Amongst the works attributed to Alcidamas is a short surviving speech called Odysseus against the Treachery of Palamedes. The speech is supposed to be a prosecution speech spoken by Odysseus against his old enemy, whom he accuses (falsely, according to the myth) of plotting to betray the Greek camp to the Trojans. A speech based on Greek myth fits the context of Alcidamas' generation and the generation of his teachers: from his own time, we think of Isocrates' speeches on Helen and Busiris and, perhaps more directly comparable, of the speeches attributed to Antisthenes for Ajax and Odysseus when claiming the armour of Achilles; from an earlier generation we recall the speeches under the name of Gorgias on Helen and in defence of Palamedes. Such similarities of genre have long since been noticed: it is surely no coincidence that the chief MSS which preserve the Odysseus speech attributed to Alcidamas are also the chief MSS for the two speeches of Gorgias. The attribution of the Odysseus to Alcidamas contained in these MSS is particularly important, for there are no ancient allusions to the work. Now, there is in Plato, Phaedrus 261 a reference to an 'Eleatic Palamedes': …. Soc.: But have you only heard of the manuals of rhetoric by Nestor and Odysseus, which they composed in their leisure at Troy, and have you never heard of the manuals of Palamedes? Phaed.: By Zeus, I have never heard of those of Nestor, unless you are making Gorgias into some sort of Nestor, or Thrasymachus and Theodorus into Odysseus…. Soc.: So do we not know that the Eleatic Palamedes speaks with art, so that the same things appear to the audience like and unalike, and one and many, and still and moving? and Quintilian 3.1.10 explains this as reference to Alcidamas: Thrasymachus Chalcedonius cum hoc et Prodicus Cius et Abderites Protagoras, a quo decem milibus denariorum didicisse artem, quam edidit, Euathlus dicitur, et Hippias Elius, et, quem Palameden Plato appellat, Alcidamas Elaites. 638 * Earlier versions of this paper were delivered to audiences in Dunedin, Christchurch and Perth. My sincere thanks go to those audiences (and to CQ's referee) for their comments, and also to the Department of Classics at the University of Canterbury for their hospitality while I refined these ideas during some study leave spent with them in early 2005.