  The splittings between the spin 1/2 and spin 3/2 iso-singlet baryons
Lambda_s(1405) and Lambda_s(1520), and their charmed counterparts
Lambda_c(2593) and Lambda_c(2625), have been a theoretical conundrum. Here we
investigate the possibility that the QCD binding of color octets comprised of
three quarks in a flavor singlet configuration is stronger than previously
envisaged, allowing these states to be interpreted as hybrids consisting of
three quarks plus a valence gluon (udsg) and (udcg). A fit of their mass
separation allows the mass prediction of the strange and charmed flavor octet
and decuplet hybrid baryons and the prediction of the mass separation of the
beauty hybrids. Such hybrid states come in parity-doubled pairs with the even
parity state lighter by about 300 MeV. Existing data accommodates either parity
assignment for the observed states and the existence of the required unobserved
partners at either higher or lower mass. We discuss difficulties with and
strategies for observing the other states under the two cases. A corollary of
the strong-binding-in-flavor-singlet-channel hypothesis is that the H-dibaryon
may be very long lived or stable with m_H ~< 2 GeV.
