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We present integrated photometry and color-magnitude diagrams (CMDs) for 24star clusters in M33, of which 12 were previously uncataloged. These resultsare based on Advanced Camera for Surveys observations from the Hubble SpaceTelescope of two fields in M33. Our integrated V magnitudes and V-I colors forthe previously identified objects are in good agreement with publishedphotometry. We are able to estimate ages for 21 of these clusters usingfeatures in the CMDs, including isochrone fitting to the main sequence turnoffsfor 17 of the clusters. Comparisons of these ages with the clusters' integratedcolors and magnitudes suggest that simple stellar population models performreasonably well in predicting these properties.

Newly Identified Star Clusters in M33. I. Integrated Photometry and Color-Magnitude Diagrams