Lewis & Short

Sexītānus (Saxētānus), a, um, adj., of or belonging to Sex (called Σέξ by Ptolem.; Saxetanum in the Itiner.), a town of Hispania Baetica, Sexitan: colias, Plin. 32, 11, 53, § 146; cf. lacertus, Mart. 7, 78, 1.