GEOLOGICAL SUEVEY OF THE TEEEITOEIES. 395 



Subfamil;y Penta^omid^, 

 Perillus, Stal. 



1. P. claudus, Say, (Jour. Acad. Phila., vol. TV, p. 312, No. 2.) — 

 Inhabits Colorado, California, Kansas, &c. The present specimen, of the 

 pale variety, is from Ross Fork, Idaho. 



2. P. exapta, Say, (Jour. Acad. Phila., vol. IV, p. 313, No. 3.) — Col- 

 orado. It varies in the width of the black upon the pronotum, and this 

 color is indeed sometimes entirely absent from that part. Specimens 

 have passed through my hands which had been collected in British 

 America, New England, Illinois, and in several of the regions West of 

 the Mississippi Eiver. 



3. P. circumcinGtus, StS,l., (Entomol. Zeitung, Stettin, vol. 23, p. 89, 

 note.) — Dakota. Scarcely a species found in our Territory extends over 

 so wide a surface as this. It is found on the Isthmus of Panama, in 

 the island of Trinidad, and in Canada, New England, and New York. 



Fodisus, Stal. 



> P. sjnnosiiSj Dallas, (British Museum List. Hemipt., p. 98, No. 7.) — A 

 common insect in most parts of the Atlantic region, and extending as 

 far west as Nebraska and south into Texas. Two specimens from Port 

 Oobb, Indian Territory, seem to offer no differences from those common 

 in Maryland and Pennsylvania. 



Zicrona, Amyot et Serv. 



Z. ctiprea, Dallas, (British Museum List, p. 108, No. 2.) — After dili- 

 gently comparing specimens from both continents, no sufficient differ- 

 ences have prevailed to separate this from the Z. cceridea, Linn. Small 

 variations in the color and in the distinctness of the punctures are 

 apparent in si)ecimens from both localities ; but in a series of specimens 

 these are seen to be gradations between the opposite extremes. The 

 present specimens are from Snake River, Idaho, and from Fort Defiance, 

 New Mexico. Mr. Dallas's type came from the vicinity of Hudson's 

 -Bay. 



Cosmopepla, Stal. 



C. carnifex, Fab., (Ent. Syst., Sui^pL, 535, No. 162.) — Inhabits Nebraska, 

 Indian Territory, Texas, and the Eastern United States and Canada. 

 It exhibits much variation in the depth and amount of red on the pro- 

 notum and abdomen. 



Neottiglossa, Kirby. 



N'. undata, Say, (Heteropt., New Harmony, p. 8, No. 17 :) iV. triline- 

 ata, Kirby, (Fauna Bor. Amer., p. 276.) — This species occurs in Ne- 

 braska, Canada, and throughout most of the northern parts of the 

 United States. 



Mormidea, Amyot et Serv. 



M. lugens, Fab., (Ent. Syst., IV, -p. 125;) Pentatoma punctipes, Say, 

 (Jour. Acad. Phila. IV, p. 313.) — From Cheyenne, and Indian Ter- 

 ritory. It extends as far south as Matamoras, Mexico, and inhabits 

 almost the whole region east of the Mississippi River. 



