Rhet gre 1358a2-4[1.2.20] τῶν δὲ ἐνθυμημάτων μεγίστη διαφορὰ καὶ (3) μάλιστα λεληθυῖα σχεδὸν παρὰ πᾶσίν ἐστιν ἥπερ καὶ περὶ τὴν (4) διαλεκτικὴν μέθοδον τῶν συλλογισμῶν·
Rhys Roberts 1924 engThere is an important distinction between two sorts of enthymemes that has been wholly overlooked by almost everybody — one that also subsists between the syllogisms treated of in dialectic.
http://www2.hf.uio.no/common/apps/permlink/permlink.php?app=polyglotta&context=record&uid=c847d48f-1d51-11e7-ba66-0050569f23b2