  We report the results of a search for $B^{-} \to \jpsi \Lambda \pbar$ based
on a data set of 78 fb$^{-1}$ data collected at the $\Upsilon(4S)$ resonance
with the Belle detector at the KEKB asymmetric $e^+ e^-$ collider. No
substantial signal is found, and we set the branching fraction upper limit
${\cal B}(B^{-} \to \jpsi \Lambda \pbar) < 4.1 \times 10^{-5}$ at 90%
confidence level.
