CARITHECA SUMATRENSIS. 61 



plish violaceous , strongly and closely punctured. — Length 

 4 lines. 



Head impunctate. Eyes very large. Clypeus thickened , 

 transverse, antenuae flavous , second and third joints very 

 short, equal, fourth joint the longest, 5 apical joints 

 shorter , equal , pubescent. Thorax narrowly transverse , 

 the sides straight, anterior angles subacute, surface with 

 a distinct transverse groove across the entire disk, distinct- 

 ly punctured near the anterior and posterior margin. Scu- 

 tellum black , trigonate , its surface rather convex. Elytra 

 wider than the thorax , convex , longitudinally excavated 

 near the lateral margin before the middle , their surface 

 closely and slightly rugose-punctate, with indications of 

 narrow and smooth longitudinal costae. Underside and 

 femora flavous, apex of the latter and the tibiae piceous. 



A single specimen from Loeboe Tarab (Sumatra-Expe- 

 dition). 



Separated from C. Wallacei Baly by its larger size , 

 punctured thorax and flavous underside. 



Strobiderus, nov. gen. (Sect. Monoleptinae). 



Body oblong. Head exserted. Eyes large , entire. Palpi 

 robust, last joint conical. Antennae slender, filiform, long, 

 pubescent , first joint very long , second one short , third 

 joint scarcely shorter than the first , the rest elongate , 

 equal. Thorax transverse, convex, without depression. Ely- 

 tra deeply punctate-striate , interstices longitudinally costate, 

 pubescent, the apex produced into a flattened protuberance 

 and preceeded by a deep inward excavation (cT). Proster- 

 num not visible , anterior coxal cavities closed. Legs slen- 

 der , elongate , posterior tibiae with spine , their first tarsal 

 joint of half their length. Claws appendiculate. 



9- Apex of the elytra simple. 



The curious structure of the elytra in the male and their 

 punctate-striate and pubescent surface, a rare occurrence 



Notes from the Leyden ]Museum, "V"ol. VI. 



