κρῖναι δὲ λόγῳ πολύδηριν ἔλεγχον ἐξ ἐμέθεν ῥηθέντα → judge by reason the too much contested argument which has been given by me
euphōnia: ae, f., = εὐφωνία,I euphony, Donat. p. 1751 P.