Abstract
When did Livy write his history? How many books had it, and what did the lost ones cover? Such answers as can be given to these questions come almost entirely from the one extant summary, the Periochae. The manuscripts of the Periochae disagree, however, on a matter of considerable interest: out of a hundred or so, only three, supported by a lost fourth, have been cited as adding to the title Ex libro CXXI the subtitle qui editus post excessum Augusti dicitur. When the latest editor, P. Jal in the Collection Budé , declares himself unconvinced of its authenticity , he leaves the reader to decide whether authenticity means truth, authorial origin, or presence in the archetype; but whatever it means, seeds of suspicion have been sown