Neutrino interactions in BEBC produce the D s (2536) charmed strange meson. The mass of this state is 2534.21.2 MeV. The production rate is 0.0110.005 per neutrino charged current interaction at a mean neutrino energy of 61 GeV. An earlier claim for another c s bound state near 2565 MeV, produced in neutrino interactions, is not supported.