We investigate the transport of plasma in the inner Jovian magnetosphere according to the corotating model of Hill et al. [1981>, emphasizing mathematical aspects of the theory. We employ a simplified but physically plausible boundary condition at the inner Io torus, representing a 5% density enhancement of S+ ions in an ''active sector'' that is fixed in Jovian (systems III) longitude. We first investigate the convection electric field pattern resulting from this longitudinal mass anomaly alone, and then generalize the theory to include the effects of Coriolis force and plasma acceleration. We find that even a small (~5%) longitudinal asymmetry of the inner torus produces a convection system capable of removing torus plasma from the magnetosphere on a time scale of order one month. ¿ American Geophysical Union 1990