414 GEOLOGICAL SUEYEY OF THE TEERITOEIES. 



of tlie first, obfusiform ; the apical joints abruptly more slender. Pro- 

 iiotiim trapezoidal, fully twice as wide as long 5 the osteolar orifice large; 

 the scale in which it is inserted is subpj'riform in outline. Hemelytra 

 wider posteriorly; the costal margins arcuated and the edge elevated. 



JD. hesperia. New species. — Long-ovate, dull black, invested all over 

 with gray, prostrate pubescence. Head long, without the eyes very 

 much narrower than the front of prouotum, obsoletely, minutely 

 wrinkled; the face slanting downward, moderately convex; the occiput 

 having a feeble and very slender carina across its width ; eyes brown ; 

 antennae black ; the basal joint about one-third the length of the second; 

 the second a little longer than the head and pronotum united, gradually 

 thickened from the middle to the tip; the thnxl and fourth much more 

 slender ; the third about one-half the length of the second ; the fourth 

 haidly more than one-half that of the third. Eostrum yellowish -piceons, 

 reaching behind the posterior cox?e ; the apical joint very slender and 

 much longer than the thjrd joint; bucculse yellowish. Pronotum a little 

 transverse, moderately convex ; the sides oblique, not carinated, a little 

 arcuated; the surface minutely wrinkled, densely coated with grayish 

 pubescence; the callosities a little convex, defined posteriori}' by an 

 impressed line; anterior margin almost straight, fitting very closely 

 against the head, with a feebly defined coUum ; posterior angles 

 rounded ; the posterior margin a little sinuated. Propleura wrinkled, 

 and, together with the rest of the pectus, densely grayish pubescent. 

 Legs lurid rufous, minutely pubescent; the coxae, tarsi, and tip of tibse 

 blackish. Scutellum transversely wrinkled, very slightly convex. 

 Hemelytra almost flat, densely scabrous, closely grayish i)ubescent; the 

 costal margin much elevated, arcuated; the clavus large and wide; mem- 

 brane blackish. Yenter black, polished, minutely sericeous pubescent. 



Length to tip of venter, 4,J millimeters. Width across the humeri, 2^ 

 millimeters. 



Inhabits Colorado and Dakota. 



PceciloseytuSj Fieber. 



1. P. venaticus. Kew species.— Rather less robust than Charagochilus 

 Gyllenliali^ Fieber. Dull black, closely, minutely, yellowish pubescent. 

 Head black, densely pubescent, face moderately convex; the cranium 

 with a yellow spot^ against each eye ; occipital carina slender, sharp. 

 Antenni black, stout, the basal joint extending a little beyond the tip 

 of tylns; second joint a little stouter at tip, about as long as the prono- 

 tum and scutellum united; the third joint abruptly more slender, about 

 the same length as the basal one; the apical joint subequal to the pre- 

 ceding, and a very little more slender. Pronotum moderately convex, 

 black, minutely, closely punctured, and obsoletely wrinkled, coated with 

 sparse, vellowiVh pubescence, a little depressed between the callosities; 

 the posterior margin arcuated; the edge yellow ; lateral margin oblique, 

 straight. Pectus black, pubescent, with the posterior and inferior 

 margins slenderly yellow. Legs black, minutely pubescent; the coxae, 

 base of femora, and basal and middle joint of tarsi yellow. Scutellum 

 a little convex, minutely, transversely wrinkled, coated with yellowish 

 pubescence. Hemelytra longest in the male, black, yellowish pubescent, 

 minutely scabrous, closely punctured ; the cuneus, and sometimes the 

 costal margin, red or yellow; the membrane blackish, with the nervule 

 more or less yellow. Abdomen black, sericeous pubescent ; the posterior 

 edges of the segments sometimes whitish. 



