1918.] 



231 



RHOTANINE. 



a\ A triangular cell present at the base of the first median sector. 



b\ Face not linear, carinae of face not contiguous Decora. 



P. Face linear, carinae of face contiguous to near apex. 



c\ Shoulder keels present Lkvu. 



c^. Shoulder keels absent or very small Rhotana. 



«'. No triangular cell at the base of tlie first median sector Sumangala. 



Decora Burm. 



The following three si^ecies, placed under Bhotana, I consider to 

 belong to this genus: — B. ramentosa Dist., R. septemmaculata Dist., 

 It. quadrimaculata Dist. 



Leyu Kirk. = Alaba Dist. 



The following three species I consider belong to this genus : — 

 Alat'a dux Dist., Hlwtana iridipennis Mel., Mhotana opalina Dist. 



Sumangala Dist. = Mecti^ oehtnchus Muir. 



Geis'estia Stal. 



I have not seen this genus ; it appears to come near Rhotana 

 Walk. 



CENCHEEIXI. 



(0 . Subantennal process absent or very small. 

 6\ Shoulder keels absent or very small. 



c\ In profile the face and vertex meeting at an angle. 

 ri\ Subcostal cell long. 



e\ In profile vertex and face forming an acute angle, head con- 

 siderably produced Persis. 



e^. In profile vertex and face forming an obtuse angle, head not 



produced Goneokara. 



d"^. Subcostal cell short Vekunta. 



c^. In profile vertex and face forming a curve, not meeting at an angle. 

 f^. Antennae large, reaching beyond the apex of head, flattened. 

 g^. Face linear, carinae contiguous to near apex of face j vertex 



small, triangular Patara. 



g"^. Face narrow but not linear, carinae not contiguous. 



Aquirra. 



/^. Antennae small, not reaching to apex of head. 



Dawnaria. 



6^. Shoulder keels well developed. 



7t\ Face with a median carina Syn tames. 



