Monophorus perversus (Linnaeus, 1758) |
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Galicia to Angola, Azores to Mediterranean. Predator on sessile preys in the infralittoral. Original taxon: Trochus perversus. Synonyms: maroccanum, seriatus… Many named variants. The two last basal cords are smooth; presence of additional cords just before the peristome. The species is often marbled with white on brownish background. 25m deep, Almería, Andalucia, S. Spain. 11mm. |
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Juvenile specimen, without protoconch, from shell grit in shallow water, Banyuls, Eastern Pyrenees, S. France. 11mm. Paolo G. Albano: « You can recognize it [a juvenile] by the lack of a fully formed last whorl, without peristome and base which are diagnostic. The appearance of the shell is therefore truncated, with a very angulated periphery of the last whorl. » |
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