Three new progressions consisting of broad bands (full width at half max. .simeq. 130 meV) were obsd. in the absorption spectrum of NO trapped in an Ar matrix. A Wannier model fails to describe these transitions; they are identified as the mol. Rydberg transitions A2S+, C2P, and D2S+-X2P(v',0), blue shifted with respect to their gas-phase positions by .apprx.0.85 eV. [on SciFinder (R)]