The catalog presents a list of redshifts for 758 Abell clusters, and velocity dispersions for 121, published as of 1991 March. We present another list of 33 Abell clusters with published redshifts, most of which are probably redshifts of foreground or background galaxies superposed on, or near, the Abell clusters. Over the past 4 years, the published number of redshifts of member galaxies in clusters increased by a factor of 2.0, but the number of cluster redshifts increased by only a factor of 1.3, while the number of cluster velocity dispersions derived from 50 or more redshifts of member galaxies increased by a factor of 3.8 (from 6 to 23).

Cone search capability for table VII/177/table1 (Redshifts and velocity distribution for Abell clusters)