Suddivisione su base morfologica e genetica del genere Bulinus in tre generi: Bulinus Müller, Physopsis Krauss e Mandahlbarthia gen. nov.
The taxonomy of the genus Bulinus is re-examined on the basis of morphology and of electrophoretic study of 20 gene-enzyme systems. The genus is at present divided into two subgenera: Bulinus and Physopsis. According to Mandahl-Barth the first subgenus is made up of three groups of species (the tropicus, truncatus and forskalii groups), while the species of the second subgenus are united in a fourth group (africanus). We have studied various species and subspecies belonging to the two subgenera...