172 THE UNIVERSITY SCIENCE BULLETIN. 



External genitalia: Female, last ventral segment nearly twice the 

 length of the preceding, posterior margin slightly rounding, with a wide 

 median incision reaching nearly to the middle; pygofers rather robust, 

 equalling ovipositor, well covered with spines. Male, valve as broad and 

 as long as last ventral segment, obtusely angled apically; plates very 

 broad and stout, about twice as long as the valve, outer margins round- 

 ing to the very broad and slightly divergent apices, the whole ventral 

 surface thickly covered with spines; pygofers completely hidden. 



Distribution: Seemingly confined to the eastern portion of 

 the state, as shown by its occurrence in Cherokee, Pottawato- 

 mie, Riley and Russell counties. 



Hosts: Taken sweeping grasses and weeds. 



Euscelis extrusus (Van D.). 



Athysanus extrusus Van D., Can. Ent., xxv, p. 283, 1893. 



Athysanus extrusus O. & B., Proc. Dav. Acad. Sci., vii, p. 92, pi. 6, fig. 1, 1898. 



Athysanus extrusus O. & B., Ohio Nat., ii, p. 237, 1902. 



Athysanus venosus Osb., 20th Kept. N. Y. St. Ent., p. 526, 1905. 



Athysanus extrusus Osb., 20th Kept. N. Y. St. Ent., p. 527, 1905. 



Athysanus extrusus Osb., Me. Agr. Exp. Sta., Bui. 238, p. 127, 1915. 



Athysanus extrusus DeL., Tenn. St. Bd. Ent., Bui. 17, p. 61, 1916. 



Euscelis extrusus Van D., Cat. Hemip. N. A., p. 656, 1917. 



Form: Short and very robust. Length, 4.25 to 5.5. mm. Head as wide 

 as pronotum; vertex twice as long on middle as next the eye, over one- 

 third wider than long, obtusely angled apically. Pronotum short, equalled 

 in length by the vertex, nearly three times as wide as long, lateral mar- 

 gins long, humeral margins broadly rounding with emarginate posterior 

 margin, disc transversely wrinkled. Elytra short and broad, broadly 

 rounding apically, just equalling abdomen in the macropterous female, 

 and equalling or slightly exceeding it in the macropterous male, in 

 brachypterous females leaving last abdominal segments and pygofers ex- 

 posed. 



Color: Yellowish, marked with fuscous and black. Vertex pale yel- 

 low with five dark triangular spots and with base of inner margin of 

 eye fringed with black. Pronotum and scutellum yellowish marked with 

 light brown. Elytra with nervures light, usually strongly bordered with 

 fuscous. Face pale, the suture, two lines on the clypeus and the arcs on 

 the front, black. 



External genitalia: Female, last ventral segment twice the length of 

 the preceding, narrowed posteriorly, lateral angles produced, between 

 which the posterior margin is broadly and deeply excavated; pygofers 

 broad, equalling ovipositor, sparsely spined. Male, valve triangular, as 

 long as last ventral segment, obtusely angled apically; plates broad, 

 three times as long as valve, lateral margins parallel, inner margins 

 roundingly divergent to meet lateral margins in an obtuse apex, sparsely 

 spined along margin and surface, more spiny apically; pygofers very 



