''Phorcus articulatus'' is a
species of
sea snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...
, a
marine
Marine is an adjective meaning of or pertaining to the sea or ocean.
Marine or marines may refer to:
Ocean
* Maritime (disambiguation)
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* ...
gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusk in the
family Trochidae, the top snails.
[Gofas, S. (2012). ''Phorcus articulatus'' (Lamarck, 1822). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=689174 on 2012-11-23]
Description
The height of the shell varies between 15 mm and 28 mm, its diameter between 21 mm and 24 mm. The shell is imperforate in the adult, generally perforate when immature. It is heavy and thick and has an elongate-conical shape. Its color is cinereous greenish or whitish, spirally traversed by bands composed of alternating white and black purplish or red squarish spots. The intervals between the bands are longitudinally closely lineolate with blackish. The
spire is elevated. The shell contains about 6
whorl
A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs).
Whorls in nature
File:Photograph and axial plane floral ...
s. The upper ones are slightly convex, the last generally constricted and concave below the
suture, then convex. The spiral impressed grooves or lines are like those of ''
Phorcus turbinatus
''Phorcus turbinatus'', common name the turbinate monodont, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.Gofas, S. (2012). ''Phorcus turbinatus'' (Born, 1780). Accessed through: World Register of ...
'' in the young, but become generally obsolete in adult specimens. The
aperture has the same shape as in ''Phorcus turbinatus'', but is smaller and less oblique.
Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
(described as ''Monodonta articulata'')
Distribution
This species occurs in the following locations:
References
* Gmelin J. F., 1791: ''Carli Linnaei systema Naturae per regna tria naturae. Editio decimatertia, aucta, reformata, Vermes Testacea''; Leipzig ipsiae1 (6): 3021-3910 olluschi
* Salis Marschlins C. U. von, 1793: ''Reisen in verschieden Provinzen den Königreischs Neapel''; Zurich and Leipzig, Ziegler Vol. I: pp. 442 + 10 pl.
* Lamarck ( .-B. M.de), 1815-1822: H''istoire naturelle des animaux sans vertèbres''; Paris ol. 5: Paris, Deterville/Verdière ol. 6 published by the Author7 vol. molluschi sono compresi nei vol. 5-7. Vol. 5 (Les Conchiferes): 612 pp. [25 luglio 1818 Vol. 6 (1) (Suite): 343 pp. [1819]. Vol. 6 (2) (Suite): 232 pp. [1822]. Vol. 7: (Suite): 711 pp. [1822
* Payraudeau B. C., 1826: ''Catalogue descriptif et méthodique des Annelides et des Mollusques de l'île de Corse'' ; Paris pp. 218 + 8 pl.
* Risso A., 1826-1827: ''Histoire naturelle des principales productions de l'Europe Méridionale et particulièrement de celles des environs de Nice et des Alpes Maritimes'' Paris, Levrault Vol. 1: XII + 448 + 1 carta 826
Year 826 ( DCCCXXVI) was a common year starting on Monday (link will display the full calendar) of the Julian calendar, the 826th year of the Common Era (CE) and ''Anno Domini'' (AD) designations, the 826th year of the 1st millennium, the 26th ...
Vol. 2: VII + 482 + 8 pl. (fiori) ovembre 1827 Vol. 3: XVI + 480 + 14 pl. (pesci) ettembre 1827 Vol. 4: IV + 439 + 12 pl. (molluschi) ovembre 1826 Vol. 5: VIII + 400 + 10 pl. (altri invertebrati) ovembre 1827
* Récluz C. A., 1843: ''Catalogue descriptif de plusieurs nouvelles espèces de coquilles de France suivi d'observations sur quelques autres''; Revue zoologique, par la Société Cuvierienne 6: 5-12, 104-112, 228-238, 257-261.
* Bucquoy E., Dautzenberg P. & Dollfus G., 1882-1886: ''Les mollusques marins du Roussillon. Tome Ier. Gastropodes''; Paris, J.B. Baillière & fils 570 p., 66 pl
* Monterosato T. A. (di), 1888-1889: ''Molluschi del Porto di Palermo. Specie e varietà'' ; Bullettino della Società Malacologica Italiana, Pisa 13 (1888 889?: 161-180 14 (1889): 75-81
* Pallary P., 1900: ''Coquilles marines du littoral du Départment d'Oran''; Journal de Conchyliologie 48 (3): 211-422, pl. 6-8
* Pallary P., 1902: ''Liste des mollusques testacés de la baie de Tanger''; Journal de Conchyliologie 50: 1-39, pl. 1
* Monterosato T. A. (di), 1917: ''Molluschi viventi e quaternari raccolti lungo le coste della Tripolitania dall'Ing. Camillo Crema'' ; Bollettino Zoologico Italiano Ser. 3, 4: 1-28, pl. 1 (fig. 1-35)
* Pallary P., 1938: ''Les Mollusques marins de la Syrie''; Journal de Conchyliologie 82: 5-58, pl. 1-2
* Nordsieck F., 1974: ''Il genere Osilinus Philippi, 1847 nei mari europei''; La Conchiglia 9-10 (67-68): 21-23
External links
To World Register of Marine Species
*
{{Taxonbar, from=Q7187370
articulatus
Gastropods described in 1822