Whether Ormuzd and Ahriman played any important part in the Roman worship of Mithras is also doubtful. With regard to the first-named, both Greeks and Romans knew him well and identified him unhesitatingly with Zeus and Jupiter[820]. Hence we should expect to find him, if represented at all on the Mithraic sculptures, with the well-known features, the thunderbolt, and the eagle, which long before this time had become the conventional attributes of the Roman as well as of the Homeric father of gods and men. We are not entirely disappointed, for we find in a bas-relief formerly in a chapel of Mithras at Sissek (the ancient Sissia in Pannonia) and now in the Museum at Agram, the bull-slaying scene in which Mithras figures and which will be presently described, surmounted by an arch on which is ranged Jupiter seated on his throne, grasping the thunderbolt, wielding the sceptre, and occupying the place of honour in a group of gods among whom we may distinguish Mars and Mercury[821]. In another bas-relief of the same scene, now at the Rudolfinum in Klagenfurt, he is depicted in a similar position in an assembly of the gods, which although much mutilated seems to show Zeus or Jupiter in the centre with Hera or Juno by his side[822]. But the most conclusive of these monuments is the great bas-relief found at Osterburken in the Odenwald, wherein the arch surmounting the usual bull-slaying scene contains an assembly of twelve gods with Zeus in the centre armed with thunderbolt and sceptre, while around him are grouped Apollo, Ares, Heracles, Hera, Athena, Aphrodite, Nike, Poseidon, Artemis, Hades, and perhaps Persephone[823]. When by the side of these we put the many inscriptions left by the legionaries to “the holy gods of the fatherland, to Jupiter best and greatest, and to the Unconquered One”; to “Jupiter best and greatest, and to the divine Sun, the Unconquered Sun,” and other well-known names of Mithras, there can be no doubt that his worshippers used to adore him together with the head of the Roman Pantheon, and that they considered Mithras in some way the subordinate of or inferior to Jupiter[824]. Yet there is nothing to show that the Mithraists as such identified in any way this Jupiter Optimus Maximus with the Persian Ahura Mazda, Oromasdes, or Ormuzd, or that they ever knew him by any of these outlandish names.