  We evaluate exclusive semileptonic decays of ground-state spin-1/2 doubly
heavy charmed baryons driven by a $c\to s,d$ transition at the quark level. Our
results for the form factors are consistent with heavy quark spin symmetry
constraints which are valid in the limit of an infinitely massive charm quark
and near zero recoil. Only a few exclusive semileptonic decay channels have
been theoretically analyzed before. For those cases we find that our results
are in a reasonable agreement with previous calculations.
