GEOLOGICAL SURVEY OF THE TERRITORIES. 415 



Length to tip of venter, 3J-5 millimeters -, width across the humeri, 

 2-2J millimeters. 



Brought from Colorado by the survey ; but specimens have been col- 

 lected also in California, Illinois, and Massachusetts. 



2. P. diffusus. New species. — More slender than P. venaticus. Black, 

 densely coated all over with prostrate, whitish i^ubescence. Cranium 

 very convex, with a spot against each eye -, the upper cheek and buc- 

 culse yellow ; antennge black, slender, reaching a little behind the mid- 

 dle of the coriumj second joint cj^lindrical, longer than the third and 

 fourth united; the third and fourth more slender, subequal. Kostrum 

 reaching to behind the intermediate coxse, piceous, with the basal joint 

 yellow. Pronotum minutelj^ rugulose, convex, margined on the sides 

 and behind with yellow; the posterior angles widely rounded. Pectus 

 yellow, sericeous pubescent, black on the upper part of the disk of the 

 pleural segments; coxse yellow. (Legs lost from the specimens.) Scu- 

 tellum with a yellow tip ; hemelytra broadly margined with pale yel- 

 low ; the cuneus either yellow, or with a dusky disk ; the thickened, 

 line-like, inner margin of the ape^ of corium yellow ; membrane dusky ; 

 the nervule yellowish. Abdomen all over black, or with the venter 

 yellow, and having the disk and broad lateral stripe black. 



Length to tip of venter, 3-4 millimeters; width across the humeri, 

 lJ-2 millimeters. 



Brought from Ogden,Utah, by the survey. The male is much longer 

 and more slender than the female, and has the hemelytra very much 

 longer than the abdomen. 



Bliopalotomus, Fieber. 



1. B. Facificus. New species. — Elongated, black, shining, grayish seri- 

 ceous pubescent. Face very convex, densely pubescent; the sides with 

 a small fovea in front of the eyes ; the occiput tranversely tumid, scabrous ; 

 eyes brown, very prominent, their posterior orbits encircled with yel- 

 low ; margin and tip of the tylus, lower end of the upper cheeks, upper 

 margin and tip of the lower cheeks, torulus and base of the second joint 

 of the antennae, and inner portion of the basal joint of rostrum orange. 

 Antennse black, bald, long, reaching beyond the tip of the corium, slen- 

 derly tapering to the tip; the basal joint a little curved, longer than 

 the head; second joint longest, longer than the head and pronotum 

 united ; third a little less than one-half as long as the second ; the fourth 

 considerably shorter than the third. Eostrum more or less yellow, 

 reaching beyond the intermediate coxae; the labrum and outer surface 

 piceous, and the apex blackish-piceous. Pronotum long and narrow, 

 transversely wrinkled, scabrous ; the sides sinuated ; the collum slen- 

 derly carinated, and the humeral angles a little arcuated. Pectus dull 

 black ; the propleura scabrous ; all the pieces, except the posterior one, 

 margined below and behind with yellow; coxal ends and the osteolar 

 segment also pale yellow. Scutellum scabrous, transversely wrinkled, 

 sparsely pubescent. Hemelytra roughly shagreened, sparingly pubes- 

 cent; the thick nervure brown at the extreme base; membrane pale 

 brown ; the nervule sometimes fulvous. Venter dull black, tinged with 

 cinereous ; the superior connexivum shagreened, margined with dull 

 yellow. S 9 . 



Length to tip of venter, 6-(y millimeters; width across the humeri, 2 

 millimeters. 



The legs are usually yellowish, the femora striped and sparingly 

 spotted with black, the knees and tip of tibiae and the tarsi blackish. 



