OF WASHINGTON. 509 



head and forward lobe of the pronotum united, a little thicker than the 

 others, third and following joints very slender, the second longest; ros 

 trum -lender, not abruptly narrowed, bent towards the prosternum, the 

 basal joint longest, one-third longer than the second. Pronotum longer 

 than the head, with the anterior lobe narrow, and obconical anteriorly, 

 bounded behind by a deep stricture, the posterior lobe much wider and 

 shorter, subtrapezoidal, high, widened posteriorly, bluntly carinate on the 

 lateral margins and terminating in a callosity on the humeri. Scutellum 

 triangular, acuminate at tip. Hemelytra long, oblong-ovate behind, the 

 membrane slenderon the inner border of the corium and widening towards 

 the apical curve, the veins stout, forming a large, oblong basal cell, and 

 running backwards and curving towards the apex. Connexivum left un 

 covered by the hemelytra. Venter carinate on the middle line. Legs 

 long, the anterior femora long and thickened, the tarsi short and very 

 slender. Throat and second joint of rostrum armed with stiff bristles. 



O. decorata, new sp. 



Yellowish or greenish testaceous, polished, mostly smooth; the head 

 more or less rufous, antennae yellow, usually dusky beyond the second joint, 

 eyes brownish; rostrum piceous at tip. Pronotum linearly rufous on the 

 middle of anterior lobe, posterior lobe unarmed. Scutellum more or less 

 rufous or brownish, slenderly carinated on the lateral margins, acutely 

 acuminate at tip. Corium thin, clouded with fuliginous beyond apex of 

 clavus and bordered with red at tip. the clavus red next the scutellum ; 

 membrane pale brown, darker on the basal middle. Apical portion of 

 tergum more or less dusky. Legs testaceous, with the apex of tarsi and 

 the nails piceous. 



Length to end of abdomen 5 mm. Width of base of pronotum f mm. 



Several specimens were collected near Bladensburg, Md., by 

 Mr. O. Heidemann, and one from Pennsylvania, some were sent 

 to me by Mr. Carl F. Baker. It has also been found near 

 Madison, N. J., by Mr. F. C. Paulmier. 



Fam. CIXIID^E. 

 Monorachis, new genus. 



Form of a long fssus, but related to Plectoderes. Vertex short, tub 

 ular, transverse, lunately emarginate behind, sinuated to receive the eyes, 

 the apex slightly angularly produced, front broad oval, emarginated to 

 receive the clypeus, with the lateral angles acutely carried down to border 

 the clypeus, the lateral margins prominently raised and the adjoining 

 surface correspondingly depressed, the middle strongly carinate, clypeus 

 triangular, longer than wide, narrower than the front, convexly elevated 

 longitudinally, the outer margins carinately reflexed, rostrum reach 

 ing over the middle coxae, base of antennae globose, almost as large as 

 the eyes. Pronotum very narrow, entering deeply into the notch of the 



