A agitating and supplying device arranged in a powder developer cyclic path of a developing apparatus comprises a pairs of flanges, a plurality of first supplying members and a plurality of second supplying members, all supplying members being arranged between both of the flanges. By rotation of the agitating and supplying device, a developer is transferred while being agitated in the axial direction and the centrifugal direction thereof and supplied on the surface of a magnet sleeve roller.A mold for molding the agitating and supplying device, comprises a plurality of mold members opening in the radial direction with respect to the axis of the device, the number of said member being the same as those of the first supplying members. The flanges, the first supplying members, and parts of the second supplying members of the agitating and supplying device are molded integrally by the mold.