 Eustathius' version of the story has the sisters reversed, so that Philomela married Tereus and that Tereus lusted after Procne.It is salient to note that in taxonomy and binomial nomenclature, the genus name of the martins (the larger-bodied among swallow genera) is "Progne", a Latinized form of Procne.Other related genera named after the myth include the Crag Martins "Ptyonoprogne", and Saw-wings "Psalidoprocne".