STATE AGRICULTURAL SOCIETY. 
807 
SAT’S heteropterous hemiptei\a. 
The thorax on the posterior segment, is generally obtusely 
tinged with dull yellowish, with a blackish longitudinal line in 
the middle. 
Yar. A. Thoracic elevated line rather more obvious; grey 
lines of the middle of the tergum more distinct. 
Inhab. Mexico. 
2. G. marginatus, Thorax with an elevated line; behind 
with an obvious depressed margin; abdominal margin dull 
rufous. 
Inhab. U. S. 
Body blackish, more or less tinged with olivaceous : thorax 
with a raised line, more elevated behind; lateral indented edge 
dull rufous; posterior depressed margin rather wide and very 
obvious : abdomen with the margin dull rufous : feet dull rufous; 
anterior thighs with a blackish line on both sides; coxoe dull 
rufous beneath : beneath with a slightly elevated line, terminat¬ 
ing anteriorly in a depressed one; blackish with a silvery 
reflection. 
Length over seven-twentieths of an inch. 
Much smaller than the preceding and more slender, of a 
darker color; abdominal margin of a different color, and the 
posterior margin of the thorax is broadly depressed. I obtained 
an individual, and Nuttal gave [me] one which he took in 
Missouri. 
3. G. canaliculatus, Above brownish; beneath yellowish, 
with a pectoral groove extending to the venter. 
Inhab. Georgia. 
Head dark brown with a silvery line from the eye to the 
antenna;: antenna honey yellowish and feet of the same color, 
the tarsi dusky: thorax dull yellowish or dull fulvous, darker 
each sido. with a dorsal dull fulvous line and lateral margin, 
beneath which is a double black line enclosing a silvery one : 
hemelytra brown with black nervures: tergum fulvous, with a 
black lateral line and yellowish margin; terminal spines even 
with the tip of the tail: beneath yellowish fulvous: pectus with 
an obvious groove, extending to the venter and in which behind 
is a blackish line. 
Length less than two-fifths of an inch. 
