The low-energy plasma analyzer on CRRES has detected significant fluxes of 10-eV to 30-keV electrons trapped on plasmaspheric field lines. On energy-versus-time spectrograms these electrons appear as banded structures that can span the 250 to <20 kV. Subsequent encounters with the lower-energy cloud on alternating CRRES orbits over the next 2 days showed a progressive, earthward movement of the electrons' inner boundary. Whistler and electron cyclotron harmonic emissions accompanied the most intense manifestations of cloud electrons. The simplest explanation of these measurements is that after initial injection, the Alfv¿n boundary moved outward, leaving the cloud electrons on closed drift paths. Subsequent fluctuations of the convective electric field penetrated the plasmasphere, transporting cloud elements. inward. The magnetic shell distribution of electron temperatures in one of the banded structures suggests that radiative energy losses may be comparable in magnitude to gains due to adiabatic compression. ¿ American Geophysical Union 1995