The Las Campanas Redshift Survey, an optically selected survey which c
ontains 26 418 galaxy redshifts, has been correlated with ''The First
ROSAT Source Catalogue of Pointed Observations with the PSPC,'' which
contains 50 408 sources from 2876 ROSAT pointed observations. Ten matc
hes were found. The optical spectra of most of the ten matches show we
ak narrow emission lines. Due to their high x-ray luminosities, their
high x-ray-to-optical flux ratios, and the evidence of rapid x-ray var
iability in the two brightest matches, we interpret the majority of th
ese objects to be narrow-line Seyfert galaxies or ''hidden'' active ga
lactic nuclei. Of the ten matches, only one galaxy shows the character
istics of a bona fide starburst.