The hadronic lineshape of the Z has been analysed for evidence of sign
als of new, narrow vector resonances in the Z-mass range. The producti
on rate of such resonances would be enhanced due to mixing with the Z.
No evidence for new states is found, and it is thus possible to exclu
de, at the 95% confidence level, a quarkonium state in the mass range
from 87.7 to 94.7 GeV.