Zeus and Agasthenes, Hyperbios, and Ephialtes: Louvre E 732 (Fig. 111). Zeus and Porphyrion: Berlin 2531. Hera and Harpolykos: Louvre E 732. Hera and Rhoitos (miswritten Phoitos): Berlin 2531. Poseidon and Polybotes: Louvre E 732; Berlin 2531 = Fig. 112. Poseidon and Ephialtes: Reinach, ii. 188. Apollo and Ephialtes: Berlin 2531. Artemis and Otos: Reinach, ii. 164. Artemis and Aigaion: Berlin 2531. Hephaistos and Euryalos: B.M. E 47. Hephaistos and Klytios: Berlin 2293. Athena and Enkelados: B.M. B 252; Louvre E 732; _Él. Cér._ i. 8. Ares and Mimas: Berlin 2531; B.M. B 617. Hermes and Hippolytos: Berlin 2293. Hermes and Polybios (?): Louvre E 732. Dionysos and Eurymedon: _Bull. de Corr. Hell._ xx. pl. 7. Athena with arm of Akratos: Berlin 2957 = _Él. Cér._ i. 88. Death of Otos (supposed): Bibl. Nat. 299 = Reinach, ii. 255. Among scenes supposed to take place in Olympos, the most important is the =Birth of Athena= from the head of Zeus.[44] Usually she is represented as a diminutive figure actually emerging from his head, but in one or two instances she stands before him fully developed,[45] as was probably the case in the centre of the east pediment of the Parthenon. This subject is commoner on B.F. vases, and does not appear at all after the middle of the fifth century.[46] In most cases several of the Olympian deities are spectators of the scene; sometimes Hephaistos wields his axe or runs away in terror at the result of his operations[47]; in others the Eileithyiae or goddesses of child-birth lend their assistance.[48] On a R.F. vase in the Bibliothèque Nationale Athena flies out backwards from Zeus’ head.[49] In accordance with a principle already discussed (Vol. I. p. 378), the composition or “type” of this subject is sometimes adopted on B.F. vases for other groups of figures, where the absence of Athena shows clearly that the birth scene is not intended, and no particular meaning can be assigned to the composition.[50] Representations of the =Marriage of Zeus and Hera= cannot be pointed to with certainty in vase-paintings. On B.F. vases we sometimes see a bridal pair in a chariot accompanied by various deities, or figures with the attributes of divinities[51]; but the chief figures are not in any way characterised as such, and it is better to regard these scenes as idealisations of ordinary marriage processions. On the other hand, there are undoubted representations of Zeus and Hera enthroned among the Olympian deities or partaking of a banquet.[52] [Illustration: FIG. 113. THE BIRTH OF ATHENA (BRIT. MUS. B 244).]