  We attempt to explain the ${\bar \Lambda}/\bar p$ ratios measured in heavy
ion collisions at $11.6~{\rm A\cdot GeV}/c$ beam momentum within a hadronic
framework. This ratio is enhanced relative to corresponding ratios in $pp$
collisions, and is large when compared with thermal fits to heavy ion data.
Using a detailed cascade calculation, we show that different annihilation
cross--sections of $\bar \Lambda$'s and $\bar p$'s, and the net conversion of
$\bar p$'s to $\bar \Lambda$'s, do not account for the enhancement in central
collisions. For larger impact parameters, however, hadronic mechanisms may well
suffice to produce the observed enhancement. Uncertainties in elementary
cross--sections and formation times are considered.
