  In a search for cataclysmic variables in the Calan-Tololo Survey we have
detected 21 systems, 16 of them previously unknown. In this paper we present
detailed time-series photometry for those six confirmed cataclysmic variables
that show periodic variability in their light curves. Four of them turned out
to be eclipsing systems, while the remaining two show a modulation consisting
of two humps. All derived periods are below, or, in one case, just at the lower
edge of the period gap.
