Cf. Acta Arch. cap. lii.:  “A certain Parcus, however, a prophet, and Labdacus, son of Mithras, charged him with falsehood.”  On the name Parcus and Labdacus, see Dict. Chr. Biogr., “Barcabbas,” and on the Magian worship of the Sun-god Mithras, see Rawlinson (Herodot. Vol. I. p. 426).