Tritia varicosa

Tritia varicosa
Shell of Tritia varicosa
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Family:	Nassariidae
Genus:	Tritia
Species:	T. varicosa
Binomial name
Tritia varicosa (W. Turton, 1825)
Synonyms [1]
Buccinum tritoniumBlainvill, 1826 Hinia (Tritonella) varicosa(Turton, 1825) Hinia (Tritonella) varicosa paucicostataNordsieck, 1974 Hinia pygmaea(Lamarck, 1822) Hinia varicosa(W. Turton, 1825) Hinia varicosa paucicostataF. Nordsieck, 1973 · Nassa (Tritonella) pygmaea(Lamarck, 1822) Nassa (Tritonella) pygmaea var. elongataBucquoy, Dautzenberg & Dollfus, 1882 Nassa (Tritonella) pygmaea var. evaricosaBucquoy, Dautzenberg & Dollfus, 1882 Nassa elongatulaLocard, 1886 Nassa eutactaLocard, 1887 Nassa pygmaea(Lamarck, 1822) Nassa pygmaea var. elongataBucquoy, Dautzenberg & Dollfus, 1882 · Nassa pygmaea var. evaricosaBucquoy, Dautzenberg & Dollfus, 1882 Nassarius (Hinia) pygmaea(Lamarck, 1822) Nassarius (Hinia) varicosa Nassarius pygmaeus(Lamarck, 1822) Nassarius varicosus(Turton, 1822) Ranella pygmaeaLamarck, 1822 Tritia pygmaea(Lamarck, 1822) · Tritonia varicosaTurton, 1825

Tritia varicosa, common name the small dog whelk, is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the nassa mud snails or dog whelks. ^[1]

Distribution

This species occurs in European waters, the Mediterranean Sea, the Northeast Atlantic Ocean.

Description

Tritia pygmaea shells.

The length of the shell varies between 5 mm and 8 mm.

(Original description) The shell is conic and whitish, marked with rufous and featuring two or three white varices. The seven whorls are flattish and decussate. The aperture is purple, toothed on each side, and the columella is white externally. ^[2]

(Described as Ranella pygmaea) The shell is small, ovate-acute, ventricose, decussate, and appears reddish-ashy (cinereous-rufescent). It is adorned with tiny, numerous longitudinal costellae (fine ribs). The tail is short, and the outer lip is denticulate. ^[3]

References

1. Tritia varicosa (W. Turton, 1825) . 12 June 2025. Retrieved through: World Register of Marine Species .
2. Turton, W. (1825). "Description of some new British shells". Zoological Journal. 2: 365. Retrieved 12 June 2025. This article incorporates text from this source, which is in the public domain .
3. Lamarck, (J.-B. M.) de. (1822). Histoire naturelle des animaux sans vertèbres. Tome septième. Paris: published by the Author, 711 pp. This article incorporates text from this source, which is in the public domain .

• Nordsieck, F. (1973). Marine shells from the Mediterranean coast of Israel. Argamon. 4 (2-4): 57-63
• Cernohorsky W. O. (1984). Systematics of the family Nassariidae (Mollusca: Gastropoda). Bulletin of the Auckland Institute and Museum 14: 1–356.
• Backeljau, T. (1986). Lijst van de recente mariene mollusken van België [List of the recent marine molluscs of Belgium]. Koninklijk Belgisch Instituut voor Natuurwetenschappen: Brussels, Belgium. 106 pp.
• Hayward, P.J.; Ryland, J.S. (Ed.) (1990). The marine fauna of the British Isles and North-West Europe: 1. Introduction and protozoans to arthropods. Clarendon Press: Oxford, UK. ISBN   0-19-857356-1. 627 pp.
• Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180–213
• Muller, Y. (2004). Faune et flore du littoral du Nord, du Pas-de-Calais et de la Belgique: inventaire. [Coastal fauna and flora of the Nord, Pas-de-Calais and Belgium: inventory]. Commission Régionale de Biologie Région Nord Pas-de-Calais: France. 307 pp.
• Stein G. (2019). Die Gattung Tritia Risso, 1826 (Neogastropoda: Nassariidae) im Miozän des Nordseebeckens. Palaeontos. 32: 3-85

External links

• "Nassarius (Hinia) pygmaeus". Gastropods.com. Retrieved 16 January 2019.
• Turton W. (1825). Description of some new British shells. Zoological Journal, 2: 361-367
• Blainville, H. M. D. de. (1828-1830). Malacozoaires ou Animaux Mollusques. [in] Faune Française. Levrault, Paris 320 p., 48 pl
• Locard, A. (1886). Prodrome de malacologie française. Catalogue général des mollusques vivants de France. Mollusques marins. Lyon: H. Georg & Paris: Baillière. x + 778 pp
• Bucquoy E., Dautzenberg P. & Dollfus G. (1882-1886). Les mollusques marins du Roussillon. Tome Ier. Gastropodes. Paris: Baillière & fils. 570 pp., 66 pls
• Locard, A. (1887). Contributions à la faune malacologique française. X. Monographie des espèces de la famille des Buccinidae. Annales de la Société Linnéenne de Lyon. 33: 17-127, 1 pl
• Galindo, L. A.; Puillandre, N.; Utge, J.; Lozouet, P.; Bouchet, P. (2016). The phylogeny and systematics of the Nassariidae revisited (Gastropoda, Buccinoidea). Molecular Phylogenetics and Evolution. 99: 337-353