Steromphala spratti (Forbes, 1844)
Aegean.
Grazer and deposit feeder in the infralittoral and upper circalittoral. Original taxon: Trochus spratti.
 
« Shell conoidal, dark brown coloured, adorned with a mosaic of white patches; whorls 6, spirally furrowed and striated obliquely, slightly flattened at the suture; base round; umbilicus small, white; aperture subquadrate.  – E. Forbes: “Report on the Mollusca and Radiata of the Aegean sea, and on their distribution, considered as bearing on geology”, Reports of the British Association for the Advancement of Science for 1843, London 1844, p.190.

45m deep, in nets, Saronic Gulf, western Aegean. 6,1mm.
The microsculpture is prosocline, like the labrum.
30-35m deep, Bozcaada island, Çanakkale province, W. Marmara, NW. Turkey. 8,5mm.
65m deep, Bozcaada. 7,9mm.
Source: gruppomalacologicoscalaria.org.
Original pictures provided by A. Nappo (IT).
– (CC BY-NC-SA) –
The variant “nanodea” Nordsieck. 25m deep, on Posidonia leaves, Kýthnos island, western Kykládes, S. Aegean. 9mm.

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