32 CALODEMA RIBBEL 



lour has an oblique direction ; both spots are also visible 

 on the undersurface. Strongly transverse , widest behind the 

 middle , angularly convex in a transverse direction , finely 

 and rather distantly punctured , with a slightly impressed 

 mesial line. Anterior margin deeply bisinuate, about half 

 as long as the base; sides strongly diverging in straight 

 lines till behind the middle, then suddenly converging to 

 the base ; base very deeply bisinuate , with a narrow elon- 

 gate median lobe. — Scutellum green , strongly transverse , 

 semi-lunate , impunctate. 



Elytra dark steel-blue , with green and purple tinges , 

 and with a broad transverse yellow band across the middle. 

 Slightly convex , nearly twice as long as broad at the base 

 where they are lobed, the sides subparallel, narrowing in curved 

 lines behind the yellow band; the apex of each elytron bi- 

 emarginate and bidentate , the sutural emargination small and 

 very oblique. Deeply punctate-striate , the interstices convex , 

 finely punctured, much more strongly between the 1^^ and 

 8th striae , and at the shoulders where the punctures be- 

 come confluent, so as to give a rugose appearance. 



Beneath shining green , the sides of the breast strongly and 

 closely punctured. Abdomen very finely punctured; in the 

 male yellow , the segments bordered with green , the apical 

 one semicircularly eraarginated in the middle; in the fe- 

 male yellow , with the S''^ and 4*^ segment green. Legs 

 golden-green. 



Although this beautiful species differs in some points, 

 especially in the shape of the thorax and scutellum, from 

 the two other described species, I do not believe the crea- 

 tion of a new genus necessary or desirable. 



Of the six specimens , captured at Ureiuning (Aru Islands) 

 by Mr. 0. Ribbe (to whom I dedicate the species), one Q 

 is now in the collection of the Leyden Museum and an- 

 other example of the same sex in that of the author. 



Amsterdam, November 1884. 



Notes from the Leyden IMuseum, "Vol. VII. 



