Lewis & Short

Săïs, is, f., = Σάἱς, the capital of Lower Egypt, now Sa el-Hajar, Mel. 1, 9, 9; Plin. 5, 10, 11, § 64.
Hence,

  1. A. Săītes, ae, adj., = Σαἱτης, of or belonging to Sais, Saitic: (nomos), Plin. 5, 9, 9, § 49.
    In plur. subst.: Săītae, ārum, m., the inhabitants of Sais, Cic. N. D. 3, 23, 59.
  2. B. Săī̆tĭcus, a, um, adj., of Sais, Saitic: (charta), Plin. 13, 12, 23, § 76.