234 ME. p. CAMEUON ON [Mar. 19, 



metapleural keel ; the lower part of the metapleurse closely punc- 

 tured. The hinder tarsi are for the greater part black. 



Cheysidid^. 

 Stilbum splendidum Pab. 

 A species common in the Indian and Australian Eegions. 



ChEYSIS (HeXAOHEYSIS) NOYO-BEITAIfNIOA, Sp. nov. 



Viridis, aureo ccerideoque variegata ; flageUo antennarum nigrns ; 

 alis ftisco-violaceis. 2 • 



Long. 10 mm. 



Scape of antennse brassy blue ; the 2nd and 3rd joints metallic 

 bright green, the remaining joints are black ; the 1st joint is 

 sparsely covered with white hair, the 2nd and 3rd with a pale 

 down ; the 3rd joint is twice the length of the 2nd, and about 

 one-third longer than the 4th, The vertex is deeply and closely 

 punctured ; the ocellar region is broadly blue ; the top of the 

 front has a distinct margin ; its middle is roundly incised ; the sides 

 roundly project ; the central depression is smooth ; the lateral 

 projections bear some large, deep punctures ; the front is covered 

 thickly with long white hair. The lower outer orbits bear a 

 stout keel between the centre and the eyes ; the base of the 

 mandibles punctured, but not strongly or closely. Thorax emerald- 

 green largely mixed with blue ; the pro- and metapleursB are 

 largely brassy. The thorax, including the scutellum, is closely, 

 deeply, and uniformly punctured ; the thorax is not clearly 

 separated above ; below there are two large, deep, smooth foveae, 

 somewhat oval in shape and separated by a narrow keel which 

 does not reach the top ; on either side of their basal half is a large, 

 shallower oblique depression, which is rounded behind and trans- 

 verse and oblique in front ; in the middle of the central fovea are 

 two stout curved keels. The upper half of the propleurse is 

 largely excavated, the lower bears two large foveae. Mesopleurse 

 rugosely punctured, except on the lower part, which is depressed, 

 smooth, and irregularly punctured round the edges; the upper 

 part roundly projects in the middle. Metapleurse for the greater 

 part closely and minutely striated ; the edges, except below, are 

 deeply and largely irregularly punctured. Wings uniformly dark 

 fuscous violaceous ; the costa, stigma, and uervures deep black. 

 The basal two segments of the abdomen are uniformly, but not 

 very deeply punctured ; the basal seguient has a deep rounded 

 depression in the centre above at the base ; the 3rd segment is 

 more closely punctured, especially towards the apex ; the 6 teeth 

 are not large or acute ; the divisions are shallow and waved ; the 

 outer teeth are smaller, there are 7 foveae on either side, the inner 

 ones are broad; the dorsal surface is for the main part blue 

 mixed with brassy tints ; the ventral surface is green mixed with 

 golden ; the sides of the median segments project largely and are 

 gradually narrowed towards the outer side. 



