From the fresh bulbs of Lycoris sanguinea MAXIM. four known alkaloids, tazettine, haemanthamine, lycoramine, and haemanthidine, were isolated besides lycorine and galanthamine, and found to be identical with the respective authentic specimens. Lycoricidine, lycoricidinol, arolycoricidine, arolycoricidinol, β-sitosterol, methyl linoleate, and an unknown compound N-3, were also isolated. N-3, C₁₃H₉O₃N, mp 235°, contains one methylenedioxy and one amide groups, but no hydroxyl group. Based on the fact that its dihydro derivative was identical with XIV, N-3 was determined as 4,5-etheno-8,9-methylenedioxy-6-phenanthridone (XIII).