obtained at the KPNO 0.9-m telescope. The earlier data were originally presented by Walterbos & Braun (1992; hereafter WB92). The WB92 data consist of 19 fields, located in the NE half of M31, imaged through 27 ${\rm \AA}$ H$\alpha$ and \[\] filters, 75 ${\rm \AA}$ off-band continuum and broad-band B. Each field measured 6$\farcm$7 $\times$ 6$\farcm$7. Further details may be found in WB92.

The new data, covering 8 fields mostly on the SW side of M31, were obtained during the nights of 4-10 November 1997. The fields were imaged through a pair of 75 ${\rm \AA}$ H$\alpha$+\[\] and off-band, red-shifted H$\alpha$ filters having nearly identical bandpass shape, in addition to a blue (B-band) filter. A 75 ${\rm
\AA}$ filter had to be used since narrower filters were not available to cover the radial velocities on the SW side of M31. Three to 7 individual frames were obtained for each H$\alpha$+\[\], off-band, and B-band field. Total co-added exposure times for each H$\alpha$+\[\] and off-band field ranged from 2400 to 5400 s, and for the B-band fields from 180 to 690 s.

The images were obtained using a TI 2k $\times$ 2k CCD detector. Individual pixels measure 24 $\mu$m, which corresponds to 