FLACCUS, CAIUS VALERIUS, an ancient Latin poet, of whom we have very imperfect accounts remaining. He wrote a poem on the Argonautic expedition; of which, however, he did not live to finish the eighth book, dying at about 30 years of age. John Baptiste Pius, an Italian poet, completed the eighth book of the Argonautics; and added two more from the fourth of Apollonius; which supplement was first added to Aldus's edition in 1523.