88 
PRELIMINARY LIST 
Steamboat Springs, July 12th on Carex (Baker). 
Deltocephalus nielsheimeri Fitch. Det. VanDuzee. 
Colorado (VanDuzee, 4). 
Fort Collins, June 4tli to October 15th; Horsetooth Gulch, 
June 5th; Hist Canon, April 25th to June 12th; North Park, 
July 20th; Steamboat Springs, July 26tli; Lamar, May 7th; 
Minturn, August 24th; Montrose, June 24th; Dolores, June 
18th (Gillette). Fort Collins, May 16th to June 13th on 
alfalfa; Steamboat Springs, July 12th on Carex and Solidago 
(Baker). 
Deltocephalus nionticola n. sp. 
Female: Face nearly as long as wide; clypeus nearly as broad as long, slightly more 
than three-sevenths the length of the front, rapidly narrowing to the rounded apex, 
basal suture straight; lorae subovate, nearly as long, and two-fifths as broad as the cly¬ 
peus; front one-sixth longer than wide, sides nearly 
straight above, superior angle obtuse, more than a right 
angle. Face and anterior half of vertex finely shagreened. 
Disc of vertex flat, length at middle once and two-thirds 
that next the eye, width betweeen the eyes one-fifth more 
than the length at middle. Pronotum two and one-eighth 
times wider than long, length about the same as that of 
the vertex, curvature about three-fifths of the length, 
posterior margin very slightly concave, smooth on the 
anterior third, posterior two-thirds feebly rugose. Scutel- 
lum minutely sculptured. Elytra scarcely exceeding the 
abdomen. Hind margin of last ventral segment with a 
large median tooth, posterior angles strongly produced, 
swollen, rounded and somewhat exceeding the tooth. 
Color yellowish green, about the same as in melslieimeri. 
Face smoky with concentric broken light lines above. 
Disc of clypeus. margins of lorae, and g< nae next the eyes, 
darbrown. Vertex light, with four short oblique black 
dashes on the apex. Pronotum darkened on the disc. Ely¬ 
tra pale greenish subhyaline, netvures lighter. Venter 
except last segment, with apical and lateral margins of the 
segments yellow. Last ventral segment yellow at the sides and black on the disc. Oviposi¬ 
tor black, pygofers yellowish green and slightly streaked with black. Legs yellowish, 
anterior and middle femora spotted and annulated with black. Posterior femora with a 
black line down the outside. Tibiae t lore or less spotted with black. 
Length 3 mm. Described frorfl one female. Near m< Isheimeri. 
Leadville, August 23cl (Gillette). 
Deltocephalus sayi Fitch. 
Colorado (VanDuzee, 4). 
Det. VanDuzee. 
Fort Collins, July 4th (Gillette). Steamboat Springs, 
July 14tli (Baker). 
Deltocephalus sexmaculatus n. sp. 
Female: Face nearly as long as wide; clypeus about a fourth longer than broad, half 
as long as the front, considerably narrowed towards the rounded apex, basal suture 
