Of the EMSS clusters listed in table 1 of Gioia & Luppino (1994) (which
contains redshifts and luminosities of the EMSS clusters) 17 are at
and have been observed by ROSAT. Of these, 11
have been observed with the PSPC . Note that MS1333.3+1725 has now been
identified as a star (Luppino et al. 1999, Molikawa et al. 1999), MS1209.0+3917 as a BL Lac
(Rector et al. 1998) and MS1610.4+6616 as (a point source at the position of) a
star (Stocke et al. 1999). There also exists a new redshift measurement for
MS1241.5+1710 of 
(Henry 2000).
.