Semus（*Sh=mos), a Greek grammarian of uncertain date. Suidas calls him an Elean, but it appears from Athenaeus (iii. p. 123d.) that this is a mistake, and that he was a native of Delos.
WorksSemus wrote, according to Suidas (s. v.), eight books on Delos, two books of περίοδοι, one on Paros, one on Pergamus, and a work on Paeans.
Δηλιακά or Δηλιάς) was the most important, and is frequently referred to by Athenaeus, and once or twice by other writers (Athen. 3.109f., iv. p. 173e., viii. pp. 331, f., 335, a., xi. p. 469c., xiv. pp. 614, a., 637, b., 645, b., xv. p. 676f.; Steph. Byz. s. v. Τέγυρα; Etym. Magn. s. v. Βίβλινος).