This article deals with an unpublished Latin treatise on classical metre by Calvete de Estrella, De uersuum genere epitome, Salamanca 1586, which is kept on the National Library in Madrid, and also offers some observations about other works of this humanist and the Spanish scholarship of his time. The main sources of Calvete's treatise are identified by comparing several items of it with Jacob Micyllus' De re metrica liber I, and the some Greek technopaegnia in the edition of Theocritus by Henri Estienne.Proyecto DGICyT FFI2011-2963
