SUMMARY: An unknown Byzantine lexicon is preserved in a manuscript datable to the end of
the 12th century (Milano, Biblioteca Ambrosiana, C 222 inf. [gr. 886], ff. 207r-208v). The
author appears to have been working in Constantinople during the second half of the 12th century
and shows personal acquaintance with Ioannes Tzetzes. The lexicon includes 751 glosses.
A few lacunae in the text suggest that schedae could have been used to compile the glossary.
Several sources are identifiable, the most frequently found are Aelius Herodianus, Epimerismoi,
and Lexicon Tittmannianum. A selection of unusual and rare glosses is edited and discussed.