wears a cloak or tunic. Achilles is always armed and armoured. Occasionally, as on the vase picture at , or the fresco from the Tomb of the Bulls shown at the head of this article, either Troilus or Polyxena is absent, indicating how the ambush is linked to each of their stories. In the earliest definitely identified version of this scene, (a Corinthian vase c.580BC), Troilus is bearded and Priam is also present. Both these features are unusual. More common is a bird sitting on the fountain; normally a raven, symbol of Apollo and his prophetic powers and thus a final warning to Troilus of his doom; sometimes a cock, a common love gift suggesting that Achilles attempted to seduce Troilus. In some versions, for example an Attic amphora in the Museum of Fine Arts, Boston dating from c.530BC (seen here ) Troilus has a dog running with him. On one Etruscan vase from the 6th century BC, doves are flying from Achilles to Troilus, suggestive of the love gift in Servius. The fountain itself is conventionally decorated with a lion motif. The earliest identified version of the pursuit or chase is from the third quarter of the 7th century BC. Next chronologically is the best known version on the François Vase by Kleitias. The number of characters shown on pottery scenes varies with the size and shape of the space available. The François Vase is decorated with several scenes in long narrow strips. This means that the Troilus frieze is heavily populated. In the centre, (which can be seen at the Perseus Project at ,) is the fleeing Troilus, riding one horse with the reins of the other in his hand. Below them is the vase—which Polyxena (partially missing), who is ahead of him, has dropped. Achilles is largely missing but it is clear that he is armoured. They are running towards Troy where Antenor gestures towards Priam. Hector and Polites, brothers of Troilus, emerge from the city walls in the hope of saving Troilus. Behind Achilles are a number of deities, Athena, Thetis (Achilles' mother), Hermes, and Apollo (just arriving). Two Trojans are also present, the woman gesturing to draw the attention of a youth filling his vase. As the deities appear only in pictorial versions of the scene, their role is subject to interpretation. Boitani sees Athena as urging Achilles on and Thetis as worried by the