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Alcadia rotunda

From Wikipedia, the free encyclopedia

Alcadia rotunda
Shell of Alcadia rotunda (specimen at the Natural History Museum, London)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Neritimorpha
Order: Cycloneritida
Family: Helicinidae
Genus: Alcadia
Species:
A. rotunda
Binomial name
Alcadia rotunda
(A. d'Orbigny, 1842)
Synonyms[1]
  • Alcadia (Idesa) rotunda (A. d'Orbigny, 1842) alternative representation
  • Helicina (Pachystoma) rotunda A. d'Orbigny, 1842 superseded combination
  • Helicina campanula L. Pfeiffer, 1849 (junior synonym)
  • Helicina retracta Poey, 1852 (junior synonym)
  • Helicina rotunda A. d'Orbigny, 1842 (original combination)

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

Description

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The height of the shell attains 7 mm (0.28 in), its greatest diameter 8 mm (0.31 in).[citation needed]

(Original description in Latin) The thick, smooth shell is globular-round and pink. The spire is inflated with a pointed apex. The shell contains six slightly convex whorls. It has a narrow, semi-lunar aperture with a thin, slightly reflexed outer lip. The columella is thickened and has some impressions. The columellar angle of the aperture is notched and sinuous.[citation needed]

(Original description in French also by A. d'Orbigny) A globular, slightly elevated shell that is thick and smooth. The spire is swollen with a slightly pointed apex and consists of six barely convex whorls. The narrow, semi-lunar aperture has thin, sharp, and very slightly reflexed edges. The columella is encrusted over half the width of the aperture and features a strong triangular depression in the middle. At the front, the columellar angle is slightly prominent and separated from the rest of the edge by a slight notch.[2]

Distribution

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This species occurs in Cuba.[1]

References

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  1. ^ a b c Alcadia rotunda (A. d'Orbigny, 1842). 6 August 2024. Retrieved through: World Register of Marine Species.
  2. ^ Orbigny, A. d' (1842). Mollusques. In: R. de la Sagra (ed.). Histoire physique, politique et naturelle de l'Ile de Cuba. Paris: Arthus Bertrand. Public Domain This article incorporates text from this source, which is in the public domain.

Further reading

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