is the name attached to a rhetorical treatise in two books, entitled , which appears to have been originally an abridgement of a work (σχῆμα διανοίας καὶ λέξεως), by Gorgias of Athens, one of the preceptors of young M. Cicero, but which has evidently undergone many changes in the hands of those by whom it was used for the purposes of instruction. Its chief value is derived from the numerous translations which it contains of striking passages from the works of Greek orators now lost. At one time the author of this piece was believed to be the person spoken of by Quintilian as contemporary with himself; but the reading Tutilium has been substituted for Rutilium in the passage in question by the best editors, on the authority of good MSS. and of all the earlier impressions. Lupus is now generally supposed to have been the son of P. Rutilius Lupus, mentioned above.