  Stimulated by the observation of a new structure, named $\Lambda_{c}(2910)$,
in the $\Sigma_{c}(2455)^{0,++}\pi^{+,-}$ decay channel from B meson decay
process by the Belle Collaboration, and the similarity of the
$\Lambda_{c}(2910)/\Lambda_{c}(2940)$ and $P_{c}$ states, we investigate the
decay behavior of the $\Lambda_{c}(2910)$ and $\Lambda_{c}(2940)$ in the $N
D^{*}$ molecular frame with the possible $J^{P}$ quantum numbers to be
$1/2^{-}$ and $3/2^{-}$. We employ an effective Lagrangian approach to evaluate
the partial widths of $ND$, $\Sigma_{c}\pi$ and $\Sigma_{c}^{*}\pi$ channels.
The estimations in the present work indicate that the $J^P$ quantum numbers of
$\Lambda_{c}(2910)$ and $\Lambda_{c}(2940)$ are preferred to be $1/2^{-}$ and
$3/2^{-}$, respectively. From the present estimations, we also find the
branching ratio of $\Lambda_c(3/2) \to \Sigma_c^\ast \pi$ is much larger than
that of $\Lambda_c(1/2) \to \Sigma_c^\ast \pi$, thus $\Sigma_{c}^{*}\pi$ could
be a good channel to distinguish the $J^{P}$ quantum numbers of
$\Lambda_{c}(2910)$ and $\Lambda_{c}(2940)$. Therefore, we suggest to searching
for the structure in $\Sigma_{c}^{*}\pi$ invariant mass distribution in Belle
$\amalg$.
