Skenea catenoides (Monterosato, 1877)
Mediterranean.
Grazer and deposit feeder in the infralittoral.
Original taxon: Cyclostrema catenoides.
4m deep, in grit, Siracusa, SE. Sicily. 1mm.
The species in T. A. di Monterosato: “Notizie sulle conchiglie della rada di Civitavecchia”, Annali del Museo civico di storia naturale di Genova vol. IX, Genova 1877, p.417.
 
« Disciform […] and entirely covered with very thin spiral stripes. – C. serpuloides is smooth in its upper face. C. exilissimum, Ph., has an angular surface. In the lower face of the new species, there are three or four chain-like striae like those covering the surface of some Philinae. » – Ibid. Hence the name: “catenoides” meaning “chain-like”.
40m deep, off Le Scole, south of the harbour, Isola del Giglio, Toscana, W. Italy. 0,9mm.

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