A study of the several fresh and brackish-water springs on Curaçao, carried out by Dr. P. WAGENAAR HUMMELINCK, revealed (a) the common occurrence on that island of Dugesia festai (Borelli 1898), a species which until then had only been known from the South American mainland (nearest find: Ecuador!), and (b) a hitherto undescribed species of Bothromesostoma, which is probably more abundant than the single discovery of it in small rain-puddles suggests. No Turbellaria were collected in the few springs which were sampled on Bonaire and Aruba.