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(Quatrefages, 1866)

Operculum with a cup-shaped ampulla, the distal plate concave or convex, with or without an eccentric projection which can be with or without distal protuberances, distal to thick smooth peduncle with a tapered wing on each side. Peduncle more robust than in Pomatoceros triqueter . Peduncle inserted medially on the operculum. 12-16 pairs of radioli, united at the base for the half of their length.
Collar chaetae, when present, bordered, scarcely geniculate with a slender knee, finely serrated and tapered distally.
Thoracic membrane wide.

Up to 15 mm, usually 12 mm an about 1.5 mm width.

Tube white, about 4 cm long, 3 mm width, with a well-defined median keel and in adults two more vestigial ridges, one on each side.


Warm temperate species. On rocks; lower shore and shallow sublittoral.

Britain and the Netherlands (Vlissingen).

P. lamarcki and Pomatoceros triqueter have been considered to be one species, but are recently regarded as separate species.

Pomatoceros lamarcki