  We discuss coherent scattering between supersymmetric neutralinos and nuclei
via an effective neutralino-gluon interaction. We identify two new classes of
diagrams which are not treated in the existing literature. These occur at the
same order of perturbation theory as the previously considered diagrams. The
new contributions can be numerically important, and can even dominate the total
amplitude. This affects the clculation fo event rates in experiments searching
for direct or indirect evidence of cosmic relic neutralinos.
