130 Psyche [August 
D. All of the abdominal spiracles not situated ven- 
trally, at most only the three apical ones so placed. 
The anterior femora moderately incrassate and 
commonly unarmed (except some species of 
Ischnodemus). 
E. Head always narrower than the posterior 
margin of the pronotum; tylus not sulcate. 
Hemielytra not convex and almost if not 
quite impunctate; clavus not narrowing 
posteriorly; commissure distinct, at least 
half as long as scutellum. Fore femora some- 
times much swollen (Ischnodemus) 
Blissine Stal. 
EE. Head, across eyes, very broad, as wide as 
or wider than the posterior margin of the 
pronotum. Tylus usually suleate. Hemiely- 
tra convex and plainly punctate; clavus 
commonly narrowing posteriorly; commissure 
usually absent or very short. Fore femora 
moderately incrassate and unarmed 
Geocorine Stal. 
DD. All of the abdominal spiracles situated ven- 
trally. Anterior femora more or less swollen and 
armed with one or more spines. 
F. The anterior femora much swollen and 
armed beneath with one or more teeth. 
Exterior vein of corium not parallel with 
margin. Corium not wider than ab- 
domen. Buccule short, confined to front 
of head. Posterior coxe not widely 
separated. 
G. Membrane with the two interior 
veins connected anteriorly by trans- 
verse veins. Posterior margin of 
pronotum very concave before scu- 
tellum. Fore femora not armed with 
numerous teeth 
Heterogastrine Stal. 
