  In this paper we continue the study of representation theory of formal
distribution Lie superalgebras initiated in q-alg/9706030. We study finite
Verma-type conformal modules over the N=2, N=3 and the two N=4 superconformal
algebras and also find explicitly all singular vectors in these modules. From
our analysis of these modules we obtain a complete list of finite irreducible
conformal modules over the N=2, N=3 and the two N=4 superconformal algebras.
