steroids by microorganisms known to hydroxylate conventional steroids has been undertaken, using Aspergillus ochraceus, Bacillus megaterium, Curvularialunata, and Rhizoputus arrhizus. A. ochraceus and B. megaterium gave products of 11 alpha- and 15 beta-hydroxylation, respectively. In the case of C. lunata, the products were predominantly those of this organism's normal C-11 beta- and C-14 alpha-hydroxylating