Fig. 10. ROSAT HRI contours overlayed on an H map of NGC 4258, kindly provided by Dutil & Roy (1999). The contours were calculated from the image presented in Fig. 2 and represent levels of 2, 3, 5, 7 and  cts s^-1 arcmin^{- 2} above the background. Point sources are marked according to Table 2 and Fig. 1, the position of the nucleus (Table 1 of Paper I) of the galaxy with a cross