  We present a catalog of point gamma-ray sources detected by the EGRET
detector aboard the Compton Gamma Ray Observatory. We have used the whole
gamma-ray dataset of reprocessed photons at energies above 100 MeV together
with new Galactic interstellar emission models based on recent CO, HI, dark
gas, and interstellar radiation field data. Two different assumptions have been
used for the cosmic-ray distribution in the Galaxy to explore the resulting
systematic uncertainties in source detection and characterization. We have used
the same 2-dimensional maximum-likelihood detection method as for the 3rd EGRET
catalogue. The revised catalogue lists 188 sources, 14 of which are marked as
confused, compared to the 271 entries of the 3rd EGRET (3EG) catalogue. 107
former sources have not been confirmed because of the additional structure in
the interstellar background. The vast majority of them were unidentified and
marked as possibly extended or confused in the 3EG catalogue. In particular, we
do not confirm most of the 3EG sources associated with the local clouds of the
Gould Belt. Alternatively, we find 30 new sources with no 3EG counterpart. The
new error circles for the confirmed 3EG sources largely overlap the previous
ones, but several counterparts of particular interest that had been discussed
in the litterature, such as Sgr A*, radiogalaxies and several microquasars are
now found outside the error circles. We have cross-correlated the source
positions with a large number of radio pulsars, pulsar wind nebulae, supernova
remnants, OB associations, blazars and flat radiosources and we find a
surprising large number of sources (87) at all latitudes with no counterpart
among the potential gamma-ray emitters.
