LAWSON: KANSAS CICADELLID^. 181 



or obscure, broadly rounding with front, apex rounding. Pronotum twice 

 as long as vertex, lateral margins very short. Elytra long, greatly ex- 

 ceeding the abdomen. 



Color: Pale yellowish-green. Vertex yellowish or pale orange-yellow. 

 Pronotum pale green, the disc darker than the margins. Scutellum 

 greenish-yellow. Elytra greenish-yellow, subhyaline, the black abdomen 

 showing through. Face yellowish. 



Exfervial genitalia: Female, last ventral segment about as long as the 

 preceding, lateral angles broadly rounded and slightly produced, median 

 portion of posterior margin slightly produced, with a semicircular ex- 

 cision reaching about half way to the base; pygofers long, slightly ex- 

 ceeded by ovipositor, sparsely spined on apical third. Male, valve large, 

 semicircular or truncated apically; plates together wider than long, sub- 

 marginally spined, margins practically parallel to the broad, roundingly 

 truncate apices which are slightly exceeded by the pygofers. 



Distribution: The only specimens at hand are from Clark 

 county. This species probably occurs in other southwestern 

 counties. 



Hosts: This is the well-known leaf hopper of the sugar beet. 

 Wherever the latter are grown this species is of great economic 

 importance as shown by Ball's work. 



Eutettix semifiudus (Say). 



(PI. 13, figs. .5-6.) 



Jasmis scmiitinlns Say, Jl. Acad. Nat. Sci. Phila., vi, p. 307, 1831; Compl. Writ., ii, 

 p. 383. 



Bythuxcojius semininlvs Pli., Homop. N. Y. St. Cab., p. 58, 1851. 



Thamnotettix seminudus Uhi., Stand. Nat. Hist., ii, p. 246, 1884. 



Athysanvs seminudus Van D., Psyche, v, p. 389, 1890. 



Eiitettix seminudus Van D., Psyche, vi, p. 307, 1893. 



Eutettix seminudus Osb., 20th Rept. N. Y. St. Ent., p. 529, 1905. 



Eutetfix seminuda Ball, Proc. Dav. Acad. Sci., xii, p. 42, pi. 2, fig. 1, 1907. 



Eutettix seminuda DeL., Tenn. St. Bd. Ent., Bui. 17, p. 66, 1916. 



Eutettix seminudus Van D., Cat. Hemip. N. A., p. 664, 1917. 



Eutettix seminudus Weiss, Ent. News, xxix, p. 310, 1918. 



Eutettix' seminudus Lathr., S. C. Agr. Exp. Sta., Bui. 199, p. 76, 1919. 



Form: Length, 4 to 5 mm. Vertex one-fourth longer on middle than 

 next the eye, two and one-half times as wide as long, a distinct transverse 

 depression just behind the broadly rounding apex. Pronotum scarcely 

 twice as wide as long, lateral margins very short, humeral margins long. 

 Elytra moderately long, venation indistinct. 



Color: Vertex and pronotum creamy white, latter sometimes faintly 

 irrorate with brown. Scutellum white, with basal angles and broad 

 median stripe brown. Elytra milky white, a broad brown saddle across 

 the posterior half of the clavus, a few brown reticulations on the base of 

 the clavus and between the saddle and the brownish apices. Face creamy 

 white. 



