Characteristics of the genus Batocera, but with acutely produced mesosternum, entire scape which is neither incised nor scarred at the tip, and smooth antennae and forelegs. Moreover the apical joint of the antennae is transversely divided behind the middle, although not so distinctly as in the genus Apriona. I have named this genus in honor of the well known traveller in the Malayan Archipelago Baron C. B. H. von Rosenberg, who has brought home one of the two species which will here be described.