Biology:Vexillum exquisitum
| Vexillum exquisitum | |
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| Shell of Vexillum exquisitum (paralectotype at MNHN, Paris) | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Costellariidae |
| Genus: | Vexillum |
| Species: | V. exquisitum
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| Binomial name | |
| Vexillum exquisitum (Garrett, 1873)
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| Synonyms[1] | |
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Vexillum exquisitum is a species of small sea snail, marine gastropod mollusk in the family Costellariidae, the ribbed miters.[1]
Description
The length of the shell varies between 5 mm and 8 mm.
(Original description) The small shell is oblong, subfusiform, glassy, hyaline. It is pinkish red, with two transverse brown lines enclosing a white band, the band and one line continued up the spire. The spire is ratber short, turreted, subacute, little more than half the length of the shell. The shell contains 9 whorls (3 of which are embryonal), plano-convex, shouldered above, the body whorl rounded, much contracted aud granulated at the base, which is produced in a short slightly twisted siphonal canal. The shell is longitudinally ribbed, ribs closely set, rather large, angular, slightly nodulose above, 12 to 13 in number. The interstices are transversely impressedly striated. The aperture is narrow. The outer lip is rather thin, notched above, and slightly sinuous. The columella has four folds. [2]
The small, stout shell has a fusiform shape. The whorls show prominent, rounded shoulders and a series of strong axial ribs. The columella has four plaits. The shells of living examples have two dark-brown spiral lines on the body whorl that enclose a milk-white band. [3]
Distribution
This marine species occurs off the Tuamotu Islands, Tahiti, Cook Islands, Samoa and Fiji.
A fossil has been found in Holocene strata on Eniwetok Atol, Marshall Islands.
References
- ↑ 1.0 1.1 Vexillum (Pusia) exquisitum (Garrett, 1873). Retrieved through: World Register of Marine Species on 12 June 2012.
- ↑ Garrett, A. (1873). List of species of Mitridae collected at Rarotonga, Cook's Islands, with notes, also descriptions of new species. Proceedings of the Zoological Society of London. 1872: 839-843
- ↑ Ladd, H.S. (1977). Cenozoic fossil mollusks from western Pacific islands; Gastropods (Eratoidae through Harpidae). U.S. Geological Survey Professional Paper. 533: i–iv, 1–84, pls 1–23
This article incorporates text from this source, which is in the public domain.
- Herrmann M. (2012) New species of Vexillum (Pusia) (Gastropoda: Costellariidae) from French Polynesia and the Philippines. Gloria Maris 51(2-3): 45–61. [8 April 2012]
External links
Wikidata ☰ {{{from}}} entry
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