Evidence is presented for a new Jovian radio emission component in the frequency range from ~40 to ~200 kHz observed during the Ulysses-Jupiter outbound pass at high Jovian southern latitudes along the dusk terminator. The new radio component (referred to as sKOM) occurs in the same frequency range as the observed broadband kilometric (bKOM) radio emission, but its characteristics are distinctly different. It has the opposite polarization, is about 100 times weaker, and has a characteristically smooth intensity profile. It is consistently observed in the longitudinal range from ~120¿ to ~230¿ central meridian longitude, where the intermittent bKOM is often absent, and is found to originate in the Jovian magnetosphere about 5RJ from Jupiter and at a latitude of about 35¿S. Its observed right-hand circular polarization suggests that it is generated in the O mode in the source region. ¿ American Geophysical Union 1994