Tritia frigens

Tritia frigens
Shell of Tritia frigens (specimen at the Natural History Museum Rotterdam)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Family:	Nassariidae
Genus:	Tritia
Species:	T. frigens
Binomial name
Tritia frigens (Martens, 1878)
Synonyms [1]
Hinia frigens(Martens, 1878) Hinia frigens malacitanaeQuiles, 1973 Nassa (Tritia) brychiaWatson, 1882 Nassa brychiaWatson, 1882 Nassa brychia var. decorataLocard, 1897 Nassa brychia var. majorLocard, 1897 (synonym) Nassa brychia var. minorLocard, 1897 Nassa frigensMartens, 1878 Nassarius brychius(Watson, 1882) Nassarius (Nassarius) frigens(Martens, E.C. von, 1878)

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

Description

The shell grows to a length of 15 mm, its diameter 6 mm.

(Original description in Latin) The shell is ovate, sculptured with smooth, subvertical ribs that are doubly distant in their interspaces and appear nodulosely-abrupt upwards. It also features impressed lines, which are sparse above and more frequent below. A broader, opaque, whitish infrasutural lira is present.

The shell comprises 5-6 whorls, divided by a subcanaliculate suture. The aperture is ovate and slightly oblique, featuring a simple, unarmed white peristome. The inner margin is expanded into a narrow, subelliptic callus superiorly. ^[2]

Distribution

This species occurs in European waters and in the Atlantic Ocean off Morocco and Mauritania.

References

1. Marshall, B. (2016). Tritia frigens (Martens, 1878). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=876830 on 2016-05-18
2. Martens, E. von (1878). "Über einige Crustaceen und Mollusken, welche das zoologische Museum in letzer Zeit erhalten hat". Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin. 1878: 134. This article incorporates text from this source, which is in the public domain .

• Cernohorsky W. O. (1984). Systematics of the family Nassariidae (Mollusca: Gastropoda). Bulletin of the Auckland Institute and Museum 14: 1–356.
• Adam W. & Knudsen J. 1984. Révision des Nassariidae (Mollusca : Gastropoda Prosobranchia) de l’Afrique occidentale. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique 55(9): 1-95, 5 pl.
• 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

External links

• "Nassarius (Nassarius) frigens". Gastropods.com. Retrieved 16 January 2019.