110 THE UNIVERSITY SCIENCE BULLETIN. 



Color: Creamy buff, seemingly covered with a whitish bloom; apical 

 nervures and posterior margin of abdominal segments fuscous. 



External genitalia: Female, last ventral segment slightly larger than 

 in consobrina; ovipositor usually but slightly exceeding the posteriorly 

 tapered pygofers. Male, valve small, triangular, plates similar to conso- 

 brina but shorter, much exceeded by the stout pygofers which bear a few 

 stout spines on the apical half. 



Distribution: Taken only in Reno county. 



Hosts: Doctor Ball reports this species on the same plants as 

 consobrina. 



Genus Xestocephalus Van D. 



The members of this genus are ovate in form with the head 

 narrower than the pronotum, subconical, the vertex sloping, 

 and with the ocelli on the rounded anterior margin of the head, 

 distant from the eyes. Pronotum narrow, over twice as wide 

 as long, anterior and posterior margins about parallel and with 

 distinct lateral and humeral margins. Scutellum large, nearly 

 as long as the pronotum. Elytra almost coriaceous, long, 

 greatly exceeding the abdomen. 



Two of the three species of this genus which likely occur in 

 Kansas have been collected in the state. 



KEY TO SPECIES. 



A. Vertex marked with distinct yellow lines. jmlicarius. 

 AA. Vertex without distinct yellow lines. 



B. Vertex practically unicolorous. superbus. 



BB. Vertex irrorate, brown and yellow. tessellatus. 



Xestocephalus pulicarius Van D. 



Xestocephalus pulicarius Van D., Bui. Buf. Soc. Nat. Sci., v, pp. 197, 215, 1894. 

 Xestocephalus pulicarius O. & B., Proc. la. Acad. Sci., iv, p. 284, 1897. 

 Xestocephalus pulicarius Osb., 20th Rept. N. Y. St. Ent., p. 515, 1905. 

 Xestocephalus pulicarius Osb., Me. Agr. Exp. Sta., Bui. 238, p. 109, 1915. 

 Xestocephalus pulicarius DeL., Tenn. St. Bd. Ent., Bui. 17, p. 35, 1916. 

 Xestocephalus pulicarius Van D., Cat. Hemip. N. A., p. 621, 1917. 

 Xestocephalus pulicarius Lathr., S. C. Agr. Exp. Sta., Bui. 199, p. 46, 1919. 



Form: The smallest of the three species mentioned. Length, 2.5 to 

 3 mm. Head subconical, vertex rounded, more than twice as broad as 

 long. Pronotum twice as broad as long, half longer than vertex. Elytra 

 large, broad and very long, greatly exceeding abdomen. 



Color: Brown, marked with yellow. Vertex with yellow spots on apex 

 and next each eye, latter connected by an m-shaped line on the disc of 

 the vertex, posterior margin yellow. Pronotum with four yellow anterior 

 submarginal spots and scattered spots on disc. Scutellum with two 

 anterior, median yellow spots. Elytra with many yellow spots of various 

 sizes. 



