  The spectrum of $\Lambda$ and $\Sigma$ excitations is reviewed taking into
account (nearly) all hyperon resonances which were seen in early analyses or in
one of the recent partial-wave analyses. The spectrum is compared with the old
Isgur-Karl model and the Bonn model. These models allows us to discuss the
SU(3) structure of the observed resonances. The SU(3) decomposition is compared
with SU(6) relations between the different decay modes. Seven $\Lambda$ states
are proposed to be classified as SU(3) singlet states. The hyperon spectrum is
compared with the spectrum of $N$ and $\Delta$ resonances.
