The Author, taking as his starting-point numerous findings of specimens belonging to the genusVenerupiswith particular morphological characteristics, has come across clear written references to the existence in the Mediterranean of a fifth species in addition to the four best known (V. decussata, V. geographica, V. aurea, V. rbomboides). They allude toVenerupis lucens(Loc), which, on the basis of observations and comparisons carried out, has been found to be a valid species. Furthermore, data are provided as to the preferred habitat of the species and its geographical distribution.