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We report the discovery of eclipses and the first orbital period measurementsfor four cataclysmic variables, plus the first orbital period measurements forone known eclipsing and two magnetic systems. SDSS J093537.46+161950.8 exhibits1-mag deep eclipses with a period of 92.245 min. SDSS J105754.25+275947.5 hasshort and deep eclipses and an orbital period of 90.44 min. Its light curve hasno trace of a bright spot and its spectrum is dominated by the white dwarfcomponent, suggesting a low mass accretion rate and a very low-mass and coolsecondary star. CSS J132536+210037 shows 1-mag deep eclipses each separated by89.821 min. SDSS J075653.11+085831.8 shows 2-mag deep eclipses on a period of197.154 min. CSS J112634-100210 is an eclipsing dwarf nova identified in theCatalina Real Time Transit Survey, for which we measure a period of 111.523min. SDSS J092122.84+203857.1 is a magnetic system with an orbital period of84.240 min; its light curve is a textbook example of cyclotron beaming. Aperiod of 158.72 min is found for the faint magnetic system SDSSJ132411.57+032050.4, whose orbital light variations are reminiscent of AM Her.Improved orbital period measurements are also given for three known SDSScataclysmic variables. We investigate the orbital period distribution andfraction of eclipsing systems within the SDSS sample and for all cataclysmicvariables with a known orbital period, with the finding that the fraction ofknown CVs which are eclipsing is not strongly dependent on the orbital period.

Orbital periods of cataclysmic variables identified by the SDSS. IX. NTT photometry of eight eclipsing and three magnetic systems