Cerion pygmaeum Pilsbry and Vanatta, 1896

Original Description

"Shell small and rather thin, varying from cylindric to short oval. Whorls 7 to 8½, the latter 2 to 3 of subequal diameter, those above forming a stumpy (often very short) cone. Rusty brown. Surface regularly costellate; apical whorl smooth, next whorl finely and regularly striated. Last whorl ascending as usual in front, having a very short umbilical rimation below.

            Aperture brownish within, rounded, obliquely truncate above.  Peristome white, blunt, slightly expanded; parietal callus thin. Axial fold inconspicuous; parietal tooth deep within and extremely small.

Alt. 10,    diam.  6⅓;    alt. of aperture 4 mm.

Alt. 12,    diam.  7;       alt. of aperture 5 mm.

Alt. 15⅔, diam.  7½;      alt. of aperture 6 mm.

Alt. 14⅔, diam.  6⅓;    alt. of aperture 5 mm.

Gibara, Cuba.

The short, typical form of this variety is extremely peculiar in shape, being shorter than any other Cerion. Longer examples are more like C. tenuilabre, of which we consider it a small variety. Many specimens are before us." (Pilsbry & Vanatta, 1896:334-335).

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