IOWA ACADEMY OP SCIENCES. 
45 
M. Cephalic part of lat- 
eral margins of pro- 
notum crenulate, lat- 
eral angles promi- 
nent, either rounded 
or pointed; head, in- 
cluding eyes, not dis- 
tinctly wider than 
long. Euschistus. 
MM. Lateral margins of 
pronotum entire, lat- 
eral angles rounded, 
not prominent; head, 
including eyes, dis- 
tinctly wider than 
long. Chlorochroa. 
KK. Frena not extending beyond 
middle of scutellum. 
L. Lateral margins of pro- 
notum with a prominent 
process slightly bent 
caudad at lateral angles. 
Prionosoma. 
LL. Lateral margins of pro- 
notum entire, lateral 
angles rounded. 
M. Dorsal surface with 
coarse, black punc- 
tures, irregularly ar- 
ranged especially on 
the pronotum. 
Tricliopepla. 
MM. Dorsal surface with 
finer regularly ar- 
ranged punctures. 
Carpocoris. 
II. Sulcus from odoriferous orifices 
continued laterad in a gradually 
disappearing wrinkle. 
J. Juga not longer than tylus. 
Tliyanta. 
