Phytophagous Coleoptera from the East. Ill 



first joint of the posterior tarsi as long as the following two joints together ; 

 anterior coxal cavities closed. 



Hab. New Guinea. 



This species is of much more robust and broad shape than 

 is the case with most of its allies, but agrees in all structural 

 characters. 



Platyxantha balyi, n. sp. 



Elongate, metallic dark blue ; the antennae (the apical four joints ex- 

 cepted) and the legs black ; thorax impunctate, transversely sulcate ; elytra 

 closely punctured and finely rugose. Length, 3^ — 4 lines. 



Head impunctate ; the vertex (in one specimen fulvous), frontal eleva- 

 tions, and the carina distinct; palpi moderately incrassate; eyes large; 

 antennae long and slender, black, the apical four joints fulvous, third and 

 fourth joints elongate, equal ; thorax oue-half broader than long, the sides 

 nearly straight, slightly narrowed at the base, the angles not prominent, the 

 surface with a more or less deep sulcation not extending to the sides, im- 

 punctate, dark blue ; scutellum black ; elytra broader at the base than the 

 thorax, very closely and rather strongly punctured ; the interstices finely 

 rugose, dark metallic blue or violaceous ; under side black, sparingly pube- 

 scent; the metatarsus of the posterior legs longer than the following joints 

 together ; tibiae unarmed ; anterior coxal cavities closed. 



Hab. Perak. 



The colour of the antennae, that of the thorax, and the finely 

 rugose elytra separate this species from any of its congeners. 



