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]
^Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Monodonta mutabilis)
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
External links
"Phorcus mutabilis". Gastropods.com. Retrieved 16 January 2019.
January 20, 2023
phorcus, mutabilis, species, snail, marine, gastropod, mollusk, family, trochidae, snails, scientific, classificationkingdom, animaliaphylum, molluscaclass, gastropodasubclass, vetigastropodaorder, trochidasuperfamily, trochoideafamily, trochidaesubfamily, can. Phorcus mutabilis is a species of sea snail a marine gastropod mollusk in the family Trochidae the top snails 1 Phorcus mutabilisPhorcus mutabilisScientific classificationKingdom AnimaliaPhylum MolluscaClass GastropodaSubclass VetigastropodaOrder TrochidaSuperfamily TrochoideaFamily TrochidaeSubfamily CantharidinaeGenus PhorcusSpecies P mutabilisBinomial namePhorcus mutabilis Philippi 1846 Synonyms 1 Monodonta mutabilis Philippi 1846 Osilinus mutabilis Philippi 1846 Osilinus mutabilis divaricatoides Nordsieck 1974 Osilinus mutabilis farolito Nordsieck 1974 Trochus intermedius Monterosato 1872 Trochus mongenii Monterosato 1872 Trochus mutabilis Philippi 1846 original description Contents 1 Description 2 Distribution 3 References 4 External linksDescription EditThe 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 EditThis species occurs in the Mediterranean Sea the Adriatic Sea and in the Atlantic Ocean off Portugal References Edit a b Phorcus mutabilis Philippi 1846 Retrieved through World Register of Marine Species on 1 May 2010 Tryon 1889 Manual of Conchology XI Academy of Natural Sciences Philadelphia described as Monodonta mutabilis 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 amp 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 213External links Edit Phorcus mutabilis Gastropods com Retrieved 16 January 2019 Retrieved from https en wikipedia org w index php title Phorcus mutabilis amp oldid 1034722864, wikipedia, wiki, book, books, library,
