Specimens from Croatian Adriatic with well developed spiral ridges and growth lines intersecting to form a punctate surface.
Left: height 2 mm; live with some spiral ridges (1) and a small area of punctate surface (2) not obscured by periostracum. Lower spiral row of brown marks fragmented by spiral ridges. Sublittoral 28 m. :copyright: P. Ugarković.
Right: height about 3 mm; collected dead from sediment. Periostracum lost so punctate, glossy surface fully exposed. Sublittoral about 20 m. :copyright: N. Lete.
Full SPECIES DESCRIPTION at flic.kr/p/2ouRqsc
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