Alcadia rotunda is a species of an operculate land snail, terrestrial gastropod mollusk in the family Helicinidae.[1]
| Alcadia rotunda | |
|---|---|
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| Shell of Alcadia rotunda (specimen at the Natural History Museum, London) | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Neritimorpha |
| Order: | Cycloneritida |
| Family: | Helicinidae |
| Genus: | Alcadia |
| Species: | A. rotunda
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| Binomial name | |
| Alcadia rotunda (A. d'Orbigny, 1842)
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| Synonyms[1] | |
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Description
editThe 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
editReferences
edit- ^ a b c Alcadia rotunda (A. d'Orbigny, 1842). 6 August 2024. Retrieved through: World Register of Marine Species.
- ^ Orbigny, A. d' (1842). Mollusques. In: R. de la Sagra (ed.). Histoire physique, politique et naturelle de l'Ile de Cuba. Paris: Arthus Bertrand.
This article incorporates text from this source, which is in the public domain.
Further reading
edit
- Pfeiffer, L. (1854). "Nachträge zur Monographie Pneumonopomorum". Malakozoologische Blätter. 1: 80–111.
- Poey, F. (1852). "Memorias sobre la historia natural de la Isla de Cuba, acompañadas de sumarios Latinos y extractos en Francés". La Habana. 1: 1–463.
- Pfeiffer, L. (1849). "Description of twenty-nine new species of Helicina, from the collection of H. Cuming, Esq". Proceedings of the Zoological Society of London. 16 (187–188).
- Boss, K. J.; Jacobson, M. K (1973). "Monograph of the genus Alcadia in Cuba (Mollusca: Prosobranchia: Helicinidae)". Bulletin of the Museum of Comparative Zoology at Harvard College. 145: 311–358.