with golden ; front punctured, subimpressed, and 

 with a small rufous spot; antennae robust, sur- 

 passing the base of the thorax, black, opaque; 

 joints turbinate, approaching to moniliform, the 

 margin of the tip rounded ; second joint two 

 thirds the length of the third ; terminal joints 

 largest near the middle, and rapidly attenuated 

 to an acute tip : eyes oblong-oval, emarginate : 

 palpi black : clypeus and labrum obscure : thorax 

 golden-green, polished, with unequal, minute, 

 sparse punctures ; a longitudinal, dorsal, im- 

 pressed line, and a transverse basal one ; base 

 bluish, anterior angles prominent : scutel blue, 

 obtuse behind : elytra red, or golden-purple, 

 somewhat rugose: two indistinct elevated lines 

 on the disk, and a submarginal one: beneath 

 green, polished : feet black ; thighs beneath blue 

 or purplish ; trochanters armed with a conic 

 spine near the inner base, obsolete or wanting in 

 the female. 



OBSERVATIONS. 



This noble species, which in magnitude and 

 splendour surpasses the far-famed vesicatoria, 

 has, I understand, been labelled in a British cabi- 

 net with the name which I have here adopted. 



PLATE III. 



