HEMIPTERA OF COLORADO. 



95 



ten miles south-west of Fort Collins, May 21st; mountains 

 south-west of North Park on Grizzly Creek, July 10th, on 

 Artemisia tridentata; Rabbit Ears Pass, Routt County, July 

 2Cth; Steamboat Springs, July 12th, on Artemisia tridentata 

 (Baker) . 



Tbaninotettix citrinifrons n. sp. 



Face one- ninth longer than broad; clypeus two-thirds longer tlian broad, constricted 

 at the sides, widened near the apex, basal suture curved; lorae as long and nearly as 

 wide as the clypeus; genae very slightiy depressed below the eyes, feebly rounded at 

 the sides, attaining the tip of the clypeus, moderately wide 

 below the lorae; front one-fourth longer than broad, once and 

 three-fourths the length of the clypeus, gradually narrowing 

 below, superior angle very obtusely and evenly rounded. Face 

 and anterior one-half of vertex finely shagreened. Disc of ver- 

 tex slightly depressed, length at middle but little more thau at 

 the eyes, width between the eyes two and one-fifth times the 

 length at middle. Pronotum about twice wider than long, length 

 about twice that of the vertex, curvature five-ninths of the length, 

 slightly concave behind, sides short and not carinated. Scutel- 

 lum shagreened. Color yellow and deep smoky. Face, anterior 

 and middle legs, and posterior femora, deep yellow, Vertex yel- 

 low with a transverse black band not attaining the eyes. Prono- 

 tum dark smoky, the tip tinged with yellow. Elj-tra smoky sub- 

 hyaline, nervures darker. Tergum and venter black with nar- 

 row lateral and apical margins yellow. Posterior tibiae and tarsi 

 dark smoky yellow. Sternum black. 



Length 4.5 mm, Described from one male. 



Leadville, August 23d (Gillette). 



Thaumotettix caricis n. sp. 



Female: Face somewhat more than one-eighth wider than long; clypeus about one- 

 fourth longer than broad, gradually narrowed to the rounded apex, basal suture nearly 

 straight; lorae one-lialf as wide and nearly as long as the clypeus; genae broad, hardly 

 depressed beneath the eyes, outer margin evenly rounded, attaining the tip of the clypeus 

 but much wider below the lorae than in longula; front one-eighth longer than broad, twice 

 the length of the clypeus, gradually narrowing below, superior angle obtuse and broadly 

 rounded. Face and anterior third of vertex finely shagreened. Disc of vertex flat, slop- 

 ing, length at middle once and three-fifths that at eyes, width between eyes a third 

 greater than the 

 length at middle. 

 Pronotum two times 

 wider than long, the 

 length once and a 

 third that of the ver- 

 tex, curvature three- 

 flfths of length, 

 finely transversely 

 wrinkled and with 

 scattered shallow 



punctures on the posterior three-fourths, hind margin very slightly concave, sides short 

 and not carinated. Scutellum coarsely shagreened. Hind margin of last ventral seg- 

 ment with the posterior angles produced, medially but little produced, with two blunt, 

 short and broad, black teeth. Color pale yellowish green. Face slightly dusky with 

 indistlDCt transverse lines on either side of the front. Vertex pale yellowish with a 



