AMBROSTOMA. 



bases of the antenna3 ; surface sparsely dotted with fine punctures, 

 more crowded at the sides near the eyes, where the surface is 

 depressed. Antennae passing to a certain extent beyond the 

 pronotum ; the five basal segments shining brown stained with 

 darker colour, sparsely covered with tine hairs, the next six 

 segments being more hairy ; first segment large, thickened and 

 curved, second more or less globular, third more than twice as 

 long as second, fourth shorter than third but nearly twice as 

 long as second, fifth and sixth almost equal to each other, each 

 very slightly shorter than the fourth ; the remaining segments 

 more or less nearly equal and slightly thickened. Prothorax about 



Fig. 14. — Ambrostoma mahesa, Hope. 



1 mm. broader than long, narrowed towards the base, front margin 

 widely emarginate, the acute and rounded anterior angles being 

 drawn forward to a certain extent, sides sinuate, convex in the 

 middle, basal margin very feebly sinuate on either side, posterior 

 angles almost right angles ; upper surface smooth, convex, very 

 finely and sparsely punctate, along the lateral bands the surface is 

 longitudinally depressed, in the depression near the base are a few 

 strong punctures, between this depression and the lateral margin 

 the whole surface is convex. Scutellum as broad as long, apex 

 rounded, surface smooth and im punctate. Elytra broader than 

 prothorax, convex, smooth, very finely and sparsely punctate ; 



