Alcithoe jaculoides
| Alcithoe jaculoides | |
|---|---|
| File:Alcithoe jaculoides 001.jpg | |
| Shell of Alcithoe jaculoides (holotype) | |
| Scientific classification Edit this classification | |
| 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 jaculoides is a species of large sea snail, a marine gastropod mollusc in the family Volutidae, the volutes. [2]
Description
[edit | edit source]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
[edit | edit source]This species is found only along the coast of North Island, New Zealand. [5]
References
[edit | edit source]- ^ 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
- ^ Alcithoe jaculoides A. W. B. Powell, 1924. 20 July 2024. Retrieved through: World Register of Marine Species.
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This article incorporates text from this source, which is in the public domain.
- ^ Powell A. W. B. (1979). New Zealand Mollusca. William Collins Publishers Ltd, Auckland, New Zealand, Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value)..
Sources
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