Species Account

Palliolum incomparabile (Risso, 1826)

Pectinoidea : Pectinidae

Tebble name: Chlamys (Palliolum) furtiva (Lovén)
Smith & Heppell name: Palliolum furtivum (Lovén, 1846)

Notes on Nomenclature

Here previously as Paliolum furtivum (Lovén, 1846).

To size: To 20mm. Shell Structure: Thin, fragile. Equivalve: Valves equally convex. Equilateral: Inequilateral. Outline: Subcircular to suboval, a little higher than long (umbonal angle ca. 95°). Anterior ears ca. 3x longer than posterior, posterior ears distinct. Contour: RV anterior ear with a deep byssal notch. ctenolium well developed.

Sculpture: Both valves with antimarginal micro-sculpture only. RV anterior ear with 4-6 riblets. Margin: Inner margin smooth. Colour: Variable patterned or plain, white through yellows, to reds to brownish purple.

Distribution & Ecology

Restricted to the west coasts of Britain and Ireland from the Channel Islands to Shetland. Lives offshore from the sublittoral to the shelf edge.

Depth Range
Continental Shelf (to 200m)

Additional Information & Related Species

Additional Comments

Dijkstra & Gofas 2004, Dijkstra & Goud 2002 regard P. furtivum Lovén to be a junior synonym of incomparabile Risso 1826. CLEMAM regards these as separate species and we retain the Lovén name which was erected for Norwegian material.

Related Species


Listed are literature citing Palliolum incomparabile (Risso, 1826). Reference containing the species Type Description is highlighted.

Dijkstra H & Goud J 2002. Pectinoidea (Bivalvia, Propeamussidae and Pectinidae) collected during the Dutch CANCAP and MAURITANIA expeditions in the south eastern region of the North Atlantic Ocean. Basteria. 66: 31-82.
Lovén S 1846. Index Molluscorum litora Scandinaviae occidentalia habitantium Öfversigt af Kongliga Vetenskaps Akademiens Förhandlingar. 134-160, 182-204.
Risso A 1826. Histoire naturelle des principales productions de l'Europe Méridionale et particulièrement de celles des environs de Nice et des Alpes Maritimes 1. Paris, Levrault. 448pp.


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Record last modified: 17/05/2016