420 GEOLOaiCAL SUEVEY OP THE TEEEITOEIES. 



dian Territory. The apterous form lias a conspicuous black vitta on 

 the dorsal middle of the abdomen. 



Bijplodus, Amyot et Serv. 



D. luridus, St&l., (Stettiuer Entom, Zeitung, vol. 23, p. 452.) — Ob- 

 tained in Colorado. It is a common species in the Atlantic region. 



Findus, Stal. 



P. socms. New species. — Pale fusco-fulvous, or fulvo-testaceous, 

 sparsely and slenderly pubescent. Form and aspect of Diplodus luridus, 

 Stal. IJpper side of head black ; the upper cheeks, a slender line along 

 the middle, a shorter one on the imjpressed line extending from the anten- 

 nae to the ocelli, a third broader line running from the middle of the eye 

 posteriorly, and the under side of the head pale fulvous or testaceous; 

 the tylus and a streak on the upper line of the lower cheeks blackish ; 

 the surface both above and below and the rostrum with minute, grayish 

 pubescence ; eyes brown ; antennae dull fulvous, fuscous on the upper 

 side and at base and tip of the first two joints ; the second joint about 

 one-third the length of the basal one ; third much stouter than the 

 second, fully twice as long as it, tapering toward the tip. Eostrum 

 reaching to the anterior coxge, testaceous at base, becoming darker 

 until finally piceous at tip. Pronotum clothed with dense, minute, hoary 

 pubescence; the anterior lobe blackish, with its lateral carina pale 

 fulvous ; posterior and lateral margins of the posterior lobe yellowish- 

 white ; posterior angles each with a moderately short, smooth subconi- 

 cal, piceous tooth, and the carina© each side terminated behind with a 

 similar tooth ; pectus and coxae shining black ; the sides usually with a 

 broad, irregular, fulvous stripe along the middle and posterior pleurae. 

 Legs yellow, very hairy; all the femora a little tumid near the tip, 

 sprinkled with fuscous; tip of tibiae and whole of tarsi, including the 

 nails, blackish j)iceous. Scutellum piceous, having a Y-shaped eleva- 

 tion, which is rufous or yellow ; the submargin broadly grooved ; the 

 margins and tip yellow. Hemelytra smoke-brown; the principal ele- 

 vated nervures, costal margin, and cuneus pale testaceous ; membrane 

 pale brown, paler at tip ; the nervules very dark brown. Tergum rufous, 

 or rufo-flavous ; the connexivum yellow, having blackish, subquadrate 

 interruptions; the posterior segment margined behind with blackish; 

 venter minutely scabrous, black, the middle line and sides broadly ful- 

 vous; its connexivum yellow, with a black, large spot at the apex of 

 each segment. 



Length to tip of abdomen, 10-12 millimeters; width across the humeri, 

 2-2J millimeters. 



Brought from the region of Snake Eiver, Idaho. It inhabits also 

 Kansas, Dakota, and Arizona. 



Milyas, Stal. 



M. einctus, Fab., (Ent. Syst., lY, p. 199, No. 20.)— Collected at Chey- 

 enne, June, 1869. It is tolerably common throughout the Atlantic and 

 extends southwest into Texas. 



Serega, Amyot et Serv. 



S. spissipes, Say, (Jour. Acad. Phila., lY, p. 328 ; Amer. Entom., vol. 

 II, PI. 31, Fig. 3.) — Obtained in Colorado. This speceis seems to be 



