IOWA ACADEMY OF SCIENCE 
221 
HH. Ocelli not nearly so far apart as eyes; pronotum armed 
with dorsal tubercles ....... .20. MACROPHTHALMUS 
GO. Antennae inserted on top of head between margins, close 
to eyes; antenniferous tubercles not projecting from side 
ofi head. 
H. Femora unarmed above; prosternum without row of 
setigerous teeth; anterior tibiae usually with spongy fossa. 
I. Anterior lobe of pronotum with a bispinous or bituber- 
culate disc; femora unarmed 19. SPINIGER 
II. Disc of pronotumi unarmed; apex of scutellum pro- 
duced into a spine. 
J. Ocelli close to eyes; eyes large and close together. 
18. REDUVIUS 
JJ. Ocelli remote from eyes. 
K. Femora armed on both sides with an acute little 
tooth or spine; prominent tubercle on each side 
of neck; lobes of pronotum' distinct; eyes small, 
separated 17. LEOGORRUS 
KK. No tubercle on neck; lobes of pronotum indis- 
tinctly separated 16. ALLOEOCRANUM 
HH. Fore femora spinose, at least, below; prosternum armed 
with row of blunt setigerous teeth; no tibial fossa. 
I. Middle tibiae neither incrassate nor spinose; anterior 
lobe of pronotum rugose... 14. NALATA 
H. Middle tibiae incrassate and spinose; middle femora 
spinose; anterior lobe of pronotum not rugose 
15. MICROLESTRIA 
FF. Apex of scutellum broad, with two or three spines. 
Ectrichodiinae. 
G. Joint 1 of rostrum more than half as long as head, longer 
than joints 2 and 3 together; joint 1 of antennae short. 
2 9. POTHEA 
GG. Joint 1 of rostrum not extending behind eyes, subequal 
in length to joint 2; joint 1 of antenna© about as long as 
head 30. ECTRICHODIA 
DD. Ocelli cephalad of hind margins of eyes; joint 1 of antennae 
stout, joint 2 of many jointlets. Hammatocerinea. 
E. Antennae inserted near eyes; head in front of eyes short, sub- 
equal to distance between eyes 32. HOMALOCORIS 
EE. Antennae remote from eyes; head in front of eyes over twice 
as long as distance between eyes 31. HAMMATOCERUS 
CC. Hemelytra with a quadrangular or discoidal areole at the proximo- 
anal angle of the anal areole of the membrane. 
D. Anal areole of the membrane not extending as far proximad as the 
costal areole; basal joint of antenna thickened, porrect; other 
joints slender, folding back beneath head and joint 1. Stenopodinae. 
E. Head armed with a ramous or furcate spine below on each 
side caudad of the eyes. 
