Anatomy and Systematics of the Neotropical Strophocheiloidea (Gastropoda, Pulmonata) with the description of a new family

The family Strophocheilidae (sensu Bequaert, 1948) is here divided into two - Strophocheilidae s.s. and Megalobulimidae, fam. n., on the basis of anatomical characters. New diagnoses are given for the genera of Strophocheilidae and a new systematic arrangement of the Neotropical Strophocheiloidea proposed. Representatives of 16 families of terrestrial, fresh-water and marine pidmonate gastropods were studied, besides some species of Prosobranchia and Opisthobranchia. Representatives of families of Pulmonata were selected to represent diverse evolutionary trends