Ĕphĭāltes (Ĕphĭālta, ae, Sid. praef. Carm. 7, 25), ae, m., = Ἐφιάλτης.
I The son of Aloeus and brother of Otus , one of the stormers of heaven , killed by Apollo , Hyg. Fab. 28; Claud. B. Get. 75; Verg. Cul. 234.—
II The betrayer of the Spartans at Thermopyiae , Front. Strat. 2, 2, 13.