In addition to all the tertiary curare alkaloids obtained by previous workers from Chondrodendron tomentosum, two new alkaloids, one in very small amount, and N-benzylphthalimide have been isolated. The structure of the major new alkaloid, its identity with norcycleanine, recently obtained from Cyclea insularis, and its possible relation to base B from Ch. limacii-folium are discussed. Observations are also made on the structures of base A from the latter plant, of the Chondrodendron alkaloids chondrofoline and tomentocurine, and of protocuridine, an alkaloid from pot-curare.