322 JASSID-E. 



Si/noj)sis of Genera. 



A. Vertex more or less elongately produced in front 



of eyes. 



a. Vertex about or nearly twice as long as breadth 



between eyes ; face narrow, elongate, more or 

 less triangularly produced in front of eyes. 

 «, Vertex centrally longitudinally carinate, the 



lateral margins sinuate Dussana, p. 322. 



b. Vertex not longitudinally carinate, the 



lateral margins obliquely straight Dhabmma, p. 323. 



b. Vertex a little longer than broad between eyes; 



face broad, not elongately produced in front 



of eyes Sabima, p. 324. 



B. Vertex not elongately produced in front of eyes. 



a. Face with the lateral margins broadly concavely 



sinuate before middle Guliga, p. 326. 



b. Face with the lateral margins more or less 



convexly rounded. 

 «. Vertex not longer than pronotum ; scutellum 



longer than pronotum .Tassus, p. 327. 



b. Vertex longer than pronotum ; scutellum 



not longer than pronotum Arya, p. 338. 



c. Face somewhat sinuately narrowed to clypeus. 

 a. Vertex broader than long ; pronotum about 



three times broader than long, its posterior 



margin truncate Kunasia, p. 339. 



6. Vertex about as long as broad ; pronotum 

 medially about half as long as broad, its 

 posterior margin concavely sinuate ...... Myittana, p. 340. 



Genus DUSSANA, nov. 



Type, D. queer enda, Dist. 



Distribution. Ceylon. 



Vertex longer than pronotum, subtriangular, centrally longi- 

 tudinally carinate, the lateral margins ridged, apex narrowed and 

 moderately upturned, ocelli not discernible ; face moderately 

 elongate, centrally longitudinally carinate ; pronotum narrowed 

 anteriorly, centrally longitudinally carinate, transversely striate ; 

 scutellum transversely impressed before the apical area; tegmina 

 somewhat slender, considerably passing the apex of the abdomen, 

 apical cells four ; legs moderately long and slender, posterior 

 tibiae finely spinulose. 



2570. Dussana quserenda, sp. n. 



Black ; a central longitudinal line to vertex, apical area of 

 scutellum, costal area of tegmina — neither reaching base nor apex 

 and posteriorly broadened — two linear streaks on inner margin, 

 the first and longest claval, and the second and shortest near apex 



