  We have obtained optical imaging with the Canada France Hawaii Telescope
(CFHT) of 21 2MASS-selected QSOs of redshift greater than 0.3. This paper
complements the sample of lower redshift 2MASS QSOs previously published. The
QSOs have higher overall and nuclear luminosity, bluer colours, and higher
ratio of nuclear to host flux than the lower redshift sample. From these and
other properties, we argue that the sample is consistent with the emergence of
the AGN from dusty starbursts following major tidal interactions between
galaxies.
