The vase which is the subject of the present memoir is a pyxis or small round box of a light yellow clay with a smooth surface, decorated with designs in a blackish brown, which is here and there varied with a patch of purple laid upon the black, or with a detail occasionally incised. It was acquired by the British Museum in 1865, and forms one of a set of eighteen which were ‘guaranteed’ as having been found at Phaleron near Athens.The lid is decorated with a circular frieze of animals, representing five lions or panthers; the most important representation, however, is that upon the body of the vase, which is encircled with a single frieze of figures, consisting of four lions, a bull (recognisable by the shape of its hoof and its horn), and a group which is obviously a rendering of the well-known myth of Herakles and Geryon—beside Geryon is a further group of three bulls.