Basisulcata lepida (Bayer, 1942)
Azores to Mediterranean, to Angola. Original taxon: Architectonica lepida. Circalittoral to continental shelf.
Synonyms: Solarium mediterraneum, Solarium sulcatum.
 
« The sculpture of the upper side of this Philippia in some respects bears a resemblance to that of Solarium pseudoperspectivum Brocchi, which explains why it has been repeatedly confounded with the latter. On inspection of the base one sees, however, that here the sculpture is quite different. Solarium pseudoperspectivum, namely, is spirally ribbed near the carina and has a widely opened umbilicus surrounded by a crenulated cingulum. Ph.  lepida, on the contrary, at the periphery of the base shows numerous concentric lines and is radiately ribbed towards the umbilicus, a sulcus separates these ribs from the umbilical crenulations. From Ph. discus this Philippia differs, in connection with the sculpture, by its smooth whorls bearing merely 2 cingula above the suture (Tiberi writes in his diagnosis “cingulo unico”, but on the figure of Di Monterosato 2 cingula are visible), whereas Ph. discus has 3 cingula alternating with faint spiral lines, scattered over the whole breadth of the whorl. On the base of Ph. discus one sees only the pars inferior of the cingulum peripherale, followed by some faint spiral lines and more inwards dichotomous folds arising from the sulcus internus. » – C. Bayer: Catalogue of the Solariidae in the Rijksmuseum van Natuurlijke Historie part. II: Philippia, page 11, via the Digital Academic Repository.

Beachstormed, Nerja, Málaga, Andalucia, S. Spain. 15mm.

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