[en] The authors have measured the anti pp total cross sections at 24 incident momenta from 373 to 734 MeV/c and observed an enhancement in the cross section at around 490 MeV/c. A fit to a Breit-Wigner form superposed on a smoothly decreasing background gives the mass of this enhancement to be 1935.5+-1.0 MeV/c2 with a width of 2.8+-1.4 MeV/c2. The resonant total cross section is 14.5+-3.9 mb. (Auth.)