  We report the identification of 61.45 d^-1 (711.2 mu Hz) oscillations, with
amplitudes of 62.6-mu mag, in KIC 4768731 (HD 225914) using Kepler photometry.
This relatively bright (V=9.17) chemically peculiar star with spectral type A5
Vp SrCr(Eu) has previously been found to exhibit rotational modulation with a
period of 5.21 d. Fourier analysis reveals a simple dipole pulsator with an
amplitude that has remained stable over a 4-yr time span, but with a frequency
that is variable. Analysis of high-resolution spectra yields stellar parameters
of T_eff = 8100 +/- 200 K, log g = 4.0 +/- 0.2, [Fe/H] = +0.31 +/- 0.24 and v
sin i = 14.8 +/- 1.6 km/s. Line profile variations caused by rotation are also
evident. Lines of Sr, Cr, Eu, Mg and Si are strongest when the star is
brightest, while Y and Ba vary in anti-phase with the other elements. The
abundances of rare earth elements are only modestly enhanced compared to other
roAp stars of similar T_eff and log g. Radial velocities in the literature
suggest a significant change over the past 30 yr, but the radial velocities
presented here show no significant change over a period of 4 yr.
