Marine triclads from the Plymouth area

Abstract

In 1962, 1964 and 1966 the author collected four species of marine triclads, viz.Procerodes littoralis(Ström),P. ireneaesp.nov.,P. lobata(O. Schmidt) andUteriporus vulgarisBergendal in the Plymouth neighbourhood. Each species is fully described. Attention has been given not only to internal characters, as the structure of the genital apparatus, but also to external features such as the shape of the head and the pattern of pigmentation, because these external characters are sufficient for the identification of the species. Further, the geographical distribution and ecological data have been recorded for each species.