IOWA ACADEMY OF SCIENCES. 
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DD. Scutellum medium; frena extending to the 
middle of scutellum. PerilluH. 
GG, Pre-femora unarmed. 
D. Base of venter distinctly armed with a somewhat 
prominent spine or acute tubercle extending 
cephalad. 
E. Bucculse very slightly elevated, gradually dis- 
appearing caudad; frena extending distinctly 
beyond middle of scutellum. Fodisus. 
EE. Bucculse distinctly elevated, not at all thin- 
ning out caudad, joining at caudal ends; frena 
extending just to middle of scutellum. Mineus. 
DD. Base of second segment of venter unarmed, some- 
times elevated into a small obtuse tubercle not 
projecting at all cephalad. 
E. Segment 2 of rostrum as long as the two api- 
cal segments together. 
E. Juga scarcely longer than tylus; body, at 
least thorax, shiny. Euthyrliynchus. 
EE. Juga longer than tylus; body not shiny. 
Rhacognathus. 
EE. Segment 2 of rostrum shorter than segments 
B and 4 together. 
F. Juga longer than, and meeting in front of, 
tylus; body not shiny. Dendrocoris. 
FF. Juga scarcely longer than tylus; body 
shiny Zicrona. 
BB. Bucculm parallel, not united caudad; basal segment of 
rostrum usually slender, rarely very slightly thick- 
ened. (Sub-family PentatomincE.) 
G. Scutellum large, broad at apex, extending far- 
ther caudad than corium, usually reaching apex of 
abdomen; sides of pronotum with a prominent 
tooth just cephalad of lateral angle. 
(Tribe Podojmria.) 
D. Juga longer than tylus, but not contiguous ceph- 
alad of it; head considerably narrower in front 
than between eyes; pronotum about one-third 
longer than head. Podops. 
DD. Juga contiguous cephalad of tylus; head nearly 
as broad in front as between eyes, but little 
shorter than pronotum. Oyicozygia. 
