Alvania subcrenulata
(Bucquoy, Dautzenberg & Dolfuss, 1884)
Western Mediterranean. Shallow water to coralligen, and probably deeper. Grazer and detritus feeder.
Original taxon: Rissoa subcrenulata.
36m deep, on sand, Wied-iz-Zurrieq, Malta. 0,75 to 1mm.
« Shell rather solid, shiny, of an oval shape. Whorls 6, convex, the last being proportionnaly large […], bearing strong longitudinal costae and decurrent cords […] that define a reticulate sculpture made of subrectangular meshes provided with sharp tubercles at the points of intersection. Suture undulate. » – Bucquoy, Dautzenberg & Dollfus: Les mollusques marins du Roussillon vol. I, Paris 1882-1886.

40m deep, Scoglio Fino, Marciana Marina, Isola d’Elba, Toscana, W. Italy. 4,5-4,8mm.
Specimen from Los Escullos, Almería, Andalucia, S. Spain, and protoconch of another shell from Getares. Original pictures by S. Gofas & J. D. Oliver, for WoRMS – (CC BY-NC-SA).
A difference with A. nestaresi is given by the protoconch: corded in nestaresi, it bears minute nodules in subcrenulata.
Four rows of nodules on the penultimate whorl.
Protoconch adorned with minute lined up nodules.
12m deep, Vignola Bay, Marina di Davia, Corbara, NW. Corsica. 2,7mm. Original pictures provided by S. Clanzig (FR).
– (CC BY-NC-SA) –

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