LAWSON: KANSAS CICADELLID^E. 109 



and posterior margins nearly parallel ; elytra macropterous, 

 covering the abdomen in the male and all but the ovipositor in 

 the female, with long apical cells and a narrow appendix, or 

 brachypterous, covering about two-thirds of the abdomen, the 

 apical cells very small ; under wings rudimentary ; venation, the 

 inner branch of the first sector tied to the second sector near its 

 origin, again forking near the middle, its outer form tied to the 

 outer branch beyond its middle, anteapical cells of very dif- 

 ferent lengths." 



One of the two American forms has been taken in Kansas, 

 but both are likely to be found. 



KEY TO SPECIES. 



A. Females larger, 4 mm. or more, greenish-brown, ovipositor well ex- 



seited; males 3 mm. long, black. consobrina. 



AA. Females smaller, 3.5 mm. or less, creamy buff, ovipositor shorter, 



male similar to female in size and color. fratema. 



Memnonia consobrina Ball. 



Memnonia consobrina Ball, Kept. la. Acad. Sci. for 1899, p. 66, pi. 5, figs. 6-10, 1900. 

 Memnonia consobrina Van D., Cat. Hemip. N. A., p. 621, 1917. 



Form: Females larger than males. Former robust, widest at begin- 

 ning of posterior half. Length, 4 to 4.25 mm. Males smaller. Length, 3 

 mm. Vertex twice longer on middle than against eyes, more pointed in 

 males. Pronotum twice wider than long. Elytra covering the abdomen 

 in the males and in some females, leaving part of abdomen exposed in 

 other females. 



Color: Females, vertex, pronotum and scutellum yellowish-green, 

 elytra brownish. Males black with white spots in a row across the ante- 

 apical cells. 



External genitalia: Female, last ventral segment nearly three times 

 as long as preceding, posterior margin emarginate, with a distinct median 

 lobe; pygofers tapering greatly caudad and much exceeded by the ovi- 

 positor which bears a few hairs apically. Male, valve small, triangular, 

 plates together about half as wide as ultimate segment, long, tapering to 

 acute tip; pygofers slightly exceeding plates, bearing large coarse hairs 

 on margins. 



Distribution: Has not yet been taken in the state. 

 Hosts: Ball reports this species as breeding on Schedon- 

 nardiLS texanus and Muhlenbergia gracUlima. 



Memnonia fratema Ball. 



Memnonia fratema Ball, Kept. la. Acad. Sci. for 1899, p. 67, 1900. 

 Memnonia fraterna Van D., Cat. Hemip. N. A., p. 621, 1917. 



Form: Smaller than consobrina, all forms brachypterous. Length, ;i 

 to 3.5 mm. Vertex about two-thirds as long as basal width, pronotum of 

 about the same length. Elytra broad and short, exposing last abdominal 

 segment and pygofers. 



