We have used deep ACS/WFC images of M33 to check nature of extended
objects detected by the ground based survey of Zloczewski et al.
(2008). A total of 24 candidates turned out to be genuine compact
stellar clusters. In addition we detected 91 new clusters. Equatorial
coordinates, integrated magnitudes and angular sizes are listed for
all 115 objects. Fourty-two clusters have sufficiently red colors to
be candidates for old globulars. For four clusters we extracted
resolved stellar photometry. Object 33-3-018 located in the outer disk
of M33 turned out to be a young cluster with an age estimated at
200-350 Myr. Cluster ZK-90 has an age of 3-5 Gyr. The remaining two
clusters have intermediate ages ranging from one to a few Gyr.