New species described: Erana piriana,sp. n., from Venezuela; E. tauaira, sp. n., from Colombia; and E. cendira. sp. n., from Brazil. Comparisons between the genera Olivensa Lane, 1965 and Cephalodina Bates, 1881 are provided. Cephalodina crassiceps Bates, 1881, is designated the type species and a key to the species of Cephalodina is presented. Cephalodina acangassu, sp. n., is described from Ecuador. Cephalodina megacephala (Bates,1866) is transferred to the genus Olivensu. Tyrinthia scissifrons Bates, 1866, known from Brazil (AP, AM, PA, MA) is recorded from Trinidad. Tyrinthia turuna, sp. n., is described from Colombia.
