Nassarius crassiusculus

Nassarius crassiusculus
	Three shells of Nassarius crassiusculus (museum specimens at Naturalis Biodiversity Center)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Family:	Nassariidae
Genus:	Nassarius
Species:	N. crassiusculus
Binomial name
	Nassarius crassiusculus; (Nyst, 1845)
Synonyms
	Buccinum crassiusculum Nyst, 1845 (original combination); Buccinum elegans Kiener, 1834 (invalid: junior homonym of Buccinum elegans O. G. Costa, 1822 and B. elegans J. de C. Sowerby, 1824; B. crassiusculum is a replacement name ); Nassarius elegans (Kiener, 1834);

Nassarius crassiusculus, is a species of sea snail, a marine gastropod mollusc in the family Nassariidae, the Nassa mud snails or dog whelks.^[1]

Taxonomy

Buccinum / Nassarius elegans was regarded by Cernohorsky (1984) as a synonym of Nassarius comptus. It is listed in WoRMS as a valid species on the authority of H. Kool. However, as the name Buccinum elegans Kiener, 1834, is nomenclaturally invalid, it is listed under its replacement name, Buccinum / Nassarius crassiusculus.

Description

The thick shell is ovate, conical, shining and smooth. Its ground color is whitish, ornamented with numerous undulated and reddish longitudinal lines. The spire composed of eight or nine convex whorls. The upper ones are plaited, and the others marked at their upper part with white and brown spots or blotches, alternately disposed, and surrounding the suture. A band a little deeper colored covers the body of the body whorl, the base of which is furnished with pretty distinct transverse striae or furrows, five or six in number. The white aperture is ovate, terminated above by a sort of canal, indicated by a transverse ridge upon the left lip. The outer lip is thick, slightly denticulated towards the base, and deeply striated within. The columella is arcuated, the base spirally folded. The left lip covers it, extends slightly upon the body of the shell, and forms a small, projecting keel, terminated by small drops, and a raised point.^[2]

Distribution

This species occurs in the Indian Ocean off the Seychelles

References

^ ^a ^b Bouchet, P. (2015). Nassarius crassiusculus (Nyst, 1845). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=862672 on 2016-05-10
^ Kiener (1840). General species and iconography of recent shells : comprising the Massena Museum, the collection of Lamarck, the collection of the Museum of Natural History, and the recent discoveries of travellers; Boston :W.D. Ticknor,1837 (described as Buccinum elegans)

Jarrett, A.G. (2000) Marine Shells of the Seychelles. Carole Green Publishing, Cambridge, xiv + 149 pp. NIZT 682 page(s): 69, fig. 300
Manganelli G., Spadini V. & Martini I. (2010). Rediscovery of an enigmatic Euro-Mediterranean Pliocene nassariid species: Nassarius crassiusculus Bellardi, 1882 (Gastropoda: Nassariidae). Bollettino della Società Paleontologica Italiana, 49 (3): 195–202

[WoRMS-1] Bouchet, P. (2015). Nassarius crassiusculus (Nyst, 1845). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=862672 on 2016-05-10

[Kiener-2] Kiener (1840). General species and iconography of recent shells : comprising the Massena Museum, the collection of Lamarck, the collection of the Museum of Natural History, and the recent discoveries of travellers; Boston :W.D. Ticknor,1837 (described as Buccinum elegans)

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