Résumé : Production of Σ*- and Ξ*- antibaryon resonances in K+ fragmentation processes is observed by studying inclusive λπ+ and λK+ invariant mass distributions in 32 GeV/c K+p interactions. A possible Ξ*- state is reported with a mass of 2137±4 MeV and width ≲20 MeV. Signals are observed at λK+ masses of 2240, 2380 and 2540 MeV, which correspond to previously observed Ξ*- states. Evidence is presented for a low-mass λp enhancement around 2145 MeV. © 1979.