  We present a catalogue with the properties of all the bursts detected and
localized by the IBIS instrument onboard the INTEGRAL satellite from November
2002 to September 2008. The sample is composed of 56 bursts, corresponding to a
rate of ~ 0.8 GRB per month. Thanks to the performances of the INTEGRAL Burst
Alert System, 50% of the IBIS GRBs have detected afterglows, while 5% have
redshift measurements. A spectral analysis of the 43 bursts in the INTEGRAL
public archive has been carried out using the most recent software and
calibration, deriving an updated, homogeneous and accurate catalogue with the
spectral features of the sample. When possible also a time-resolved spectral
analysis has been carried out. The GRBs in the sample have 20-200 keV fluences
in the range 5 x 1E-8 --2.5 x 1E-4 erg cm-2, and peak fluxes in the range 0.11
- 56 ph cm-2 s-1. While most of the spectra are well fitted by a power law with
photon index ~ 1.6, we found that 9 bursts are better described by a cut-off
power law, resulting in Ep values in the range 35--190 keV. Altough these
results are comparable with those obtained with BAT onboard Swift, there is a
marginal evidence that ISGRI detects dimmer bursts than Swift/BAT. Using the
revised spectral parameters and an updated sky exposure map that takes into
account also the effects of the GRB trigger efficiency, we strengthen the
evidence for a spatial correlation with the super galactic plane of the faint
bursts with long spectral lag (Foley et al.,2008).
