The structures of five new 4a-methylsterols isolated from the immature seeds of Phaseolus uulgaris have been shown to be 25-methylgramaterol, 24Z-ethyhdene-4a-methyl-Sa-cholest-8( 14)-en-3/I-ol, 24E- and 24Zethylidene-4a, 14a-dtmethyl-5a-cholest-8-en-3~-ol and 24Z-ethylidene-4a, 14a-dtmethy1-5a-cho1est-9(11)-en-3/3-o1. In addition, four known but uncommon 4c+methylsterols, 28-isocitrostadienol, 4a-methylfecosterol, 24Z-ethyhdene-4amethylcholest-8-en-38-01, and 24-methylene-4cc, 14a-dimethyl-5cr-cholest-9(11)-en-3/I-01, together with several common 4a-methylsterols were isolated from the seeds and identified