Pirenella conica (Blainville, 1829)
Arabic peninsula to Myanmar, to Mascarenhas and South Africa, Red Sea, Mediterranean.
Microbial film eater in the upper infralittoral, in sheltered places characterized by a high level of salinity.
 
Strongly euryhaline, this species, present in the Mediterranean prior to 1869, could belong to the little group of pre-lessepsian molluscs, which came into the Mediterranean, released from the Red Sea via some settlements in the chain of the salt lakes of the Isthmus of Suez, possibly initiated by ancient Nile floods.

Original taxon: Cerithium conicum.
Muddy bottom, in the lagoon near La Strea peninsula, Porto Cesareo, Lecche, Puglia, S. Italy. 15-19mm, 1998.
Extremely variable in colour and sculpture.
In muddy area, Elounda beach, Kolpos Mirabellou, Lasithi, N. Crete. 14mm.
Forms funicula, fusca, tricolor…
Above and below: Marsala, Trapani, NE. Sicily. 14,8-19mm.
Three rows of buttons per whorl, the subsutural one being often paler (but this last feature is not constant).
In very shallow muddy water, among meadows of Zostera marina Linné, between Navplio and Nea Kios, in the bottom of the bay, Argolida, Peloponnese, SW. Greece. 17-25mm.
This quiet and sheltered area, protected by the breakwater of Navplio’s harbour, is also colonized by Conus ventricosus, Hexaplex trunculus and Tritia neritea.

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