Tritia varicosa

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]

• 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

Wikimedia Commons has media related to Tritia varicosa.

• "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

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