Alcithoe jaculoides

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Alcithoe jaculoides
Shell of Alcithoe jaculoides (holotype)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Family: Volutidae
Genus: Alcithoe
Species:
A. jaculoides
Binomial name
Alcithoe jaculoides
Powell, 1924
Synonyms[1]
  • Alcithoe arabica jaculoides A. W. B. Powell, 1924 (superseded combination)
  • Alcithoe calva A. W. B. Powell, 1924
  • Alcithoe johnstoni A. W. B. Powell, 1924

Alcithoe jaculoides is a species of large sea snail, a marine gastropod mollusc in the family Volutidae, the volutes. [2]

Description

The length of the shell attains 188 mm, its diameter 70 mm.[3]

(Described as Alcithoe calva) The shell is very large, narrow, and elongated, comprising 8½ whorls. The protoconch has a scaphelloid shape. It is moderately large, consisting of 2½ smooth whorls. The remaining whorls are smooth and devoid of sculpture, except in rare instances where the spire whorls are faintly shouldered, showing traces of axial ribs.[4]

The spire is tall with slightly convex whorls. It measures approximately half the height of the aperture, The body whorl is elongate and sub-cylindrical, gradually contracted below to a rounded fasciole, not marked off by the usual ridge. The aperture is long and rather narrow with a shallow notch below. The outer lip is thickened and reflexed above, ascending about one-third the height of the penultimate whorl. The columella is straight, tapering to a sharp point below, with six comparatively weak, very oblique plications; the uppermost being more or less rudimentary. There is no projecting callus plate. The inner lip is spread as a thin glaze broadly over the body whorl.[4]

The color of the shell is pale buff, ornamented with indistinct, irregular light brown zigzag lines. The interior of the aperture is pinkish-fawn.[4]

Distribution

This species is found only along the coast of North Island, New Zealand. [5]

References

  1. ^ Bail, P. (2009). Alcithoe jaculoides Powell, 1924. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2009) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=385235 on 2010-04-16
  2. ^ Alcithoe jaculoides A. W. B. Powell, 1924. 20 July 2024. Retrieved through: World Register of Marine Species.
  3. ^ lcithoe jaculoides Powell, 1924. "NZ Mollusca - Alcithoe jaculoides". New Zealand Mollusca. Andrew Spurgeon. Retrieved 20 July 2024.{{cite web}}: CS1 maint: numeric names: authors list (link)
  4. ^ a b c Powell, A.W.B. (1928). "Three new Recent volutes from New Zealand". Transactions of the New Zealand Institute. 59: 361–364. Retrieved 20 July 2024. Public Domain This article incorporates text from this source, which is in the public domain.
  5. ^ Powell A. W. B. (1979). New Zealand Mollusca. William Collins Publishers Ltd, Auckland, New Zealand, ISBN 0-00-216906-1.

Sources

  • Powell, A.W.B. (1924). "Description of a new subspecies of Alcithoe arabica Martyn, from New Zealand". Proceedings of the Malacological Society of London. 16: 108–109.
  • Spencer, H.G., Marshall, B.A. & Willan, R.C. (2009). Checklist of New Zealand living Mollusca. Pp 196-219. in: Gordon, D.P. (ed.) New Zealand inventory of biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Christchurch: Canterbury University Press.{{cite book}}: CS1 maint: multiple names: authors list (link)
  • ., Trewick S.A. & Morgan-Richards M (2011). "Phylogenetic information of genes, illustrated with mitochondrial data from a genus of gastropod molluscs". Biological Journal of the Linnean Society. 104 (4): 770–785. doi:10.1111/j.1095-8312.2011.01756.x.
  • Bail, P., Limpus, A. (2005). Conchological Iconography 11, The Recent Volutes of New Zealand, with a revision of the genus Alcithoe H. & A. Adams, 1853. Hackenheim, Germany: ConchBooks.{{cite book}}: CS1 maint: multiple names: authors list (link)


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