The catalogue of Bryozoans from Roscoff compiled by Echalier & Prenant (1951) is updated, following the reexamination of specimens held in different collections, and the study of material from dredging in the Bay of Morlaix. We have also included the species reported from Roscoff in the litterature since the first checklist. The present report deals with 34 species of Bryozoans, 25 of them new to the marine fauna of Roscoff. The list of Bryozoans from Roscoff now includes 140 species.