4i2 BULLETIN UNITED STA'IES GEOLOCilCAL SURVEY. 



Atlantic region would have been favorable for them, in this instance I 

 was rewarded by the finding- of only a single specimen. 



On the eastern side of the continent, it extends from Maine to Florida, 

 " and thence westward through Texas into Mexico. 



Heb^us Stal. 

 S. insigms. 



Eerceus ivsignis Uhler, Fifth Aiiu. Rep. U. S. Geo]. Surv. for 1871, 1872, p. 407. 



From near Golden, Colo., at the mouth of the Clear Creek Carton, 

 August 7. 



The orbicular anterior lobe of the pronotum is quite remarkable in 

 this insect. In that respect it is quite unlike either of its congeners, 

 and in a degree repeats the form of pronotum seen in Araphe H.-Schf. 

 Specimens occasionally occur with a chestnut-red pronotum, but the 

 fully matured individuals have that part black, and more or less tinged 

 with grayish. 



Trapezonotiis Fieber. 

 T. nehulosus. 



Lygceus oiehiilosus Fallen, Monog. Cim., 65, No. 7. 

 Famerafallax Say, Heteropt. New Harmony, 17, No. 6. 

 Trapezonoius nehulosus Fieber, Europ. Hemipt., 190. 



Moderately common at Denver, and a few specimens were swept from 

 plants in Beaver Brook Gulch, August 6. It varies very much in the 

 breadth of its outline, and somewhat in the distinctness and breadth of 

 the whitish markings of the scutellum and hemelytra. The species is 

 common in many parts of Europe. 



Emblethis Fieber. 

 Ij. arenarius. 



Cimex arenarius Linn., Fauna Suec., 955. 



EmMethis arenarms Fieber, Europ. Hemipt., 198, No. 2. 



Quite common in Eastern Colorado, as well upon the plains and foot- 

 hills as in the mountains. I found it near Denver, and also in Clear 

 Creek Canon, August 6. Dr. Packard obtained a specimen upon the 

 summit of Arapahoe Peak, 13,000 feet above the level of the sea, on 

 July 14. 



Subfamily HETEROGASTRIN^E. 



Helonotus Uhler. 

 S. abhreviatus. 



Helonotus ahhreviaius Uhler, Bull. U. S. Geo]. Surv., vol. ii. No. 5, p. 47. 



Two specimens collected in Clear Creek Canon, August 6. One indi- 

 vidual is more slender and paler than usual ; but, as I possess several 

 specimens showing intermediate characters, it should probably not be 

 regarded as a new species. 



This insect lives on the red clover, and sometimes occurs in these 

 fields, in the vicinity of Baltimore, in swarms of untold numbers. It is 

 generally coated with a white powder, which easily rubs off, and some- 

 times it is covered with the pollen of the flowers over which it runs. 



