and slender. Eostrum long and slender, reaching to the intermediate 

 coxaj ; the basal joint somewhat more than one-half as long as the un- 

 der side of head ; second joint much longer, reaching to the tip of 

 anterior coxie ; third and fourth subequal, each a little shorter than the 

 second. Antennte long and slender, nearly as long as the hemelytra ; 

 the basal joint about as long as the width of head between the eyes, S ; 

 or somewhat longer, 5 ; second joint as long as the inner margin of the 

 claYus, gradually thickening from beyond the middle to the lip ; third 

 much more slender, longer than the basal joint ; the fourth shortest. 

 Pronotum very long trapeziform, S ; or long subcampanulate, ? ; in the 

 latter separated into two divisions by a transverse constriction behind 

 the middle, leaving the posterior lobe high and suborbicular. Scutellum 

 almost equilateral, humped at base, the apex very acute. Hemelytra 

 widest behind the middle, the cuneus long and narrow. Abdomen much 

 contracted at base. Legs long and slender. 



All the si3ecimens thus far observed, of both sexes, have had fully- 

 developed hemelytra and wings. 



0. ohliquus. New sp. 



Long and slender, resembling Systellonotus, black or blue-black, pol- 

 ished. Face and cranium transversely obsoletely rugulose, indented on 

 the vertex, and longitudinally impressed next the inner line of the eyes. 

 Antennae yellow or pale piceous, the apical half blackish-piceous ; the 

 third joint, excepting the base, and the fourth fuscous 5 eyes brown; 

 rostrum piceous, paler on the middle, sometimes yellow, with a piceous 

 tip. Pronotum minutely rugulose, densely so in the 9 , in which latter 

 the surface is often dull opaque-black. Legs orange or pale piceous, 

 the posterior pair usually darker ; the coxee pale or white, but darker 

 or black on the anterior and intermediate ones in the 2 , while the pos- 

 terior are conspicuously white ; tarsi piceous at tip. Scutellum pale 

 yellow or white on the apical division, 9 ; or black, S . Hemelytra 

 black, obsoletely punctured, remotely pubescent; the base of the corium 

 having white streak running along parallel with the margin of the 

 clavus ; base of cuneus with a large white spot, S . The female lacks the 

 white streak of the corium. Membrane piceous or smoke-black ; wings 

 a little infuscated. Venter black, polished, sometimes with a central 

 row of rufo-piceous dots. Genital process of the male projecting laterally, 

 long and wide, falcate. 



Length, 6 to 7^ millimeters. Width across pronotum, 1 to 1^ milli- 

 meters, 



A variety of the male lacks the white marks of the hemelytra, and at 

 the same time has deep-orange legs. Immature specimens are chestnut- 

 brown, with the white markings less distinct. 



One male was obtained on the hills of Colorado, June to September, 

 by Lieutenant Carpenter. 



I have examined both sexes, from Massachusetts, Connecticut, Penn- 

 sylvania, Lower Canada, Illinois, Kansas, and Washington Territory. 



Family ANTHOCOEID^. 



Triphleps, Fieb. 

 T. insidiosiis. 



Eeduvius insidiosus, Say, Heteropt. New Harmony, 32, No. 5. 



Anthocoris pseudochinche, Fitch, Second Report on Nos. Ins. of New York, 295. i 



Inhabits Texas, Nebraska, Kansas, Illinois, Missouri, the Atlantic 

 region, and Cuba. 



