I'lIYTOlMlAGA KROJM SUMATRA /|83 



Lengtli ''2 lines. 



Head rather elongate, flavous, the vertex piceous, frontal tu- 

 bercles strongly raised, lower portion of face forming a single 

 piece, the clypeus scarcely indicated, antennae long and slender, 

 black , the penultimate two joints llavous , basal joint elongate 

 and the longest , slender at the base , tliickeiied at the apex , 

 second joint very short, third, lialf the length of the first joint, 

 its base fulvous, terminal joints about half the length of the 

 third one but not thickened, thorax transverse, more than twice 

 ;is broad as long, the sides narrowed at the base, the angles 

 flattened and produced, each with a long seta, the surface with 

 a small fovea at each side , impunctate , the disc stained with 

 piceous, scutellum black, elytra with a transverse depression 

 below the base, with three double rows of deep punctures, the 

 outer ones of which are only visible at the middle where they 

 are bounded at each side by an indistinct ridge, the punctures 

 near the suture are irregular and partly interrupted, underside 

 and legs flavous, tibiae partly or entirely black as well as the 

 tarsi, unarmed, ^the first joint of the posterior tarsi as long as 

 the following three joints togetlier, claws appendiculate, anterior 

 .coxal cavities closed. 



Ifab. Si-Rambé. 



The systematic position of Chaloemis is still one of doubt, 

 Chapuis in his " Genera des Coléoptères " placing it amongst 

 the Ilalticiiiae near Oxyyona^ while Baly considers the proper 

 place to be near Coelomera amongst the Galerucinae. If the prin- 

 cipiai character assigned to the Halticinae, that is, the thickened 

 posterior femora is to be considered of any value , Chaloenus 

 certainly cannot find a place amongst them, since there is scar- 

 cely any difference to be found in the thickness of any of the 

 femora and no more than amongst many genera of Galerucinae; 

 tiie unarmed tibiae is another character very rarely found in 

 the Halticinae, on the other hand, tlie shape of the head and 

 the punctate-striate elytra are more suggestive of the latter 

 Suljfamily, but in my opinion Chaloenus is a form of transition 

 between the two groups of which we have instances enough in 



Ann. del Mus. Civ. di St. Nat. Serie •.'.^ Vol. XVI (7 Maggio 18%) 28 



