  We present measurements of the branching fractions of 3-prong and 5-prong tau
decay modes using a sample of 430 million tau lepton pairs, corresponding to an
integrated luminosity of 468 fb-1, collected with the BaBar detector at the
PEP-II asymmetric energy e+e- storage rings. The \tau- --> (3\pi)- \eta \nu,
\tau- --> (3\pi)- \omega \nu, and \tau- --> \pi- f_1(1285)\nu, branching
fractions are presented as well as a new limit on the branching fraction of the
isospin-forbidden, second-class current, \tau- --> \pi-\eta'(958)\nu, decay. We
find no evidence for charged kaons in these decay modes and place the first
upper limits on their branching fractions.
