Alcadia microstoma

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

Alcadia microstoma
Shell of Alcadia microstoma (specimen at Naturalis Biodiversity Center)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Neritimorpha
Order:	Cycloneritida
Family:	Helicinidae
Genus:	Alcadia
Species:	A. microstoma
Binomial name
Alcadia microstoma (C. B. Adams, 1851)
Synonyms[1]
Alcadia (Palliata) microstoma (C. B. Adams, 1851) alternative representation Helicina (Alcadia) microstoma C. B. Adams, 1851 superseded combination Helicina microstoma C. B. Adams, 1851 (original combination)

Description

(Original description) The shell is globose-conic and moderately thickened, with a brown coloration that shades off to a smoky white along the suture and the periphery of the body whorl. It features rather light growth striae, interspersed with a few spiral series of punctures. The apex is obtuse, and the spire's outlines are variably curvilinear. The shell has slightly fewer than five moderately convex whorls with a well-impressed suture. The body whorl is subplanulate beneath. The aperture is semi-elliptical, compressed above and below, and laterally dilated. The outer lip is sinuate, well-expanded, and reflected except at the extremities, with a slit that is rather wide but not very deep. ^[2]

Distribution

This species occurs in Jamaica.^[1]