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$\begin{figure} \includegraphics[width=13.4cm,clip]{7513fig1.eps} \end{figure}$ Figure 1: DSS images centred on the putative host galaxies ( left). The small black squares correspond to a one square arcmin centred on the ULX candidates analyzed in this paper. These regions are expanded on figures to the right. The arrows identify the optical counterpart of the X-ray sources. Small circles are centred on the nominal X-ray position and have radius of 5 and 1 arcsec for ROSAT and Chandra observations respectively. North is up and east to the left.
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In the text

$\begin{figure} \includegraphics[width=11.5cm,clip]{7513fig2.eps} \end{figure}$ Figure 2: Optical spectra of the counterparts of ULX sources. The y-axis is the flux in arbitrary units (counts per angstrom). Broad absorption features (obvious in most of the spectra) centered at $\sim$ 6900 and $\sim$ 7600 Å are telluric A and B bands respectively of molecular oxygen.
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In the text

$\begin{figure} \includegraphics[width=11.5cm,clip]{7513fig2.eps} \end{figure}$	Figure 2: Optical spectra of the counterparts of ULX sources. The y-axis is the flux in arbitrary units (counts per angstrom). Broad absorption features (obvious in most of the spectra) centered at $\sim$ 6900 and $\sim$ 7600 Å are telluric A and B bands respectively of molecular oxygen.
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