  Recently LHCb reported the discovery of four extremely narrow excited
$\Omega_b$ baryons decaying into $\Xi_b^0 K^-$. We interpret these baryons as
bound states of a $b$-quark and a $P$-wave $ss$-diquark. For such a system
there are exactly five possible combinations of spin and orbital angular
momentum. We predict two of spin 1/2, two of spin 3/2, and one of spin 5/2, all
with negative parity. We favor identifying the observed states as those those
with spins 1/2 and 3/2, and give a range of predicted masses for the one with
spin 5/2. We update earlier predictions for these states based on the five
narrow excited $\Omega_c$ states reported by LHCb. An alternative picture of
the states in which one of $J=1/2$ is extremely wide and hence not seen by LHCb
is discussed.
