68 Mr. James Edwards' Sjinopsis of 



about half as long as abdomen, separately rounded at apex, pale 

 yellow with white margins. Abdomen (male) blackish, with the 

 margins, a dorsal stripe, and a few short lines towards the sides 

 behind, rust-red ; female, yellow faintly marked with fuscous, each 

 dorsal segment with a transverse row of dark points interrupted 

 in the middle. Styles hooked outwardly at apex, teeth of anal 

 tube apparently crossing each other. Anal tube and its style 

 entirely pale. Length, 2 — 2| mm. 



Macropterous form. — Scutellum twice as long as pronotum, side 

 keels obsolete, diverging. Elytra more than one-half longer than 

 abdomen, yellowish hyaline; nerves smooth, whitish yellow behind. 

 Length, 3 — 3i^ mm. 



13. Liburnia sordidida, Stal. 



Delphax sordidida, Stal, Ofv., 174, 2 (1853) ; Kirschb., 



Cicad., 29, 19 ; Fieb., Grundz. Delpb., t. 8, fig. 



26 ((^ genitalia). 



Liburnia sordidida, Scott, Ent. Mo. Mag., vii., 26, 11 ; 



J. Salil., Not. Eenn., xii., 434, 7 ; Fieb., Cicad. 



d'Eur., pt. iv., 17, 14. 



Pale yellow ; facial keels, a stripe along the crown pronotum 



and scutellum, and the marginal nerve of elytra, white. Facial 



keels narrowly and obsoletely margined with fuscous in the male. 



Scutellum nearly twice as long as pronotum. Elytra yellowish 



hyahne, narrowly rounded at the apex, one-third (male) or one-half 



(female) shorter than abdomen, nerves smooth. Abdomen (male) 



blackish, with the side margins, the dorsal line, and some u-regular 



spots towards the apes, rust-red ; female, yellow, sometimes with 



a row of dark spots on each side, or otherwise marked with black. 



Styles subulate, their ciliate inner margin with a strong sharp 



tooth near the base. Length, 3 — Sh mm. 



Macropterous form. — Scutellum two and a half times as long as 

 pronotum. Elytra two-thirds (male) or one-half (female) longer 

 than the abdomen, nerves darker towards the apex. Length, 

 4 — 5 mm. 



Female sometimes entirely pale. 



14. Liburnia elegantida. Bob. 



Ddphax (deqanttda. Bob., Sv. Ak. Handl., 63, 27 

 (1849) ;' Flor, Rbyn. Liv., ii., 70, 18 ; Marsb., 

 Ent. Mo. Mag., i., 252, 11 ; Kirscbb., Cicad., 

 26, 6; Fieb., Grundz. Delpb., t. 8, fig. 22 

 ((? genitalia). 



