83 



Rhotaiia Walker. 

 J. Linn. Soc. Zool. I 160. 



R. lafipciniis \\'alker. 



My specimens from Tcloc Aver agree both with Wal- 

 ker's short description and his figures. Shoulder keels 

 slightly develo])ed ; subantennal processes large, stretching 

 from the apex of the facial keels, of which they appear to be con - 

 tinuations, to back of gena. Rhotana vitriccps Stal does not ap- 

 pear to be congeneric with hit i pen n is. 



Gcjicsfia Stal. 



Ofr. Vet. Akad. Forh. X\^ p. 450 (1858). 



The type of this genus, -c'ifi iccps. cannot be i)laced in Rhotana, 

 but as I only know it l)y the description and Mclichar's figure 1 

 cannot separate it with certainty. The neuration of the tea^mina, 

 as shown in Melichar's figure, dififers considerably from R. hifi- 

 peiinis Walk. 



Dichotropis gen. nov. 



Type ainboinciisis. 



In profile vertex and face curved, without angulation where 

 they meet ; gena in front of eye about half the width of eye, eye 

 about twice as broad as deep, shallowly emarginate on lower 

 border ; subantennal process large, the base stretching from facial 

 keels to back of gena ; antennae small, barely reaching to eyes, 

 pyriform, the narrow end apical. A^ertex small, not reaching to 

 anterior margin of eye, about twice as long as broad, base very 

 slightly broader than apex, acutely angularly emarginate. without 

 keel, sides straight, slightly converging toward apex, keeled, a 

 transverse keel dividing apex from face ; face gradually broad- 

 ening from base to about one-fourth from apex, where the sides 

 are angular and slightly narrowed to apex, lateral keels deep ; 

 clypeus about as long as face, distinctly tricarinate. lateral carinae 

 continuous with lateral facial keels. Pronotum very short, hind 

 margin angularly emarginate in middle, shoulder keels large. 

 Scutellum as long as broad, lateral angles slightly before middle, 

 tricarinate. Tegmina having wider radial cell than Rhotana, 

 practically the same as Lcvti. 



This p'enus is near to Decora Bierm. 



