The bark of Albizzia lebeckioides and Albizzia falcataria have been examined  for  their chemical    constituents.    A. lebeckioides   has  yielded    the   steroidol   ketone, stigmasta-4,2,2-dien-3-one,  and a triterpene alcohol as the major neutral  components.   A. falcataria  has yielded a similar triterpene and fatty ester as its major constituents.  The toxicity of the compounds  was evaluated in bioassay against termites.  The result showed that lupenone and stigmastadienone were toxic to Neotermes dalbergiae species.  In contrast those compounds were less toxic to Cryptotermes cynocephalus species.