Abstract
Cercaria strigata was first named and described briefly by Lebour (1908) from Tellina tenuis and Donax vittatus at Alnmouth, Northumberland. It was recorded again by the same author (1911) in 3% of Tellina tenuis at Millport. What was almost certainly the same cercaria had been previously noted by Giard (1907) between the mantle and shell in the same hosts. Giard did not name or describe the cercaria but suggested that it was the young stage of Gymnophallus oedemiae (Jameson) (= G. somateriae (Levins)) from the scoter Oedemia nigra L.