INDEX 163 



Wright, Dr A. D. 155 Zahorany Formation, Bohemia 15, 49 



Zygospira 154 

 Xenelasma 150 sp. 11, 21, 154 ; pi. 27, figs. 12-3 



Xenelasmatinae 150-1 Zygospirinae 154 



Professor Alwyn Williams, Ph.D., F.G.S., M.R.I.A., F.R.S.E., F.R.S. 



Department of Geology 



The University of Birmingham 



P.O. Box 363 



Birmingham B15 2TT 



Accepted for publication 1 February 1974 



