| Palliolum incomparabile (Risso, 1826) |
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Iceland & Norway to Mediterranean. On sediments, among aalgae or rubble, from sublittoral grounds down to continental shelf and slope. Also byssally attached to hard substrates.
Original taxon: Pecten incomparabilis.
Málaga, Andalucia, S. Spain. 15mm. |
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| Synonym vitreus Risso, which may not be confused with Gmelin’s species. 280-380m deep, on mud and sand, Capraia island, Livorno, Toscana, W taly. 7mm. |
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« Pecten incomparabilis : Testa rotundata, glabra, nitida, hyalina; valva dextra striolis concentricis divaricantibus sculpta; epidermide glauco-pallida, striis eburneis fulmineis ornata; valva sinistra striolis concentricis divaricantibus sculpta; epidermide glauca, eburneo reticulata. » – A. Risso: Hist. nat. principales productions de l’Europe méridionale… vol. IV, Paris 1826, via BHL. – 67m deep, Bozcaada island, Çanakkale, Marmara province, NW. Turkey. 10mm. |
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| Same spot. 70-85m deep. 5,5-7mm. |
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Above and below:
shells from 110m deep, Almería, Andalucia. 5,5-7,5mm. |
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| The species is locally common, but often dredged dead, with valves separated. Consequently, complete specimens remain uncommon. |
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This one is complete.
80m deep, Poetto, Cagliari, S. Sardinia. 5,5mm.
Notice the ctelonium (right) and the sharp microsculpture. |
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| 80m deep, on red coral bottom, Lastovo island, Dubrovnik-Neretva Comitat, S. Croatia. 8,4mm. Original pictures provided by R. Stanić (HR) – (CC BY-NC-SA). |