154 Psyche [August 
eyes about one half the diameter of the posterior margin of the 
prothorax. Antenne about as long as head, thorax and scutel- 
lum together. Rostrum longer, reaching past the middle coxze. 
Scutelhumsbroader thanwWonee sees. Auer aa Blissus Burm. 
Key to the Genera of the Subfamily Geocorine. 
A. Head extended laterally, eyes obviously stalked; inner margins 
of the eyes strongly converging throughout; the eyes not in 
contact with the anterior lateral margins of the pronotum. ~The 
first segment of the rostrum shorter than the second or subequal 
to it. Ocelli commonly placed midway between the inner mar- 
gin of the eye and the middle of the vertex. Head smooth, 
MMP UNCALCE nahin a cette ee ees 2 eae Isthmocoris McAtee. 
AA. Eyes not obviously pedunculate or stalked and commonly 
contiguous to the anterior lateral margins of the pronotum; 
inner margins, at least anteriorly, more commonly subparallel. 
Head, commonly, more or less punctate. Ocelli in most cases 
placed closer to the inner margin of the eyes than to middle 
point of the vertex (except in punctipes Stal and flavilineus Stal). 
The first segment of the rostrum longer than the second 
Geocoris Fallen. 
Subfamily Heterogastrine. 
Body oblong. Lateral margins of pronotum lightly marginate; 
posterior margin strongly concave. Anterior femora armed toward 
apex with a toothnor spilleses «rsa... ace Heterogaster Schill. 
Key to the Genera of the Subfamily Pachygronthine. 
A. Antenne short; first segment shortest of all, not attaining apex 
of head and not clavate at apex; second segment more than 
twice as long as basal segment. Head strongly deflexed from 
base; exterior margins of the Jugze not elevated to form a ridge. 
Scutellum subequilateral, not at all calloused near basal angles. 
Apical margin of corium toward apex of clavus more or less 
sinuate, and at outer apical angle obviously rounded. First 
tarsal segment of the hind legs short, about as long as the second 
and third ‘taken dogethersy- pennies ee Phlegyas Stal. 
AA. Antenne longer; first joint longest of all, far surpassing apex 
of head and clavate or swollen at apex. Head not strongly 
deflexed; exterior margins of lateral lobes (juga) of the head 
