De institutione musica I.22: De ordine chordarum nominibusque in tribus generibus.
Now the order must be set out of all the strings that vary through the three kinds or are arranged in a fixed order. The first is the proslambanomenos, which is also called prosmelodos; the second is hypate hypaton, the third parhypate hypaton. The fourth is generally called lichanos, but if it is fitted in the diatonic kind, it is called lichanos hypaton diatonos; if in the chromatic, it is called diatonos chromatice or lichanos hypaton chromatice; if in the enharmonic, it is called lichanos hypaton enarmonios or diatonos hypaton enarmonios. After this it is called hypate meson, then parhypate meson, and then lichanos meson, simply, in the diatonic kind, diatonos meson, in the chromatic lichanos meson chromatice or diatonos meson chromatice, in the enharmonic diatonos meson enarmonios or lichanos meson enarmonios. These are followed by the mese. After this come two tetrachords, partly synemmenon, partly diezeugmenon. And the synemmenon is the one placed after the mese, that is, trite synemmenon; then lichanos synemmenon, the same in the diatonic being diatonos synemmenon, in the chromatic either diatonos synemmenon chromatice or lichanos synemmenon chromatice, in the enharmonic either diatonos synemmenon enarmonios or lichanos synemmenon enarmonios. After these, nete synemmenon. But if the synemmenon tetrachord is not joined to the mese string, but the diezeugmenon is, there is after the mese the paramese; then trite diezeugmenon, then lichanos diezeugmenon, which in the diatonic is diatonos diezeugmenon, in the chromatic either diatonos diezeugmenon chromatice or lichanos diezeugmenon chromatice, in the enharmonic either diatonos diezeugmenon enarmonios or lichanos diezeugmenon enarmonios. The same is also called paranete, with the addition of the diatonic or chromatic or enharmonic. Above these, nete diezeugmenon, trite hyperboleon, and what is the paranete hyperboleon, the same in the diatonic is diatonos hyperboleon, in the chromatic chromatice hyperboleon, in the enharmonic enarmonios hyperboleon. The last of these is the nete hyperboleon. Let the description be such as to contain the arrangement of the three kinds. In these you will note both the likeness of names and the difference; so that if the strings alike in all kinds are gathered together with those that are unlike, they make altogether twenty-eight. The description below shows this.