Lewis & Short

Syrtis, is (gen. Syrtidos, Luc. 9, 710), f., = Σύρτις, a sand-bank in the sea; esp. on the northern coast of Africa, Syrtis Major, near Cyrenaica, now Gulf of Sidra; and Syrtis minor, near Byzacene, now Gulf of Cabes, Sall. J. 78, 2; Mel. 2, 7; Plin. 5, 4, 4, § 26; Liv. 29, 33; 34, 62; Tib. 3, 4, 91; Prop. 2, 9, 33; Ov. M. 8, 120; Verg. A. 1, 111; 1, 146; 4, 41; Luc. 9, 303; 9, 861; Hor. C. 1, 22, 5; 2, 6, 3; 2, 20, 15; id. Epod. 9, 31; Prud. Apoth. 511.

  1. B. Trop.: videndum est, ne longe simile sit ductum. Syrtim patrimonii, scopulum libentius dixerim, Cic. de Or. 3, 41, 163.
    Hence,
  1. A. Syrtĭ-cus, a, um, adj., of or belonging to the Syrtis, Syrtian: mare, Sen. Vit. Beat. 14: solitudines, Plin. 8, 11, 11, § 32: ager, Sid. Ep. 8, 12: gentes, Sen. Ep. 90, 17.
  2. B. Syr-tis, ĭdis, adj. f., Syrtian: gemmae, Plin. 37, 10, 67, § 183.