We photometrically observed four southern dwarf novae in outburst ( NSV 10934 , MM Sco , AB Nor and CAL 86 ) .
NSV 10934 was confirmed to be an SU UMa-type dwarf nova with a mean superhump period of 0.07478 ( 1 ) d. This star also showed transient appearance of quasi-periodic oscillations ( QPOs ) during the final growing stage of the superhumps .
Combined with the recent theoretical interpretation and with the rather unusual rapid terminal fading of normal outbursts , NSV 10934 may be a candidate intermediate polar showing SU UMa-type properties .
The mean superhump periods of MM Sco and AB Nor were determined to be 0.06136 ( 4 ) d and 0.08438 ( 2 ) d , respectively .
We suggest that AB Nor belongs to a rather rare class of long-period SU UMa-type dwarf novae with low mass-transfer rates .
We also observed an outburst of the suspected SU UMa-type dwarf nova CAL 86 .
We identified this outburst as a normal outburst and determined the mean decline rate of 1.1 mag d ^ { -1 } .