The Nemerteans which form the subject of this communication were collected by Messrs F. P. Bedford and W. F. Lauchester during a year's stay in and near Singapore. The number of species procured is ten, nine of which have not hitherto been described. These are Eupolia pholidota, Cerebratulus natans, C. brunneus, C. robustus, C. insignis, C. erythrus, C. sordidus, C. ulatiformius and C. bedfordii. The species previously known is Eupolia quinquelineata (Bürger), but for reasons given it has been considered desirable to change the name to E. melanogramma.