The HII regions of M33. II. A photometric catalog of 1272 newly identifiedemission regions

We have identified a total of 1272 newly recognized emission regions in M33 . Combined with the previously cataloged total of 1066 H II regions and sup ernova remnants, this brings M33's total to 2338 emission regions. This pap er provides photometry of the new objects in H alpha, which is combined wit h data from previous catalogs to produce a global H II region luminosity fu nction (corrected for incompleteness) that reaches a faint luminosity limit of 2 x 10(34) ergs s(-1) and shows a broad maximum with a peak frequency a t luminosities of 6 x 10(35) ergs s(-1). We also plot the H II region size distribution and comment on unusual morphologies.