LAWSON: KANSAS CICADELLIDjE. 81 



Genus ONCOMETOPIA Stal. 



The members of this genus have a distinct ledge over the 

 antennal socket. The eyes are prominent, making the head 

 wider than the pronotum. Vertex is rounded and obtusely 

 joined to the front. Pronotum is short, four-angular, the an- 

 terior and posterior margins nearly parallel, lateral margins 

 slightly narrowed behind. Elytra long and narrow, not cover- 

 ing abdominal terga. Anterior tibiae are slightly sulcate above. 



Two species and one variety of this genus have been found 

 in the state. 



KEY TO SPECIES 



A. Size large, 12 mm. or more, cross nervure cephalad of fork of first 



sector. undata. 



AA. Size smaller, 9 mm. or less, cross nervure caudad of fork of first 



sector. lateralis. 



Oncometopia undata ( Fabr. ) . 



(PI. 7, figs. 1-3.) 



Cicada undata Fabr., Ent. Syst., iv, p. 32, 1794. 

 Cicada rbona Fabr., Ent. Syst., Suppl., p. 530, 1798. 

 Tettig n a undata Germ., Mag. d. Ent., iv, p. 61, 1821. 

 Proco i undata Walk., List Homop., iii, p. 783, 1851. 

 Proco i nigricann Walk., List Homop., iii, p. 783, 1851. 

 Proco i clarior Walk., List Homop., iii, p. 784, 1851. 

 Proco i lucernea Walk., List Homop., iii, p. 785, 1851.. 

 Proco i marginata Walk., List Homop., iii, p. 785, 1851. 

 Proco 10 badia Walk., List Homop., iii, p. 786, 1851. 

 Proco ia xcutellata Walk., List Homop., iii, p. 786, 1851. 

 Proco ia tenebrona Walk., List Homop., iii, p. 787, 1851. 

 Proco ia plagiala Walk., List Homop., iii, p. 788, 1851. 



Tettigonia undata Sign., Ann. Soc. Ent. FT., ser. 3, ii, p. 486, pi. 17, fig. 5, 1854. 

 Oncometopia undaia Stal, Hemip. Fabr., ii, p. 62, 1869. 



Oncometopia vndata Woodw., Bui. 111. St. Lab. Nat. Hist., Hi, p. 15, pi. 2, figs. 10-14, 

 1887. 



Gyponaf badia Va 

 Oncometopia undo 



1899. 



Oncometopia undt 



D., Ent. News, v, p. 157, 1894. 

 a Fowl., Biol. Centr. Am., Homop., ii, p. 231, pi. 14. figs. 19, 20, 



a Ball, Proc., la. Acad. Sci., viii, p. 41, 1901. 



Oncometopia unda 

 Oncometopia unda 



a Osb., 20th Kept. N. Y. St. Ent., p. 509, 1905. 



a DeL., Tenn. St. Bd. Ent., Bui. 17, p. 18, 1916. 



a Van D., Cat. Hemip. N. A., p. 591, 1917. 

 Oncometoiria undata Ols., Bui. Am. Mus. Nat. Hist., xxxviii, p. 2, 1918. 

 Oncometopia undata Lathr., S. C. Agr. Exp. Sta., Bui. 199, p. 28, 1919. 



Form: A large, almost parallel-sided form. Length, 13 mm. Head 

 broad, with prominent eyes. Vertex with sides very broadly rounded, 

 very obtuse at apex, about two-thirds as long as basal width. Pro- 

 notum half wider than long, elevated. Elytra long and narrow, claval 

 veins slightly approaching each other and usually with a cross nervure. 



Color: Vertex, anterior margin of pronotum and scutellum rusty 

 orange. Vertex with an incomplete black circle from which run out six 

 or eight radiating lines. Scutellum also marked with dark lines. Pro- 



6 Sci. Bui. 3058 



