British Homoptera-Cicadina. 91 



long as abdomen, with a more or less broad smoky streak along the 

 mner margin, nerves brown, non-granulate. Length, 2^ — 4 mm. 



Shiere, near Guildford, &c. ; in grassy places in spring. 



49. Liburnia uncinata, Fieb. 



Delphax uncinata, Fieb., Grundz. Delph., 524, 1, t. 8, 

 fig. 11 (details). 



Liburnia imcinata, Scott, Ent. Mo. Mag., vii., 28, 36 ; 

 Fieb., Cicad. d'Eur., pt. iv., 7, 5. 



<?. Face and crown black, keels yellowish. Pronotum and 

 scutellum yellowish grey with white keels. Elytra dusky, in the 

 macropterous form much longer than the abdomen, nerves with 

 brown granules, costa and inner margin pale ; membrane slightly 

 darker, its marginal and other nerves brownish yellow. Abdomen 

 orange at the base, the other dorsal segments black with white 

 margins. Outhne of pygofer, viewed from behind, roundish ; 

 upper notch wide-oval, apical angles acute, strongly inciirved, its 

 oblique margin, viewed from the side, forming with the hind 

 margin, which is somewhat sinuate and directed obliquely down- 

 wards and forwards, a large angular incurved black-pointed tooth ; 

 lower notch semicircular bordered with white. Teeth of anal tube 

 not apparent. Styles brown, nearly reaching the tooth on the hind 

 margin of the pygofer, wide, lanceolate, then- outer margin convex, 

 inner margin sinuate, pilose. Length, 3 mm. 



$ . This sex was apparently unknown to Fieber, but it is thus 

 characterised by Scott :—" The space between the keels on the 

 crown, face, and clypeus smutty or black, keels of the two latter 

 yellowish white. Elytra sordid yellow, distinctly granulated. 

 Abdomen sordid yellow, the margins of the segments more or less 

 broadly black." 



Pitlochry, Perthshire ; on grass in woods. 



50. Liburnia mesomela, Boh. 

 Delphax mesomela, Boh. Sv. Ak. Handl., 257 (1849) ; 



Flor, Ehyn. Liv., ii., 50, 6; Kirschb., Cicad., 



35, 33. 

 Delphaciniis mesomelus, Fieb., Grundz. Delph., t. 8, 



fig. 12 (details) ; Cicad. d'Eur., pt. iii., 25, 1 \ 



J. Sahl., Not. Fenn., xii., 421, 1. 

 Liburnia mesomela, Scott, Ent. Mo. Mag., vii., 29, 41. 



(J. Crown, pronotum, scutellum, and elytra white; abdomen 

 deep black, the last two segments margined with white; legs black, 



