Résumé : In about 30 000 identified events produced in K+p reactions at incident momenta 3.0, 3.5 and 5.0 GeV/c we have searched for the production of Z*'s. i.e. S = +1, T = 0 or 1 baryonic resonances. No indication has been found in the examination of the various available production reactions of Z* decaying with visible modes. Upper limits for the corresponding cross-sections are generally less than 30 μb at 3.0 and 3.5 GeV/c. 10 μb at 5.0 GeV/c. Summing for a given production reaction over all possible Z* decay modes. i.e. performing a missing mass type of analysis, does not revel any further evidence. © 1968.