They were faire Ladies, till they fondly ſtriu’d / With th’Heliconian maides for mayſtery; / Of whom they ouer-comen, were depriu’d / Of their proud beautie, and th’one moyity / Transform’d to fiſh, for their bold ſurquedry, / But th’vpper halfe their hew retayned ſtill, / And their ſweet skill in wonted melody; / Which euer after they abuſd to ill, / T’allure weake traueillers, whom gotten they did kill.
Source: wiktionary