UHLER ON INSECTS. 473 



Abuiulaut upon low herbage in damp fields at Denver, and near 

 Sloan's Lake, west of Denver, August 17. One specimen has the hem- 

 elytra dusky yellow and without markings. 



7. J. Icetus. 



Jassus l(ctus Uliler, Bull. U. S. Geol. Surv., vol. ii, No. 5, p. 94. 



One specimen from the mountains near Beaver Brook, August 6. 



Platymetopius Burm. 

 P. acutus. 



Jassus acutus Say, Journ. Acad. Phila., vi, 306, No. 2. 



One specimen from near Manitou, August 13, swept from herbage 

 near the Fountain Creek. It is very common in the Atlantic region, 

 being found from Boston, Mass., as far as to the Saint John's River, 

 Florida. A single specimen is in a bottle of my specimens from Utah, 

 near Salt Lake. 



Deltocephalus Burm. 



D. argenteolus, new sp. 



Form very similar to that of Athysanus stylatus Boh. ; hemelytra 

 very short, truncated, not reaching beyond the second abdominal seg- 

 ment; color bluish-green, silvered. Head short-conical, green, the ver- 

 tex indented just behind the tip, the basal surface a little depressed ; 

 face paler, the front showing traces of faint, transverse lines ; antennae 

 dusky, paler at base. Prouotum bluish-green, highly polished, short,, 

 much arcuated anteriorly, minutely transversely wrinkled; the lat- 

 eral margins oblique, a little thickened ; the defiexed sides depressed, 

 bluish-white, crossed by two slender, black lines. Legs yellowish-green ; 

 coxte a little clouded with black ; femora faintly streaked with black 

 on one or both faces, the outer face of the middle pair also twice banded 

 with blackish ; tibiie usually a little streaked with blackish, but the 

 posterior pair has a strong blackish line on the inner face. Sternum 

 and pleural pieces black, the latter more or less margined with yellow, 

 superiorly with a broad, pale vitta. Scutellum minutely rugulose, uni- 

 form bluish-green. Hemelytra short, almost truncated, bluish-green, 

 tinged with silvery, coarsely punctate in oblique series, the nervures in- 

 distinct and the apical cells obliterated. Tergum elegant bluish-green, 

 highly silvered, black at base ; the penultimate segment margined on 

 the sides posteriorly and on the posterior margin, the base of the last 

 segment, and a transverse line of dots on each segment (on the last 

 segment with only two dots) black ; venter green, black on the base and 

 along the disk as far as the ovipositor, a blackish dot on the center of 

 each segment of the connexivum; sides of anal valves whitish-green, 

 a little clouded or streaked with fuscous ; the ovipositor and its sheath 

 produced very much beyond the end of the abdomen, ocherous-tinged 



