  The X-ray selected BL Lac PKS 2155-304 has been observed using the University
of Durham Mark 6 very high energy gamma ray telescope during 1998. We find no
evidence for TeV emission during these recent observations when the X-ray flux
was observed to be low. We have reconsidered our measurements made in 1997
November when PKS 2155-304 was in a bright X-ray state and extended X-ray and
GeV gamma ray observations were made as part of a multiwavelength campaign.
Comparisons are made of the VHE emission during this time with the available
data from other wavelengths.
