44 IOWA ACADEMY OF SCIENCES. 



apical margin of corium 

 nearly straight; apical 

 angle acute. 



31. Bucculas increasing 

 in height caudad, end- 

 ing abruptly; lateral 

 margin of pronotum 

 not explanate; frena 

 reaching just to mid 

 die of scutellum; ros- 

 trum extending a 

 little caudad of medi- 

 coxse. Byiiwiiarcys. 

 MIL Bucculse elevated in- 

 to an angle at cepha- 

 lic end, less elevated 

 caudad; lateral mar- 

 gin of pronotum ex- 

 planate cephalad; 

 frena reaching be- 

 yond middle of scu- 

 tellum; rostrum ex- 

 tending caudad of 

 post-cox83. Menedei^. 

 KK. Lateral angles of pronotum 

 produced into a conspicuous 

 spine. Proxi/s 



JJ. Veins of membrane simple or 

 slightly furcate. 

 K Frena extending beyond 

 middle of scutellum. 

 L. Tibiae all terete, with- 

 out sulcus, 

 if. Joint 1 of rostrum 

 extending a little 

 beyond bucculse. 



Mormidea. 

 MM. Joint 1 of rostrum 

 shorter than buccu- 

 lse. Oebalus. 

 LL. Tibiae sulcate above. 



