  Aims: We present discovery observations of the new cataclysmic variable star
(CV) 1RXS J092737.4-191529, as well as spectra and photometry of SY Vol. The
selection technique that turned up these two CVs is described; it should be
efficient for finding dwarf novae with high outburst duty cycles. Methods: Two
very common observational features of CVs, namely optical variability and X-ray
emission, are combined to select targets for follow-up observations. Long-slit
spectra were taken to identify CVs in the sample. Results: Two out of three
objects selected in this way are CVs. One of these is the known dwarf nova SY
Vol, while the second system, 1RXS J092737.4-191529, is a new discovery. We
present medium resolution spectra, $UBVRI$ magnitudes, and high-speed
photometry for both these CVs. Rapid flickering in the light curve of 1RXS
J092737.4-191529 confirms the mass transferring binary nature of this object;
it is probably a dwarf nova that was in quiescence during our observations.
