SUBFAMILY I. — PENTATOMINiE. 107 



Hudson's Bay (type), Ontario, Iowa, Colorado and Montana. 

 The two specimens at hand have the cheeks distinctly longer 

 than tylus "but not meeting in front of it, the apex of the head 

 distinctly emarginate;" just as stated by Dallas in his original 

 description. They therefore should be placed in a different 

 genus or subgenus, probably the Holcostethus of Fieber. Nothing 

 regarding its habits has as yet been recorded. 



II. Trichopepla Stal, 1867, 528. 



Small, oval subdepressed pilose species, having the head con- 

 vex, feebly declivent, narrowed in front, cheeks equalling 

 tylus, their side margins acute, feebly sinuate ; antennae short, 

 first joint not reaching apex of head, second one-half longer 

 than third, fourth and fifth longer, stouter, subequal ; beak 

 reaching first ventral, its second joint as long as third and 

 fourth united ; pronotum convex, its front portion declivent, 

 rugose, side margins entire, narrowly reflexed, humeral angles 

 rounded ; scutellum with sides sinuate, apex narrowly rounded, 

 frena reaching its middle ; connexivum narrowly exposed ; 

 osteolar canal attenuate, scarcely reaching middle of front 

 border of its supporting plate. Two species are known, both of 

 which occur in the eastern states. They are our only eastern 

 Pentatomids having the body distinctly pilose-pubescent, 

 though in a number of species the legs are pilose. 



KEY TO SPECIES OF TRICHOPEPLA. 



a. Antennae reddish-brown, the two apical joints piceous; head taper- 

 ing - in front, its apex narrowly rounded. 65. semivittata. 

 aa. Antennae black, basal joint only paler; head with sides parallel, its 

 apex broadly rounded. 66. atricornis. 



65 (98). Trichopepla semivittata (Say), 1832, 9; I, 322. 



Ovate, subdepressed. Above, dull brownish-yellow, marked with nu- 

 merous fuscous punctures, and irregular smooth elevated spaces, the 

 punctures aggregated to form a dark stripe each side of tylus and fuscous 

 or blackish blotches on front portion of pronotum and basal half of scutel- 

 lum; a raised line along the middle of each cheek, the narrow reflexed 

 margin of pronotum, basal third of costal margin of elytra, three short 

 oblique stripes on base of scutellum and its extreme tip, dull yellow; 

 connexivum alternated with black and yellow; under surface dull yel- 

 low, each side usually with a more or less evident rather broad fuscous 

 stripe; legs yellow flecked with brownish dots. Tylus convex, dull red, 

 continued to base of head by a smooth raised line. Pronotum with disk 

 of basal portion mostly smooth, but with scattered coarse punctures; 



