Amastra biplicata

Amastra biplicata
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Family:	Amastridae
Genus:	Amastra
Species:	A. biplicata
Binomial name
	Amastra biplicata; (Newcomb, 1854)
Synonyms
	Achatinella biplicata Newcomb, 1854 superseded combination; Amastra (Amastra) biplicata (Newcomb, 1854) alternative representation;

Amastra biplicata was a species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Amastridae. ^[1]

Description

(Original description) The shell is dextrorsal and elongately cylindrical, composed of seven rounded whorls with pronounced longitudinal striations. The suture is deep, and the small aperture is subovate. The inner lip is somewhat callous, while the columella is biplicate. The outer lip is acute and subtly submarginate internally.

The shell is rosy, partially veiled by a thin brown epidermis, with the upper whorls appearing black. The aperture interior is a vivid red. ^[2]

Distribution

This marine species is endemic to Hawaii and occurs on Lanai Island.

References

^ Amastra biplicata (Newcomb, 1854). 21 November 2024. Retrieved through: World Register of Marine Species.
^ Newcomb, W. (1854). "Descriptions of seventy·nine new species of Achatinella, (Swains.), a genus of pulmoniferous mollusks, in the collection of Hugh Cuming, Esq". Proceedings of the Zoological Society of London. 21: 142. Retrieved 19 November 2024. This article incorporates text from this source, which is in the public domain.

Cowie, R. H., Evenhuis, N. L. & Christensen, C. C. (1995). Catalog of the native land and freshwater molluscs of the Hawaiian Islands. Leiden: Backhuys Publishers. pp. 1–248.{{cite book}}: CS1 maint: multiple names: authors list (link)

External links

Bailey-Matthews National Shell Museum: image

[WoRMS-1] Amastra biplicata (Newcomb, 1854). 21 November 2024. Retrieved through: World Register of Marine Species.

[2] Newcomb, W. (1854). "Descriptions of seventy·nine new species of Achatinella, (Swains.), a genus of pulmoniferous mollusks, in the collection of Hugh Cuming, Esq". Proceedings of the Zoological Society of London. 21: 142. Retrieved 19 November 2024. This article incorporates text from this source, which is in the public domain.

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