ONESIÆ THERMÆ, were, according to Strabo, excellent baths, and salutary waters, at the foot of the Pyrenees in Aquitania. Near the river Aturus stands at this day the town Bagnères, famous for its waters, which appear to be the Onsiæ of Strabo: situated in the county of Bigorre in Gascogne, near the river Adour.