Alcadia mammilla
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Neritimorpha
Order:	Cycloneritida
Family:	Helicinidae
Genus:	Alcadia
Species:	A. mammilla
Binomial name
Alcadia mammilla Weinland, 1862
Synonyms[1]
Alcadia (Mamilla) mammilla Weinland, 1862 alternative representation Alcadia (Weinlandella) mammilla Weinland, 1862 ·

Alcadia mammilla is a species of an operculate land snail, terrestrial gastropod mollusk in the family Helicinidae.^[1]

The height of the shell attains 6.5 mm (0.26 in), its greatest diameter 7.5 mm (0.30 in).^{[citation needed]}

(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.^[2]

This species occurs in the Haiti.^[1]

• Espinosa, J. A.; Robinson, D. G. (2021). "Annotated checklist of the terrestrial mollusks (Mollusca: Gastropoda) from Hispaniola Island". Novitates Caribaea. 17: 71–146.
• Richling, I.; Glaubrecht, M. (2008). "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. 84 (2): 265–310.