  We report here on the first detection at X-ray wavelengths of the Supernova
Remnant (SNR) G337.8-0.1, carried out with the XMM-Newton Observatory. Using
the X-ray observations, we studied the X-ray morphology of the remnant at
different energy ranges, analysed the spectral properties and investigated a
possible variable behavior. The SNR shows a diffuse filled-center structure in
the X-ray region with an absence of a compact source in its center. We find a
high column density of N_H > 6.9 * 10^{22} cm^{-2}, which supports a relatively
distant location (d > 7 kpc). The X-ray spectrum exhibits emission lines,
indicating that the X-ray emission has a thin thermal plasma origin, and is
well represented by a non-equilibrium ionization (NEI) plasma model. The X-ray
characteristics and well-known radio parameters show that G337.8-0.1 belongs to
the emerging class of mixed-morphology (MM) SNRs.
