  By using the Cowling approximation, quasi-radial modes of rotating general
relativistic stars are computed along equilibrium sequences from non-rotating
to maximally rotating models. The eigenfrequencies of these modes are
decreasing functions of the rotational frequency. The eigenfrequency curve of
each mode as a function of the rotational frequency has discontinuities, which
arise from the avoided crossing with other curves of axisymmetric modes.
