Turbonilla amoena explained

Turbonilla amoena is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.^{[1] [2]}

Distribution

This species occurs in the following locations:

• Atlantic (Europe)
• Azores
• Canary Islands
• Cape Verde
• European waters (ERMS scope)
• Mediterranean Sea
• Morocco

Description

(Original description of Odostomia brevicula, Jeffreys, 1883) The conical shell is solid, opaque, and glossy. The sculpture is short, strong, straight. It shows rather sharp longitudinal ribs, of which there are about a dozen on the body whorl. They terminate abruptly at the periphery, which is bluntly angulated. The interstices of the ribs have an excavated appearance. Under the microscope the whole surface is covered lengthwise with very fine and close-set striae. The apex is quite smooth and polished. The colour is clear white. The spire is short. It contains four whorls (besides the bulbous and eterostrophe embryonic nucleus), compressed, and gradually enlarging. The body whorl is almost equal to half the spire. The suture is shallow and nearly straight. The aperture is oval, pointed at the base. The columella is curved. The tooth is small and indistinct, tubercular, placed on the upper part of the columella. There is no umbilicus.^[3]

References

• Warén A., 1980. Marine Mollusca described by John Gwyn Jeffreys, with the location of the type material. Conchological Society of Great Britain and Ireland. Special publication, 1. London, 60 pp
• Carrozza F. & Nofroni I., 1993. Sulla validità specifica di Turbonilla amoena (Monterosato, 1878) e sua priorità rispetto a Turbonilla compressa (Jeffreys, 1884)(Heterostropha: Pyramidellidae). Bollettino Malacologico,29: 97-191.
• Giannuzzi Savelli R., Micali P., Nofroni I. & Pusateri F. (2011) Odostomia brevicula Jeffreys, 1883 junior synonym of Turbonilla amoena (Monterosato, 1878) (Gastropoda, Heterobranchia, Pyramidellidae). Biodiversity Journal 2(4): 217-220.

External links

• CLEMAM
• Encyclopedia of Life

Notes and References

1. 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
2. Rolán E., 2005. Malacological Fauna From The Cape Verde Archipelago. Part 1, Polyplacophora and Gastropoda.
3. Jeffreys J.G., 1883. Mediterranean Mollusca (No. 3) and other Invertebrata. Annals and Magazine of Natural History 5, 11: 393-401