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). 
Thamnotettix citrinifrons n. sp. 
Face one-ninth longer than broad; clypeus two-thirds longer than 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 than 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. Elytra 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). 
Thamnotettix 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-half 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- 
fifths 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 
indistinct transverse lines on either side of the front. Vertex pale yellowish with a 
