“ A Biographical Dictionary (Ὀνοματολόγος or Πίναξ) of Learned Men, arranged according to classes (poets, philosophers) , the chief sources of which were the Μουσικὴ ἱστορία of Aelius Dionysius and the works of Herennius Philo. Much of it has been incorporated in the lexicon of Suidas, as we learn from that author. It is disputed, however, whether the words in Suidas (“of which this book is an epitome”) mean that Suidas himself epitomized the work of Hesychius, or whether they are part of the title of an already epitomized Hesychius used by Suidas. The second view is more generally held. ”