  Direct loading of lanthanide atoms into magneto-optical traps (MOTs) from a
very slow cryogenic buffer gas beam source is achieved, without the need for
laser slowing. The beam source has an average forward velocity of 60-70\,m/s
and a velocity half-width of ~35 m/s, which allows for direct MOT loading of
Yb, Tm, Er and Ho. Residual helium background gas originating from the beam
results in a maximum trap lifetime of about 80 ms (with Yb). The addition of a
single-frequency slowing laser applied to the Yb in the buffer gas beam
increases the number of trapped Yb atoms to 1.3(0.7) x 10^8 with a loading rate
of 2.0(1.0) x 10^10 atoms/s. Decay to metastable states is observed for all
trapped species and decay rates are measured. Extension of this approach to the
loading of molecules into a MOT is discussed.
