  In a recent paper characters and superdimension formulas were investigated
for the class of representations with Dynkin labels $[0,\ldots,0,p]$ of the Lie
superalgebra $osp(m|n)$. Such representations are infinite-dimensional, and of
relevance in supergravity theories provided their superdimension is finite. We
have shown that the superdimension of such representations coincides with the
dimension of a $so(m-n)$ representation. In the present contribution, we
investigate how this $osp(m|n)\sim so(m-n)$ correspondence can be extended to
the class of $osp(2m|2n)$ representations with Dynkin labels
$[0,\ldots,0,q,p]$.
