  We study corners and fundamental corners of the irreducible representations
of the groups G=Spin(n,1) that are not elementary, i.e. that are equivalent to
subquotients of reducible nonunitary principal series representations. For even
n we obtain results in a way analogous to the results in [10] for the groups
SU(n,1). Especially, we again get a bijection between the nonelementary part
$\hat{G}^0$ of the unitary dual $\hat{G}$ and the unitary dual $\hat{K}.$ In
the case of odd n we get a bijection between $\hat{G}^0$ and a tru subset of
$\hat{K}.$
