  We report the discovery of $\Xi_{c}(3055)^{0}$, observed by its decay into
the final state $\Lambda D^{0}$, and present the first observation and evidence
of the decays of $\Xi_c(3055)^{+}$ and $\Xi_c(3080)^{+}$ into $\Lambda D^{+}$.
We also perform a combined analysis of the $\Lambda D^{+}$ with the
$\Sigma_{c}^{++}K^{-}$ and $\Sigma_{c}^{\ast ++}K^{-}$ decay modes to measure
the ratios of branching fractions, masses and widths with improved accuracy. We
measure the ratios of branching fractions ${\cal B}(\Xi_{c}(3055)^{+} \to
\Lambda D^{+})/{\cal B}(\Xi_{c}(3055)^{+} \to
\Sigma_{c}^{++}K^{-})=5.09\pm1.01\pm0.76$, ${\cal B}(\Xi_{c}(3080)^{+} \to
\Lambda D^{+})/{\cal B}(\Xi_{c}(3080)^{+} \to
\Sigma_{c}^{++}K^{-})=1.29\pm0.30\pm0.15$, and ${\cal B}(\Xi_{c}(3080)^{+} \to
\Sigma_{c}^{\ast ++}K^{-})/{\cal B}(\Xi_{c}(3080)^{+} \to
\Sigma_{c}^{++}K^{-})=1.07\pm0.27\pm0.01$, where the uncertainties are
statistical and systematic. The analysis is performed using a 980 fb$^{-1}$
data sample collected with the Belle detector at the KEKB asymmetric-energy
$e^{+}e^{-}$ collider.
