350 HETEROPTEROUS HEMIPTERA. 



approximate punctures ; head with, three elevated lines : thorax 

 not dilated on the sides ; with three elevated lines : scutel also 

 with three elevated lines : hemelytra with small, symmetrical, 

 orbicular reticulations of nervures ; two series of which on the 

 lateral margin are a little larger ; those near the inner margin 

 of the membrane also a little larger. 



Length to tip of hemelytra nearly three-twentieths of an inch. 



5. T. Arcuata. — Dilated; nervures and edge ciliate with 

 short spines ; lateral edge of the hemelytra arquated. 



Inhabits United States. 



Whitish with brown spots ; dilated ; edge, excepting behind, 

 and many of the nervures, ciliated with short spines ; nervures 

 pale brownish : thorax with an inflated carina, extending over 

 the head, with one or two large brown spots ; sides dilated, 

 bullate, with a brown spot : scutel with an acute, highly elevated 

 carina on the middle, on which is a brown transverse line : 

 hemelytra with an inflated carina before the middle of each, 

 [795] on which is a brown spot; and a brown band before the 

 carina, and another on the terminal margin : lateral edge con- 

 cavely arquated, without spines on its posterior third and tip : 

 tergum and beneath black ; feet yellowish. 



Length to tip of hemelytra nearly three-tenths of an inch. 



Resembles ciliata N., but may be distinguished by the brown 

 bands and the arquated exterior edge of the hemelytra. 



ARADUS Fabr. 



I. A. crenatus. — Antennae, second and third joints subequal 

 cylindrical [;] edge of the abdomen obtusely crenated. 



Inhabits United States. 



Body dull brown or yellowish-brown ; head inequal, with two 

 longitudinal indented lines: an acute projecting point before 

 each eye; tip prominent, obtuse : antennae, second joint cylin- 

 dric, hardly longer than the third, which is cylindrical, slightly 

 narrower at base : fourth joint a little longer than the third, 

 rather thicker at tip and obtuse : thorax quadrilineate ; sides 

 widely rounded, obviously recurved, and irregularly dentate on 

 the edge : scutel, margin elevated ; hemelytra minutely dentate 

 on the exterior basal edge : tergum rufous, margin cinereous 

 with blackish angular spots : edge rather deeply crenate : be- 



