Gari costulata (Turton, 1822)
Færœ and Norway to Angola, Azores to Mediterranean. Deposit feeder from the upper infralittoral (rare), to the circalittoral (less uncommon) and the continental shelf, on muddy sands and gravels.
Original taxon: Psammobia costulata.
This is the smallest Gari in european waters.
Synonyms: discors, vatovai.
50m deep, on sand, off Poetto, Cagliari, S. Sardinia.8,5-12mm.
« With oblique ribs on the anterior side. » – W. Turton: Conchylia insularum Britannicarum, London 1822, p.xxviii.
Same spot. 13mm.
Psammobia discors in Philippi: « Testa oblonga, utrinque rotundata, subæquilatera, tenuissima, fragili, transversim tenuiter striata, latere postico sulcis longitudinalibus undulatis exarato. » – R. A. Philippi: Enumeratio molluscorum Siciliæ part. I, Berlin 1836, p.23. Same spot. 13,5mm.

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