Phorcus mutabilis (Philippi 1851)

Phorcus mutabilis is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.^[1]

Description

The size of the shell varies between 12 mm and 24 mm. The solid, globose-conoid shell is umbilicate or subimperforate. It resembles a young Phorcus articulatus. Its color is usually grayish-yellow, yellow or flesh-tinted, more or less obviously marked with obliquely radiating lines or maculations of dull crimson, sometimes broken into tessellations, sometimes faintly, minutely articulated with reddish, appearing nearly unicolored. The short spire is conoid. The suture is impressed. The 5 to 6 whorls are slightly convex and spirally finely grooved. The body whorl is somewhat flattened around the upper part. The large aperture is very oblique. The lip forms half of a circle. It is not so much thickened nor beveled within as in Phorcus articulatus. The columella is more flattened than that of Phorcus articulatus. It is scarcely edged with pearl, the tooth or lobe less heavy, more acute than that species. The umbilical region is always more excavated than Phorcus articulatus. The umbilicus is open, or nearly closed by the callus at the insertion of the columella.^[2]

Distribution

This species occurs in the Mediterranean Sea, the Adriatic Sea and in the Atlantic Ocean off Portugal.

References

• Monterosato T. A. (di), 1872: Notizie intorno alle conchiglie mediterranee; Palermo, Michele Amenta 61 p.
• Nordsieck F., 1974: Il genere Osilinus Philippi, 1847 nei mari europei; La Conchiglia 9–10 (67–68): 21–23
• Gofas S. & Jabaud A., 1997: The relationships of the Mediterranean trochid gastropods 'Monodonta' mutabilis (Philippi, 1846) and 'Gibbula' richardi (Payraudeau, 1826); Journal of Molluscan Studies 63(1): 57–64
• 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

Phorcus mutabilis is een slakkensoort uit de familie van de Trochidae.^[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1846 door Philippi.

Phorcus mutabilis é uma espécie de molusco pertencente à família Trochidae.

A autoridade científica da espécie é Philippi, tendo sido descrita no ano de 1846.

Trata-se de uma espécie presente no território português, incluindo a zona económica exclusiva.

Referências

• Phorcus mutabilis - World Register of Marine Species (consultado em 29 de dezembro de 2013).

Phorcus mutabilis là một loài ốc biển, là động vật thân mềm chân bụng sống ở biển thuộc họ Trochidae, họ ốc đụn.^[1]

Miêu tả

Phân bố

Chú thích

Tham khảo

• Dữ liệu liên quan tới Phorcus mutabilis tại Wikispecies

Phương tiện liên quan tới Phorcus mutabilis tại Wikimedia Commons

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