Synonym: canariensis F. Nordsieck, 1975.
The species bears flat spiral ribs of various widths. The variations play on three main channels:
colour (red, green), pattern (marbled, lunules), spiral sculpture. As the islands offer a wide range of habitats,
different forms can be found: elongate, rough, solid, thick and eroded, or rounded, delicate and thin.
4-5m deep, under stones, Gran Canaria, Canary islands. 56mm.

Same spot, 52mm. Wide and flat ribs.

Young specimens from Canaries. 30-45mm. Notice the variable width of the ribs.

Fine cords. At low tide under rock, in tide pool, Playa Tarajales, Los Cristianos, Tenerife. 52mm.

Pronounced cords. 4-5m deep, under stones, southern coast, Madeira. 63mm.

Smoother. 3-5m deep, on rocks, Ponta do Sol, Madeira. 40mm.

Huge and rough specimen from Azores.
Under rocks, at 1-2m deep, Fajã Grande, Ilha de São Jorge. 89mm.

Azores again. 10m deep, Faial island, 48mm.

Variations in a same island of Canarias. Specimens collected at 2-3m deep, Tenerife. 35-38mm.

The form canariensis Nordsieck. The sculpture is thinner, delicate, the shell is flatter.
1-3m deep, under stones, Los Cancajos, La Palma, Canarias. 41,7mm.

Differences between canariensis and pure coccinea remain subtle. This red shell is "not a canariensis".
1-3m deep, under rocks, Los Cristianos, Arona, southern coast of Tenerife, 42mm.

Some shells from Lanzarote, Canarias:
2-5m deep, attached under rocks, Playa Dourada, in Playa Blanca area, on the southern end. 36-63mm.