  We present luminosity distributions for the X-ray sources detected with
XMM-Newton in the bulge and disk of the Andromeda Galaxy (M31). The disk is
clearly lacking the brighter sources which dominate X-ray emission from the
bulge. This is the first convincing evidence for a difference between bulge and
disk X-ray populations in M31. Our results are in good qualitative agreement
with the luminosity distributions for low- and high-mass X-ray binaries
recently obtained by Grimm et al.(2001) for our Galaxy. This confirms that
X-ray population of the disk of M31 is dominated by fainter HMXB sources, while
the bulge is populated with brighter LMXBs.
