140 THE UNIVERSITY SCIENCE BULLETIN. 



vein. Vertex white, with brown bands margined with two long black 

 stripes and two short outer ones, also with short median stripe. Prono- 

 tum whitish with four brown stripes. Scutellum yellowish to black. 

 Elytra whitish with white nervures margined with brown or black, 

 especially along the suture, apically, and along the reflexed nervures, with 

 some of the cells brownish. 



External genitalia: Female, last ventral segment long, narrowed pos- 

 teriorly, posterior margin deeply and angularly excavated, the sides of 

 the notch slightly sinuate; pygofers narrowed basally, long, and covered, 

 especially on apical half, with long bristles, equalling or only slightly 

 exceeded by the ovipositor. Male, last ventral segment short; valve 

 broad and roundingly produced posteriorly; plates broad, margined with 

 long fine hairs clear to the broad, truncate, black-spotted apices ; pygofers 

 acute posteriorly, long-bristled, much exceeding plates. 



Distribution: Though not yet taken in Kansas, it should be 

 found in the northern part of the state. 

 Hosts: Baker took the type specimens from Carex. 



Deltocephalus albidus O. & B. 



Deltocephalus albidus O. & B., Proc. la. Acad. Sci., iv, p. 201, pi. 23, fig. 1, 1897. 



Deltocephalus albidus Psyche, viii, p. 115, 1897. 



Deltocephalus albidus Gibs. & Cog., Ohio Jl. Sci., xvi, p. 75, 1915. 



Deltocephalus albidus Van D., Cat. Hemip. N. A., p. 640, 1917. 



Form: More robust than bilineatus. Length, 4 to 5 mm. Vertex 

 slightly longer than width between the eyes, acute apically. Pronotum 

 a little more than twice as wide as long, convex anteriorly, distinctly 

 concave posteriorly, humeral and posterior margins rounding into each 

 other, lateral margins short. Elytra short or moderately long, flaring, 

 two outer apical veinlets strongly reflexed. 



Color: White; vertex with a broken median line, a preapical brown 

 transverse line, and two narrow lines extending from ends of latter to 

 apex. Pronotum with six brown longitudinal stripes, the middle pair 

 extending forward on to vertex and backward across the scutellum. 

 Elytra with sutural and apical margins and reflexed nervures lined with 

 brown and also with two broken brown lines, one on clavus, the other 

 extending from the humeral angle to the middle. Tergum with two pairs 

 of stripes, the outer pair meeting in a V on the pygofers. 



External genitalia: Female, last ventral segment twice as long as 

 preceding, much narrowed posteriorly, lateral angles prominent, with a 

 distinct median lobe which is medially notched; pygofers sparsely brist- 

 led, short and broad, equalling ovipositor. Male, last ventral segment 

 narrower than preceding; valve triangular, broad and long, acutely 

 pointed; plates the width of valve basally, laterally spined, apices sub- 

 acute, nearly equalling the short, bristly pygofers. 



Distribution: Taken in Pottawatomie and Ottawa counties. 

 Hosts: Taken in pastures where Bouteloua and Buchloe 

 abound. 



