Alcadia mammilla explained

Alcadia mammilla is a species of an operculate land snail, terrestrial gastropod mollusk in the family Helicinidae.

Description

The height of the shell attains, its greatest diameter .

(Original description in Latin) The conical shell is rather solid and slightly striated. it is scarcely shiny, with various marbling and banding in whitish and reddish hues. The spire has a convex-conical shape, ending in a pale apex. There are 5 somewhat convex whorls, with the body whorl deflected at the front and slightly flattened at the base. The columella is short and thread-like, ending at the base with a small denticle and emitting a thin callus. The aperture is oblique and somewhat triangular-semioval. The peristome is thin, with the right margin simple at the top, then dilated and expanded, featuring a distinct sinus at the base separated from the columellar tooth.^[1]

Distribution

This species occurs in the Haiti.

Further reading

• Espinosa . J. A. . Robinson . D. G. . Annotated checklist of the terrestrial mollusks (Mollusca: Gastropoda) from Hispaniola Island. . Novitates Caribaea . 2021 . 17 . 71–146 .
• Richling . I. . Glaubrecht . M. . The types of Neotropical Helicinidae (Mollusca, Gastropoda, Neritopsina) in the Malacological Collection of the Museum für Naturkunde Berlin: an annotated catalogue, with emphasis on Cuban land snails . Zoosystematics and Evolution . 2008 . 84 . 2 . 265–310.

Notes and References

1. Weinland . D.F. . Diagnosen einiger neuen westindischen Landschnecken. . Malakozoologische Blätter. 1862 . 9 . 86–91 194–199 . 4 August 2024.