Neverita josephinia Risso, 1826
Mediterranean.
Predator in fine sand, at infralittoral depths.
A synonym is Natica olla de Serres, 1829.
 
« This shell is very smooth, translucent, plain, shiny, flesh-coloured, variegated with yellow and bluish. The umbilicus is violet, the operculum carlilaginous, glossy, very thin, amber-coloured, surrounded by a silver band. » – A. Risso: Histoire naturelle des principales productions de l’Europe méridionale… vol. IV, Paris 1826, p.150.

Pair collected near the entrance of Ayrolles lagoon, Gruissan, Occitania, S. France. 29-32mm.
« The foot is very ample, the belly white above, blackish at the end; it contains in june a quantity of small yellow eggs. » – Ibid. Calambrone beach, Livorno, Toscana, W. Italy. 34,5mm.
Colour variation in the umbilical callus.
Rochelongue, Cap d’Agde, S. France.
Kato Koufonisi, Cyclades, S. Ægean. Original picture provided by R. Pillon for WoRMS – (CC BY-NC-SA). The animal’s foot sprawls substantially far from the shell. « Propodium and mesopodium completely white, almost entirely covering the shell, includin spire… » – Hülsken & al.: “The Naticidae of Giglio Island”, Zootaxa 1770, Auckland 2008, p.35.
On sand, south of Gruissan. 19-32mm.
Collar-shaped egg-mass of Neverita josephinia on intertidal sandy ground in the Ebro delta, Tarragona, Catalunya, NE. Spain. Original picture provided by H. Hillewaert for Wikimedia Commons – (CC BY-SA).
The shell in Risso, plate IV fig.43.
The umbilical callus is well highlighted.
The species in W. Kobelt: Iconographie der schalentragenden europäischen Meeresconchylien vol. II, Cassel 1887, plate LVI.
On sand, Carnon, Mauguio, Hérault, Occitania, S. France. Original picture provided by P. Girard for iNaturalist.
– (CC BY-NC) –
The genus is occasionally subject to some uncoiling. Specimen from the sandy infralittoral of Corsica. 31mm. Original pictures provided by I. Mulero (ES).
– (CC BY-NC-SA) –

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