PRELIMINARY LIST 



Steamboat Springs, July 12th on Carex (Baker). 

 Deltocephalus nielshehneri Fitch. Del. VanDuzee. 



Colorado (VanDuzee, 4). 



Fort Collins, June 4th to Octol^er 15th; Horsetooth Gulch, 

 June 5th; Rist Canon, April 25th to June 12th; North Park, 

 July 20th; Steamboat Springs, July 26th; 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 monticola 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-flfth 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 melsheimeri. 

 Face smoky with concentric broken light lines above. 

 Disc of clypeus, margins of lorae, and genae next the eyes, 

 daric brown. Vertex light, with four short oblique black 

 dashes on the ape.x. Pronotum darkened on the disc. Ely- 

 tra pale greenish subhyaline, nervures 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 Diore or less spotted with black. 

 Length 3 mm. Described from one female. Near melsheimeri. 



Leadville, August 23d (Gillette). 



Deltocephalus sayi Fitch. 

 Colorado (VanDuzee, 4). 



Fort Collins, July 4th (Gillette) 

 July 14th (Baker). 



Deltocephalus sexiuaculatus 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 



Det. VanDuzee. 



Steamboat Springs, 



