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An updated catalogue of 76 galaxies with direct supermassive black hole massmeasurements (M_bh) plus, when available, their host bulge's central velocitydispersion (sigma_0) is provided. Fifty of these mass measurements areconsidered reliable, while the others remain somewhat uncertain at this time.An additional eight stellar systems, including one stellar cluster and threeglobular clusters, are listed as hosting potential intermediate mass blackholes < 10^6 M_solar.  With this larger data set, the demographics within the M_bh-sigma_0 diagramare briefly explored. Many barred galaxies are shown to be offset from theM_bh-sigma_0 relation defined by the non-barred galaxies, in the sense thattheir velocity dispersions are too high. Furthermore, including 88 AGN withblack hole mass estimates from reverberation mapping studies, we speculate thatbarred AGN may follow this same general trend. We also show that some AGN withsigma_0 < 100 km/s tend to reside up to 0.6 dex above the "barless"M_bh-sigma_0 relation. Finally, it is shown that ``core galaxies'' appear notto define an additional subdivision of the M_bh-sigma_0 diagram, althoughimproved methods for measuring sigma_0-values will be valuable.

Populating the galaxy velocity dispersion - supermassive black hole mass diagram: A catalogue of (M_bh, sigma) values