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IOWA ACADEMY OP SCIENCE 
46. GRAPTOCLEPTES Stal. 
Stal (f) 69, 81. 
Another genus showing great color variations. Only one of the nine described 
species occurs in North America. 
G. SANGUiNEiVENTEis Stal. Mexico. Some specimens have a large sanguineous 
patch on the pronotum. Hind femora (sometimes also fore and middle femora) 
with a pale median annulus. 
47. ATRACHELUS Am. et S. 
Am. et S. 374; Stal (f) 68, 78; Champion, 283. 
Individuals of this genus are among the smallest of the entire family. They 
may be recognized by the spinose and slightly dilated apical angles of abdominal 
segments 1-5. The femora are unarmed. 
A. ciNEREus Fahr. i=Jieterogeneus Am. et S.) is about 7 mm. long and is 
fuscous in color. The body is rather stout. It is recorded from Philadelphia, 
Carolina, Texas, Mexico and southward. 
48. PLOEOGASTER Am. et S. 
Am. et S. 363; Stal (f) 98; {=Passaleutus Am. et S.) 
No species of this genus have been found on the continent north of Central 
America. 
P. ACANTHARis Wolff. Wcst Indies. Anterior lateral margins of the posterior 
lobe of the pronotum straight and entire; distinct teeth on apical angles of 
abdominal segments; apex of all femora and base of tibiae black. 
49. HEZA Am. et S. 
Stal (f) 68, 75; Champion, 284. 
The unarmed fore-femora and the mesosternal tubercle separate this genus 
from those which resemble it. Five of the seventeen described species are 
found in this region. The following key includes those of Stal and Champion 
both with some modifications. 
a. Anterior lobe of pronotum bispinous or prominently bituberculate pos- 
teriorly; abdomen not perceptibly broadened beyond middle, with sub- 
parallel sides; joint 1 of rostrum not longer than the two following joints 
together. 
b. Only the first segment of the abdomen with a short spine or tooth 
on the apical angles; joint 1 of antennae not shorter than head, thorax 
and scutellum together 1. simiJis Stal 
bb. Several or all abdominal segments armed with a spine on the lateral 
angles, 
c. Anterior lobe of pronotum armed posteriorly with two short obtuse 
spines; juga slightly prominent 2. pulchripes Stal 
cc. Anterior lobe of pronotum armed with two long spines; body 
fuscous; femora and tibae annulated with black 
3. fuscinervis Champ. 
aa. Anterior lobe of pronotum unarmed posteriorly. 
b. Anterior margin obtuse, not produced; apical angles of first five 
abdominal segments with a rather long spine 4. acantharis Linn. 
bb. Prosternum angularly produced in front; all abdominal segments with 
