We measured AC transport current losses in twisted multifilamentary Bi2223/Ag sheathed tapes subject to AC external longitudinal magnetic fields. The tapes specially made for the experiment have wider space between superconductor filaments than usual multifilamentary Bi/Ag sheathed tapes. The wide space suppresses superconductive bridgings between the superconductor filaments. The AC transport current losses were electrically measured. The losses almost followed the Norris elliptical model when tile direction of the external longitudinal field was in the opposite direction to that of the self longitudinal field which was produced by the transport current in the twisted multifilament tape. On the other hand, when the direction of the external longitudinal field was in the same direction as the self longitudinal field, the losses became much smaller than the Norris model if the amplitudes of the longitudinal field was optimized for that of the transport current.