  A catalogue of X-ray Plasma Ejections (XPEs) observed by the Soft X-ray
Telescope onboard the YOHKOH satellite has been recently developed in the
Astronomical Institute of the University of Wroc{\l}aw. The catalogue contains
records of 368 events observed in years 1991-2001 including movies and
crossreferences to associated events like flares and Coronal Mass Ejections
(CMEs). 163 XPEs from 368 in the catalogue were not reported until now. A new
classification scheme of XPEs is proposed in which morphology, kinematics, and
recurrence are considered. The relation between individual subclasses of XPEs
and the associated events was investigated. The results confirm that XPEs are
strongly inhomogeneous, responding to different processes that occur in the
solar corona. A subclass of erupting loop-like XPEs is a promising candidate to
be a high-temperature precursor of CMEs.
