low, but long, deeply entering to a dorsal position; axial lamella tooth-like.

      Length 17, diam. 6.8, longest axis of aperture 6 mill.

      Length 15, diam. 6.5, longest axis of aperture 6 mill.

      Length 18.8, diam. 7.5, longest axis of aperture 7 mill.

      Cayo Paredon Grande, off N. shore Puerto Principe, Cuba. (Arango.)

      The fleshy-white specimen is cylindric, with comparatively coarse ribs; the mottled shells, which I regard as typical of the variety, are smaller, tapering, with finer ribs. The dark mouth and long parietal lamella are the same in all. This form may be a tangent from the C. mumia stock." (Pilsbry, 1902:199)

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