ORTALIDIM;. 279 



2. Hind femora incrassate (14). .... Richarula. 

 Hind femora not incrassate. ..... Paneryxna. 



3. Scutellum with two bristles. ....... 4 



Scutellum with four bristles; ocelli remote from the vertex; last 



section of the fourth vein convergent toward the third (1O) . 



Ccelometopia. 



4. Ocelli approximated to the vertex; front not narrowed anteriorly. 



Neoidiotypa. 



Ocelli remote from the vertex; front somewhat narrowed ante- 

 riorly; wing narrowed at base (22) . . . Stenomacra. 

 Front projecting; wings not narrowed at base. Cyrtometopa. 



5. Head shaped like a long, somewhat flattened cone. Coniceps. 

 Head not so shaped. ........ 6 



6. Wings but little developed; anal cell wanting. Steneretma. 

 Anal cell present; wings fully developed. . . Epiplatea. 



