What is "hyrmine"

In Greek mythology, Hyrmine was a daughter of Neleus, Nycteus, or, according to others, of Epeius and Anaxiroe, and sister of Alector (though others assert she was an only child). She was the wife of Phorbas and by him the mother of the Argonauts Augeas, Actor and Tiphys. The natural father of Augeas by her may have been Helios.