358 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxvii. 



dusky at tip. Venter sometimes flecked or flushed with rufous, but 

 usually testaceous when freshly extruded from nympha. Outer mar- 

 gins of venter pale and smooth. 



Length to tip of hemelytra, 4^-5 mm. Width of pronotum. If mm. 



Two or three specimens were secured August 12. Mr. B. D. Walsh 

 sent specimens to me from Rock Island, Illinois, and I have examined 

 others from eastern Colorado, from Buftalo, New York, taken by Mr. 

 E. P. Van Duzee, and from Massachusetts, Pennsylvania, Maryland, 

 and North Carolina. It is closely related to // ruMcunda Fallen of 

 Switzerland and Bavaria. 



MYCTEROCORIS, new genus. 



Robust, tjroadly oval, with thick and hard shell, polished, irregu- 

 larly punctate, the sparse pubescence inconspicuous. The head small, 

 acutely triangular above, much narrower than the front of pronotum, 

 the eyes prominent, subglobular, placed distant from the prono- 

 tum. The occipital collar distinctly prominent, bounded anteriorly 

 b}^ an incised line, separated behind by an angular depressed space. 

 Face sloping curvedly forward, the tylus narrow% tapering apicall}^, 

 bounded at base and each side by deep sutures. Cheeks short, nearly 

 vertical. Antennae slender, placed beneath the eyes, the basal joint 

 short, not much longer than the thickness of the head, thickest apic- 

 ally, cylindrical, one grade thinner than the basal one, a little longer 

 than the pronotum, the following joints concurrently filiform, much 

 more slender, short, each one hardly as long as the basal joint. Ros- 

 trum long, slender, the basal joint broad, flattened, a little longer than 

 the gula, the following ones much more slender, the apex reaching 

 behind the posterior coxai. Pronotum prominently convex, wider 

 than long, with a high collum and prominent callosities, the lateral 

 margins curving steeply downward and curvedly narrowing toward 

 the anterior angles, the posterior margin acute edged and curved. 

 The prosternum broadly and deeply scooped out. Fore-femora stout, 

 fusiform. Scutellum small, polished, prominent, the basal portion 

 tumidly convex. Corium broad, convex, strongly curved on the cos- 

 tal border, the cuneus broad, bluntly curvedly, triangular, flat, and 

 depressed, the membrane long and wide, wrinkled at base, with the 

 vein of the cell very coarse, and the inner areole not defined. 



This genus comes between J^uramosus Renter and Camptohrochis 

 Fieber, and it goes far toward connecting the divisions Capsaria and 

 Bryocoraria as now recognized. 



MYCTEROCORIS CERACHATES Uhler. 



Derseocoris cerachates Uhler, Heteropt. Lower California, California Acad., IV, 

 1894, p. 265. 



Two specimens of this remarkable insect were secured August 12 

 and 16. It comes very near to Camptohrochis Fieber, but deviates 

 therefrom in the composition of the head and antennae. 



