Lewis & Short

Ĭos, i, f., = Ἴος, a small island of the Sporades, in the Ægean Sea, now Nio, Mel. 2, 7, 11; Plin. 4, 12, 23, § 69.Ĭētae, ārum, m., = Ἰῆται, the inhabitants of Ios, Varr. ap. Gell. 3, 11, 6.