  General formulas for the scalar modes a_i and a^i_D in the Seiberg-Witten
SU(N) setting are derived in the cases with and without massive
hypermultiplets. Subsequently these formulas are applied in a study of the
SU(3) Argyres-Douglas point. We use this example to study the question, whether
the scalar modes admit an interpretation in terms of BPS mass states everywhere
in moduli space. The paper collects, in an appendix, various facts on the
function Lauricella F_D^(n), which naturally appears in the derived formulas.
