Amastra cylindrica
| Amastra cylindrica | |
|---|---|
| |
| Live Amastra cylindrica intermedia in situ, Oahu, Hawaii. | |
Scientific classification 
| |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Amastridae |
| Genus: | Amastra |
| Species: | A. cylindrica
|
| Binomial name | |
| Amastra cylindrica (Newcomb, 1854)
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| Synonyms | |
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Amastra cylindrica is a species of land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.[2]
Description
(Original description) The shell is dextral, elongately cylindrical, tapering to a pointed summit. It consists of seven slightly rounded whorls separated by a moderately distinct suture. The aperture is oblong-ovate, and the columella ends in a flexuous tooth. The shell's surface is marked by strong longitudinal striations. Its coloration is of a light horn tone, encircled by numerous narrow brown bands.[3]
Distribution
This species is endemic to Oahu Island, Hawaii.[1]
Conservation status
This species is one of the rarest mollusks in the world. While the captive population grew well, the wild population gradually dwindled down to one wild individual. The species is now only present in captive breeding and in small patches of protected habitat in the Waianae Mountains.[4]
References
- ^ a b Cowie, R.H. (1996). "Amastra cylindrica". IUCN Red List of Threatened Species. 1996 e.T985A13100609. doi:10.2305/IUCN.UK.1996.RLTS.T985A13100609.en. Retrieved 16 November 2021.
- ^ Amastra cylindrica(Newcomb, 1854). 19 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: 134. Retrieved 19 November 2024.
This article incorporates text from this source, which is in the public domain.
- ^ Sischo, David. "AMASTRA INTERMEDIA". Department of Land and Natural Resources. Snail Extinction Prevention Program. Retrieved November 14, 2025.
- 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
- Gulick, J. T. & Smith, E. A. (1873). "Descriptions of new species of Achatinellinae". Proceedings of the Zoological Society of London. 1873: 86.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - Pfeiffer, L. (1856). "Descriptions of twenty-three new species of Achatinella, collected by Mr. D. Frick in the Sandwich Islands; from Mr. Cuming's collection". Proceedings of the Zoological Society of London. 23 (297): 204.