τετραρχ-ία,ἡ,
A. tetrarchy, the province of a tetrarch, esp. of Thessaly, the four provinces being Thessaliotis, Phthiotis, Pelasgiotis, Hestiaeotis, Hellanic. 52J. , E Alc. 1154 , D. 9.26 , Theopomp.Hist. 201 ; also of the four divisions of each of the three Galatian tribes, Str. 12.5.1 ;ἡ τῶν δώδεκα τ. βουλή v.l.ibid.; cf. τετράς
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2. generally, of the divisions of Roman protectorates, e.g. Palestine under Augustus, J. BJ 2.6.3 ; districts adjacent to Syria,tetrarchiae regnorum instar singulae, Plin. HN 5.74 .
II. τ. ἱππική the command of four λόχοι, Arr. An. 3.18.5 , cf. Id. Tact. 10.1 , Ael. Tact. 9.2 , Ascl. Tact. 2.8 ;Φιλίππου τετραρχίας ἔργονmonument erected by Philip'sτ., IG 9(1).316 (Scarphea, Locr. Orient.,iv B.C.).