The present study is based on collections made from a large number of lakes, ponds and paddy fields during the period 1968-1972. A large number of new records and some new species have been identified in this material. The largest number of species have been recorded in the genus Lecane i.e. Lecane (Lecane), Lecane (Hemimonostyla) and Lecane (Monostyla) and the present paper is restricted to this genus. In all 25 species including two new species are recorded and described
