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We report the discovery of a new gravitationally lensed QSO, at a redshift z= 1.689, with four QSO components in a cross-shaped arrangement around a brightgalaxy. The maximum separation between images is 2.6 arcsec, enabling areliable decomposition of the system. Three of the QSO components have g =19.6, while component A is about 0.6 mag brighter. The four components havenearly identical colours, suggesting little if any dust extinction in theforeground galaxy. The lensing galaxy is prominent in the i band, weaker in rand not detected in g. Its spatial profile is that of an elliptical galaxy witha scale length of $\sim$ 12 kpc. Combining the measured colours and a massmodel for the lens, we estimate a most likely redshift range of 0.3 < z < 0.4.Predicted time delays between the components are $\la$ 10 days. The QSO showsevidence for variability, with total g band magnitudes of 17.89 and 17.71 fortwo epochs separated by $\sim 2$ months. However, the relative fluxes of thecomponents did not change, indicating that the variations are intrinsic to theQSO rather than induced by microlensing.Comment: 7 pages, submitted to Astronomy and Astrophysic

HE 0435-1223: A wide separation quadruple QSO and gravitational lens