PENTATOMID/E. 275 



SUBCLASS HAUSTELLATA. Clair. 

 ORDER HEMIPTERA. Lat. 

 I. GEOCORISA. Lat. 

 Family PENTATOMIDJE. Pentatomidans. 



We are now arrived at the second great subdivision of the class Insecta, those 

 that take their food by suction, which may be regarded as forming a series of 

 Orders parallel with those of the first. 2 



Under this view I shall, with Dr. Leach and Mr. Stephens, consider the Hemip- 

 tera of Linne as restricted by Latreille, as really forming two Orders, analogous to 

 the two first Orders of the Mandibulata, the Coleoptera, and the Orthoptera, call- 

 ing, with them, the first of them by the old appellation Hemiptera, and the second 

 Homoptera. 



CLXV. Genus PENTATOMA, Oliv. 



(383) 1. Pentatoma carnifex. Executioner Pentatoma. 



Cimex carnifex. Fab. Syst. Ent. Suppl. 535, 162; Syst. Rhyng. 177, 113. Coq. Ins. ii, t. xix,/ 3. 



Length of the body 2i lines. 



Several specimens taken in the road from New York to Cumberland-house. 



DESCRIPTION. 



Very near P. oleracea, and probably its American representative. Body black, a little bronzed ; 

 grossly and thickly punctured, the punctures on the upper surface the deepest. Head subtrape- 

 zoidal; promuscis pale in the middle; antenna; longer than the head: prothorax wider than long, 

 with the lateral angles obtuse ; signed with a sanguine cross, the arms of which extend from angle 

 to angle ; lateral margin, as well as that of the hemelytra and abdomen, white : scutellum longer 

 than the thorax, obtuse with a subtriangular sanguine spot on each side near the apex : penultimate 

 ventral segment of the abdomen margined with white : membrane white. 



The specimens collected in the Expedition differ from the description of Fabricius in having the 

 margin of the abdomen and that of the elytra white instead of sanguineous ; but as the sexes of 

 P. oleracea differ in the colour of their spots, this may be a sexual distinction. I received a speci- 

 men from Dr. Mac Culloch which agreed with the Fabrician description. In one specimen the 

 markings and spots of the elytra and scutellum are very pale. 



2 See Introd. to Ent. iv, 421—25. 2 N 2 



