NARTHA´CIUM(Ναρθάκιον: Eth. Ναρθακιεύς), the name of a city and mountain of Phthiotis in Thessaly, in the neighbourhood of which Agesilaus, on his return from Asia in B.C. 394, gained a victory over the Thessalian cavalry. The Thessalians, after their defeat, took refuge on Mount Narthacium, between which and a place named Pras, Agesilaus set up a trophy. On the following day he crossed the mountains of the Achaean Phthiotis. (Xen. Hell. 4.3. 3—9 ; Ages. 2. §§ 3—5 ; Plut. Apophth. p. 211; Diod. 14.82.) Narthacium is accordingly placed by Leake and Kiepert south of Pharsalus in the valley of the Enipeus; and the mountain of this name is probably the one which rises immediately to the southward of Férsala. Leake supposes the town of Narthacium to have been on the mountain not far from upper Tjaterlí, and Pras near lower Tjaterlí. ( Northern Greece, vol. 4. p. 471, seq.) The town Narthacium is mentioned by Ptolemy (Ptol. 3.13.46), and should probably be restored in a passage of Strabo (9. p. 434), where in the MS. there is only the termination ...... ιον. (See Groskard and Kramer, ad loc.）