British Homoptera-Cicadina. 83 



36. Lihurnia vcnosa, Germ. 



Delphax vcnosa, Germ., Thon. Arch., ii., 57, 5. 



D. rhypara, Flor, Ehyn. Liv., ii., 48, 5. 



D. nitidala, Kirscbb., Cicad., 36, 36. 



Lihurnia vcnosa, Scott, Ent. Mo. Mag., vii., 26, 18 ; 



Fieb., Cicad. d'Eur., pt. iv., 35, 30. 

 L. curtula, J. Sabl., Not. Fenn., xii., 450, 18. 



Fore parts lighter or darker pitch-brown, abdomen black. Elytra 

 and legs yellow-brown ; nerves of the former strongly raised, black. 

 Crown rectangular, a little longer than wide, its keels strong. 

 Pronotum a trifle shorter than the crown, its side keels straight, 

 strongly diverging, but reaching the hind margin. Scutellum very 

 little longer than the pronotum. Elytra about two-thirds as long 

 as the abdomen, widely rounded at the apex, entire marginal 

 nerve black (PL I., fig. 8). 



Macropterous form, — Scutellum one and a half times as long as 

 pronotum. Elytra dirty whitish hyaline, finely wrinkled trans- 

 versely, nearly twice as long as abdomen ; nerves dark brown, 

 strongly raised. Length, 1^1 — 2 mm. 



At roots of coarse grass and rushes. Easily dis- 

 tingiiisbed from our other black species by its small size, 

 and the .side keels of the pronotum reaching the hind 

 margin. 



37. Lihurnia insignis, Scott. 



Lihurnia insignis, Scott, Ent. Mo. Mag., xviii., 270. 



(? . Pale yellowish, abdomen pitch-black, shining, with a large 

 yellow or brownish yellow transverse patch on the upper side at 

 the base, hind margin of the last fom- segments very narrowly 

 brown, down the centre of each a short narrow streak not reaching 

 the front margin, hind margin of the last segment broadly white. 

 Side keels of pronotum somewhat indistinct, disc on each side of 

 the centre somewhat depressed. Keels of scutellum distinct, 

 somewhat acute. Elytra about half as long as abdomen, their 

 apex flatly rounded ; nerves fine, non-granulate. Legs yellow, 

 thiglis fuscous at the base. Pygofer black, shining ; viewed from 

 the side the hind margin is produced into a flat isosceles-angular 

 form, and has a short curved acute tooth at the lower extremity ; 

 viewed from behind the pygofer appears almost circular, margins 

 of the upper hah folding down inwardly and forming two triangular 

 flaps, leaving a small space between their edges down the centre. 



