British Homoptera-Cicadina. 69 



Liburnia clegantula, Scott, Ent. Mo. Mag., vii., 26, 9 ; 

 J. SabL, Not. Fenn., xii., 424, 1 ; Fieb., Cicad. 

 d'Eur., pt. iv., 7, 4. 



L. cemidator, Scott, Ent. Mo. Mag., ix., 238, 8rt, sec. 

 spec. typ. 



Elongate, black ; keels of the head, pronotiim, with the exception 

 of a black patch behind each eye, and apex of sciitellum, wliite. 

 Crown distinctly longer than wide, basal impressions yellow, apical 

 impression very narrow, continued on to the forehead. Scutellum 

 one-third longer than pronotum, side keels distinct, divergmg. 

 Elytra greyish white, pellucid, about half as long as abdomen, apex 

 truncate, with rounded angles, nerves smooth. Abdomen above 

 with a wide brownish yellow central stripe, a narrow whitish dorsal 

 line, and some longitudinal rows of brownish yellow spots on the 

 dark side portions. Legs yellow, femora faintly striped with 

 fuscous. ytyles incurved, subequal iu width, with a strong 

 triangular tooth at the apex withm, and a long process directed 

 backwards at the base. Teeth of anal tube (male) long, acute, 

 diverging, visible from the side. 



$ . Pronotum and scutellum pale brownish or greyish yellow ; 

 abdomen brownish yellow, darker towards the sides, where there 

 are some rows of pale spots, dorsal line whitish. Length, 

 2— 2i mm. 



Macroptcrous form. — Scutellum convex, twice as long as pro- 

 notum, side keels very feeble. Elytra one-half longer than abdo- 

 men rounded at the apex, nerves dirty yellow. Length, 3 — 3-^ mm. 



15. Liburnia distincta, Flor. 



Delphax distincta, Flor, Ebyn. Liv., ii., 68, 17 ; Fieb., 

 Grundz. Delpb., t. 8, fig. 23 (<^ geuitaba). 



Liburnia distincta, Scott, Ent. Mo. Mag., vii., 26, 12 ; 

 Fieb., Cicad. d'Eur., pt. iv., 11, 9. 



L. alhocarinata, J. SabL, Not. Fenn., xii., 426, 2. 



L. cousanguinea, Scott, Ent. Mo. Mag., ix., 239. 



Head black, with white keels, the tv/o basal impressions of crown 

 yellow. Pronotum and scutellum yellow, sometimes with fuscous 

 markings, margins and keels white. Elytra one-half shorter than 

 abdomen, yellowish with white margins, hind margin truncate, 

 angles rounded ; nerves smooth, whitish. Abdomen (male) black, 

 last segment entirely, and pygofer above, broadly pale ; female, 

 black, side margins very narrowly, a fine central line, and the last 

 dorsal segment in the middle, brownish yellow, varying to yellow 

 with a row of dark spots down each side, or entirely yellow except 



