420 GEOLOGICAL SURVEY OF THE TEREITOEIES. 



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

 the dorsal uiiddle of the abdomen. 



DipJochis, Amyot et Serv. 



D. JurirhAs, Stal.. (Stettiner Entom, Zeitung, vol. 23, p. 4o2.)— Ob- 

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



FinduSj Stal. 



P. socius. Sew species. — Pale fusco-fulvons, or fulvo-testaceous, 

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

 Stal. Upper side of head black : the upper cheeks, a slender line along 

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

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

 posteriorly, a»d 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, gxayisli 

 I)ubescence ; eyes brown : anteunce 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 tlie anterior coxne, testaceous at base, becoming darker 

 until finally x:>iceous 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 subcoui- 

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

 similar tooth ; pectus and coxie 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 jnceous. Scutellum inceous, having a T-shaped eleva- 

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

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

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

 pale brown, paler at tip : the nervuies very diu-k brown. Tergum rufous, 

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

 interruptions; the posterior segment margined behind with blackish; 

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

 vous; its counexivum 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, St4l. 



M. cinctusj Fab., (Ent. Syst., IV, p. 199, Xo. 20.)— Collected at Chey- 

 enne, June, 1SG9. It is tolerably common throughout the Atlantic and 

 extends southwest into Texas. 



JSerega, Amyot et Serr. 



H. spissijyes, Say, (Jour. Acad. Phila., IV, p. 328; Amer. Entom., vol. 

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



