Amastra caputadamantis

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Amastra caputadamantis
Amastra caputadamantis 001.jpg
Shell of Amastra caputadamantis (holotype)
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Amastridae
Genus: Amastra
Species:
A. caputadamantis
Binomial name
Amastra caputadamantis
Hyatt & Pilsbry, 1911
Synonyms

Amastra (Metamastra) caputadamantisHyatt & Pilsbry, 1911 alternative representation

Contents

Amastra caputadamantis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae. [1]

Description

The length of the shell attains 14.5 mm, its diameter 7.3 mm.

(Original description) The shell is cylindric-oblong and somewhat thin, with the penultimate whorl nearly equal in diameter to the body whorl. This gives the spire a bulging appearance at the base, tapering rapidly into a short cone.

The surface is finely striated axially, with these striae intersected on the last two whorls by incised spiral lines, which may be faint or nearly erased in some specimens. The shell consists of 5¾ to 6 slightly convex whorls, with the body whorl laterally compressed.

The aperture is small and semi-oval, angular at both ends. The outer lip is obtuse and thickened on the inner side. The columellar lamella is small and positioned near the base. The columellar lip is reflexed and adnate, with the axis being imperforate or displaying a short, narrow crevice.

As fossils, the shells are chalky white, reflecting their preserved state. [2]

Distribution

This species is endemic to Hawaii and occurs on Oahu Island.

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References

  1. ↑ Amastra caputadamantis Hyatt & Pilsbry, 1911 . 2 December 2024. Retrieved through: World Register of Marine Species .
  2. ↑ Hyatt, A. & Pilsbry, H. A. (1910–1911). Manual of conchology, structural and systematic, with illustrations of the species. Ser. 2, Pulmonata. Vol. 21: Achatinellidae (Amastrinae). Philadelphia: Conchological Department, Academy of Natural Sciences. p. 292. Retrieved 2 December 2024.{{cite book}}: CS1 maint: multiple names: authors list (link)PD-icon.svg This article incorporates text from this source, which is in the public domain .
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