Tritia frigens
Species of gastropod
From Wikipedia, the free encyclopedia
Tritia frigens is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the Nassa mud snails or dog whelks.[1]
| 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] | |
| |
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.
