46 IOWA ACADEMY OF SCIENCES. 



JJ. Jug-a longer than tylus, contig- 

 uous at their cephalic ends. 

 K. Apical margin of corium 

 uniformly convex; lateral 

 margin of head very slight- 

 ly sinuate cephalad of eyes. 

 Peribalidi. 

 KK. Apical margin of corium 

 very slightly sinuate near 

 lateral end; lateral margin 

 of head distinctly sinuate 

 cephalad of eyes. 



HoJcostethus. 

 GG. Odoriferous orifices situate just cepha- 

 lad of lateral border of post-coxae, with- 

 out sulcus, scarcely elevated; head 

 strongly bent ventrad, front almost ver- 

 tical; reflexed lateral margins of j ga 

 much swollen. Murgantia. 



FF. Segment 2 of venter with a mesal spine or 

 tubercle pointed cephalad. 

 G. Metasternum little elevated, never with 

 a bi-lobed process extending cephalad of 

 medi-cox9e. 

 77. Segment 5 of antennae less than 

 twice as long as segment 2; scutel- 

 lum and pronotum nearly or quite 

 concolorous. Nezara. 



HH. Segment 5 of antennae more than 

 twice as long as segment 2; apex of 

 scutellum and cephalic half of pro- 

 notum much lighter in color than 

 remaining portions. Banasa. 



GG. Metasternum strongly elevated, pro- 

 duced far cephalad between the medi- 

 coxse into a bi-lobed process. Eclessa. 

 A A. Tarsi 2 jointed (sub-family Acanthosomime). Acanthosoma. 



