  We have quantitatively reanalyzed the inclusive charmed-baryon decays. New
ingredients are the Voloshin preasymptotic effects in semileptonic decays and
the Cabibbo-subleading contributions to both semileptonic and nonleptonic
decays. It has been found that the Cabbibo-subleading Voloshin contribution
essentially improves the theoretical semileptonic branching ratio of
$\Lambda_c^{+}$, in agreement with experiment. The semileptonic branching
ratios for $\Xi_c^{+}$ and $\Omega_c^{0}$ are found to be large, i.e., of the
order of 20%. The lifetimes hierarchy is in a good qualitative and even
quantitative agreement with experiment except for the $\Xi_c^{+}$ lifetime,
which is somewhat smaller than the experimental value. Future measurements,
especially measurements of the semileptonic branching ratios for
$\Omega_c^{0}$, $\Xi_c^{+}$ and $\Xi_c^{0}$ should be decisive for the check of
this approach.
