This beautiful species, for which I propose the name of Catoxantha purpurascens, belongs to Lacordaire’s Section A ¹) which contains at present as far as I know seven species, viz. bicolor Fabr., nigricornis H. Deyr. and Mouhotii E. Saund. (species with a swollen yellowish patch near each posterior angle of the thorax), and Dalenii v. d. Hoev., Mniszechii H. Deyr., hemixantha v. Voll. and rajah Gestro (species without the swollen yellowish thoracical patches). The new species agrees with the four last mentioned species in wanting the swollen thoracical patches, but differs chiefly in color and in not having the yellowish spot on the elytra.