Redescription and taxonomic reappraisal of Amphiporus elongatus Stephenson (Nemertea, Enopla) from the Firth of Clyde

Amphiporus elongatus Stephenson, 1911, is redescribed from histological studies of five specimens obtained from near the type locality. The systematic position of the species is reassessed and a new genus, Psammamphiporus, is established for it. Psammamphiporus elongatus (Stephenson) is so far known only from two intertidal sandy localities in the Firth of Clyde.

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