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We report the identification of 61.45 d^-1 (711.2 mu Hz) oscillations, withamplitudes 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 A5Vp SrCr(Eu) has previously been found to exhibit rotational modulation with aperiod of 5.21 d. Fourier analysis reveals a simple dipole pulsator with anamplitude that has remained stable over a 4-yr time span, but with a frequencythat is variable. Analysis of high-resolution spectra yields stellar parametersof T_eff = 8100 +/- 200 K, log g = 4.0 +/- 0.2, [Fe/H] = +0.31 +/- 0.24 and vsin i = 14.8 +/- 1.6 km/s. Line profile variations caused by rotation are alsoevident. Lines of Sr, Cr, Eu, Mg and Si are strongest when the star isbrightest, while Y and Ba vary in anti-phase with the other elements. Theabundances of rare earth elements are only modestly enhanced compared to otherroAp stars of similar T_eff and log g. Radial velocities in the literaturesuggest a significant change over the past 30 yr, but the radial velocitiespresented here show no significant change over a period of 4 yr.

KIC 4768731: a bright long-period roAp star in the Kepler Field