Optical and X-ray images of the cluster conspicuous in Fig. 20 at redshift =0.24 and richness =77, as not detected by Xamin. Marginal X-ray emission is present for this object located close to the edge of the XMM FOV, hence not entirely covered by the three detectors (sharp discontinuities are visible on the image); this cluster was later removed from the stacking analysis of Fig. 13. Centring and scale are the same for both images.