British Homoptera-Cicadina. 89 



9 . Sciitellum scarcely twice as lone; as pronotnm. Elytra 

 about one-half as long as abtlomeu, yellowish hyaline, without 

 black markings, apex obtusely rounded. Abdomen brown or 

 yellow-brown with a darker lateral stripe, sometimes with a pale 

 dorsal line. Length, 3^ — 5 mm. 



On Phragmites communis. 



46. Liburnia limbata, Fab. 



Delphax limbata, Fab., Sys. Khyn., 84, 5 ; Boh., Sv. 

 Ak. Handl., 60, 31 (1847) ; Flor, Rbyii. Liv., ii., 85, 

 29 ; Marsh., Ent Mo. Mag., i., 226, 6 ; Kirschb., 

 Cicad., 36, 35. 

 D. signifera, Boh., Ofv., 164, 30 (1845). 

 D. palliata, Boh., Sv. Ak. Handl., 56, 22 (1849). 

 D. anceps, Germ., Mag. d'Ent., iv., 105, 10 ; SchJiff., 



Nom. Ent., i., 65. 

 D. pictipennis, Curt., Brit. Ent., 657, 7. 

 Conomelus limbatus, Fieb., Grundz. Delph., t. 8, fig. 



10 (details) ; Cicad. d'Eur., pt. iii., 39, 1. 

 Liburnia Iwibata, J. Sahl., Not. Fenn., xii., 467, 30 ; 



Scott, Ent. Mo. Mag., vii., 29, 39. 

 Fore parts above yellow, elytra whitish hyaline with a faint 

 lilac tinge, hind margin brown, nerves with large remote black 

 granules. Abdomen blackish brown with some transverse rows of 

 pale spots. Crown, pronotum, and scutellum subequal in length. 

 Elytra less than half as long as abdomen, their apex truncate. 

 Length, 2^—3 mm. 



Macropterous form. — Crown and pronotum yellow, scutellum 

 yellow-brown, elytra whitish hyaline with a faint lilac tinge ; a 

 short hne near the apex of the clavus, a broad curved band on the 

 membrane (its convexity to the inner margin), the nerves of the 

 latter, and the conspicuous granulation of all the nerves, black. 

 Scutellum more than twice as long as pronotum, side keels obsolete. 

 Elytra nearly twice as long as abdomen. Length, 3^ — 4 mm. 



Excessively abundant amongst rushes ; the macro- 

 pterous form scarce. 



47. Liburnia Dotu/lasi, Scott. 



Liburnia Douqlasi, Scott, Ent. Mo. Mag., vii., 72, 38 ; 



Fieb., Cicad. d\Eur., pt. iv., 30, 27. 

 (?. Crown, forehead, and pronotum yellow. Face blackish, 

 spotted with white between the keels, middle keel acute, obsolete 

 TEANS. ENT. SOC. LOND. 1886. — PART II. (JUNE). H 



