New vertex-early kilometric arcs have been found to be associated with the dominant smooth high-frequency radio emission from Uranus. These arc features had vertices at about 300 kHz and bandwidths of about 200 kHz. Based on the fact that they exhibited a different temporal occurrence, spectral character, source location, and beaming pattern compared to the more dominant smooth component, it is concluded that they are a separate and indepenent radio component, different from those previously identified for this planet. ¿American Geophysical Union 1990