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The word Dircaeus could not be parsed. Trying a normal dictionary lookup:
Dircē, ēs (acc. Dircam, Plaut. Ps. 1, 2, 65), f., = Δίρκη.
- I. A fountain N. W. of Thebes, in Boeotia, Plin. 4, 7, 12, § 25; Ov. M. 2, 239; Stat. Th. 1, 38.
- B. Meton., poet., the region lying around this fountain, Stat. Th. 2, 322.
Hence, Dircæus, a, um, adj., Dircean; hence (pars pro toto), Boeotian: Thebae, Prop. 3, 17, 33 (4, 16, 33 M.); cf. ager, Stat. Ach. 1, 12: arva, Claud. Laud. Stil. 1, 320: Amphion, Verg. E. 2, 24: cygnus, i. e. Pindar, Hor. C. 4, 2, 25: heros, i. e. Polynices, Stat. Th. 2, 142 et saep.
- II. The wife of the Theban prince Lycus, who, on account of her cruelty to Antiope, was tied to a bull by Amphion and Zetheus, and dragged about till dead, and was afterwards thrown (changed, acc. to the fable) into the above-named fountain, Prop. 3, 15, 13 (4, 14, 11 M.); Hyg. Fab. 7 and 8; Plaut. l. l.