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IOWA ACADEMY OP SCIENCES 
GC. Scutellum rarely extending farther caudad than 
corium, in that case sides of pronotum always entire 
near lateral angle. 
D. Jugum with a prominent lateral tooth near apex, 
or with apex pointed and projecting far ceph- 
alad of tylus; sides of head not distinctly sinuate 
just cephalad of eyes, antennal tubercles visible 
from above, and eyes placed close to cephalic 
angles of pronotum. (Tribe Halyaria.) 
E. Jugum with lateral tooth near apex; antennal 
segment 2 cylindrical, shorter than segment 3; 
venter with shallow mesal sulcus; body 
rather broad. Brochymena. 
EE. Jugum without lateral tooth, somewhat pointed 
at apex, projecting far cephalad of tylus; 
antennal segment 2 triangular, longer than 
segment 3; venter without sulcus; body elon- 
gate. Mecidea. 
DD. Jugum without lateral tooth; apex usually 
rounded, rarely pointed, in that case not 
projecting cephalad of tylus; sides of head 
usually distinctly sinuate near eyes, sometimes 
almost straight, in that case either antennal 
tubercles not at all visible from above or the 
eyes quite distant from cephalic angles of pro- 
notum. 
E. Head triangular, very convex on dorsal sur- 
face, not less than seven-eighths as broad as 
scutellum; juga distinctly longer than tylus; 
apex of corium broadly rounded. 
(Tribe Aeliaria.) 
E. Pronotum with three longitudinal low 
ridges; cephalic angles of pronotum pro- 
jecting conspicuously cephalad. Aelia. 
FE. Pronotum with a single (mesal) longitud- 
inal ridge; cephalic angles of pronotum 
not projecting cephalad. Neottiglossa. 
EE. Head of various forms, usually only slightly 
convex on dorsal surface, less than seven- 
eighths as broad as scutellum; juga ’usually 
no longer than tylus, and apex of corium 
with a distinct though usually somewhat 
