  Recent data on inclusive B decays into charmonium states taken by the CLEO
collaboration suggest that a sizeable fraction of the nonleptonic decays may
consist of the $J/\psi \Lambda \overline p$ three body final state,
corresponding to a distinct enhancement in the inclusive $J/\psi$ momentum
distribution. The kinematical boundary of this structure corresponds to the
case where the $J/\psi$ recoils nearly monoenergetically in the B rest system
against a partner having mass of $\simeq$ 2 GeV. This may allow the observation
of a $\Lambda-\overline p $ bound state near or just below threshold; i.e.,
strange baryonium, even if the production rate is small.
  Using a phase space approach to the B meson decay, we study the $J/\psi$
momentum distribution and the effect of baryonium formation. We also discuss
the possible observation of pentaquarks and hadronically-bound $J/\psi$ by the
observation of monoenergetic baryons in these decays.
