Tritia recidiva
| Tritia recidiva | |
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| Species: | N. recidivus
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| Binomial name | |
| Nassarius recidivus (Martens, 1876)[1]
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Nassarius recidivus is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the Nassa mud snails or dog whelks.[3]
Description
The shell grows to a length of 12 mm. It has a high, slightly cyrtoconoid (almost with the shape of a cone , but having convex sides) spire and a somewhat constricted body whorl. The protoconch consists of ca. 3 rather large and smooth whorls. The first three teleoconch whorls contain spiral cords and axial folds, which fade out on the next two except for the subsutural spirals. The body whorl resumes a spiral sculpture of very even, flattened cords much that are broader than the interspaces. The aperture is lanceolate. The outer lip is slightly thickened externally and bears 5-6 strong rounded denticles inside. The parietal callus is appressed and devoid of a parietal denticle. It continues into a columellar callus which has a rounded edge, slightly raised over the siphonal canal and bearing a few tubercles. The colour of the shell has a brownish hue over a white background. The subsutural and median cords are articulated with darker brown. The aperture is white.
Distribution
This species is distributed in the Western Mediterranean Sea and in the Atlantic Ocean off Madeira.
References
- ^ Martens E. von (1876). Ueber einige Conchylien aus Westafrika. Jahrbücher der Deutschen Malakozoologischen Gesellschaft 3: 236-249, pl. 9. World Register of Marine Species, Retrieved 18 April 2010.
- ^ Clemam: Nassarius recidivus
- ^ Nassarius recidivus (Martens, 1876). Retrieved through: World Register of Marine Species on 18 April 2010.
- Adam W. & Glibert M. (1974). Contribution à la connaissance de Nassarius semistriatus (Brocchi, 1814). (Mollusca : Gastropoda). Bulletin de l’Institut Royal des Sciences Naturelles de Belgique 50(3): 1-78.
- 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