{{Short description|Species of gastropod}} {{Speciesbox | image = Alcithoe jaculoides 001.jpg | image_caption = Shell of ''Alcithoe jaculoides'' (holotype) | taxon = Alcithoe jaculoides | authority = Powell, 1924 | synonyms_ref = <ref>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</ref> | synonyms = * ''Alcithoe arabica jaculoides'' <small>A. W. B. Powell, 1924</small> (superseded combination) * ''Alcithoe calva'' <small>A. W. B. Powell, 1924</small> * ''Alcithoe johnstoni'' <small>A. W. B. Powell, 1924</small> }}
'''''Alcithoe jaculoides''''' is a species of large sea snail, a marine gastropod mollusc in the family Volutidae, the volutes.<ref name="WoRMS">{{WRMS species|385235|''Alcithoe jaculoides'' A. W. B. Powell, 1924 |20 July 2024}}</ref>
==Description== The length of the shell attains 188 mm, its diameter 70 mm.<ref>{{cite web |last1=lcithoe jaculoides Powell, 1924 | title=NZ Mollusca - Alcithoe jaculoides |url=https://www.mollusca.co.nz/speciesdetail.php?taxa=3447 |website=New Zealand Mollusca |publisher=Andrew Spurgeon |access-date=20 July 2024}}</ref>
(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.<ref name="Auto2G-3">{{cite journal |last1=Powell |first1=A.W.B. |title=Three new Recent volutes from New Zealand. |journal=Transactions of the New Zealand Institute |date=1928 |volume=59 |pages=361–364 |url=https://paperspast.natlib.govt.nz/periodicals/TPRSNZ1928-59.2.5.12 |access-date=20 July 2024}} {{source-attribution}}</ref>
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.<REF name="Auto2G-3"/>
The color of the shell is pale buff, ornamented with indistinct, irregular light brown zigzag lines. The interior of the aperture is pinkish-fawn.<REF name="Auto2G-3"/>
== Distribution == This species is found only along the coast of North Island, New Zealand.<ref>Powell A. W. B. (1979). ''New Zealand Mollusca''. William Collins Publishers Ltd, Auckland, New Zealand, {{ISBN|0-00-216906-1}}.</ref>
==References== {{reflist}}
==Sources== * {{cite journal |last1=Powell |first1=A.W.B. |title=Description of a new subspecies of Alcithoe arabica Martyn, from New Zealand. |journal=Proceedings of the Malacological Society of London |date=1924 |volume=16 |pages=108–109}} * {{cite book |last1=Spencer, H.G., Marshall, B.A. & Willan, R.C. |title=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 |date=2009 |publisher=Canterbury University Press |location=Christchurch}} * {{cite journal |last1=., Trewick S.A. & Morgan-Richards M |title=Phylogenetic information of genes, illustrated with mitochondrial data from a genus of gastropod molluscs. |journal=Biological Journal of the Linnean Society |date=2011 |volume=104 |issue=4 |pages=770–785|doi=10.1111/j.1095-8312.2011.01756.x }} * {{cite book |last1=Bail, P., Limpus, A. |title=Conchological Iconography 11, The Recent Volutes of New Zealand, with a revision of the genus Alcithoe H. & A. Adams, 1853 |date=2005 |publisher=ConchBooks |location=Hackenheim, Germany}}
{{Commons category}} {{Taxonbar|from=Q3140496}}
jaculoides Category:Gastropods of New Zealand Category:Gastropods described in 1924 Category:Taxa named by Arthur William Baden Powell