LIST OF HEMIPTERA OF -THE REGION WEST OF 

 THE MISSISSIPPI RIVER, INCLUDING THOSE COL- 

 LECTED DURING THE HAYDEN EXPLORATIONS 



OF 1873. 



By p. E. Uhler. 



' Order HEMIPTERA. 



Larva aud nymph active, generally resembling the adult insect. Head 

 set into the pronotum (in Corisidce overlapping it anteriorly), provided 

 with a stiff, jointed beak of three to four joints, inclosing four bristle- 

 like sacking tubes. Wings four (entirely absent from a few species) ; the 

 wing-covers either horizontal or declivous when at rest, generally opaque 

 and thicker at base, witli the apical portion membranous. 



Suborder HETEROPTERA. 



EiOstrum attached beneath the anterior extremity of the head ; the 

 front generally situated superiorly ; the hemelytra heteronomous, over- 

 lapping at tip. 



DiYisiox GYMIS^OCERATA. 



Antennfe free, not concealed beneath the head, 3- to 5 jointed (in a 

 few 13-jointed). Legs adapted for creeping, running, leaping, balancing 

 in flight, or for skimming over the surface of the water. 



SuPERFAMiLY SCUTELLEROIDEA. 



Scutellum covering nearly the whole tergum ', orbicular. 



Family CORIMEL.ENID^. 



CoRiMELiENA, White. 

 1. C. nitiduloides. 



Cimex nitiduloides, Wolff., Icones Cimicmn, 98, pi. x, fig. 92. 

 Odontoscelis nitiduloides, H. Schf., Wanz. lus. v, 12, tab. 149, fig. 47. 

 Corimelcena nitiduloides, Dallas, Brit. Mus. List Hemipt. i, 56, No. 2. 



Obtained above timber-line in the mountains of Colorado, by Lieut. 

 W. L. Carpenter. Although found at such a considerable altitude, it 

 offers no important differences from the specimens common to Kansas, 

 Texas, Missouri, and the Atlantic region. 



