The genusFletchamia is characterized by having an elongate and subcylindrical body with a creeping sole that occupies from 50 to 70% of the body with. The eyes form a single row around the anterior tip, are crowded antero-laterally and continue posteriorly in two to three staggered rows. The parenchymalmusculature is weak and includes a loose ring zone of circulo-oblique fibers and a weak ventral plate of longitudinal fibers. The copulatory apparatus lacks a permanentpenis, but some species may have a rudimentary penis papilla. The femaleatrium communicates posteriorly with a diverticulum.