Ectoparasit in the infralittoral.
Original taxon: Turbo decussatus.
Shell oblong, conical, narrowed at the base, thin-walled, semi-translucent, fairly glossy, strongly sculptured of numerous radial costae crossed by many spiral cords, giving the shell, especially its the last whorl, a latticed appearance; in fact, this Partnenina bears much more of these spirals than the other members of the genus: here the area where they occur reaches almost the shoulder of the whorls.
Beach drift, La Franqui, Leucate, Occitania, S. France. 2,1mm.
Original pictures provided by S. Clanzig (FR).
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