50 Mr. James Edwards' Synopsis of 



all the forms pale, with the apex and a more or less distinct median 

 ring dark brown ; hind tibiae narrowly dark at the extreme apox 

 only. Length, 6 — 7 mm. 



Not uncommon in the south. 



V. CIXIID^. 



Body wide, depressed. Head with the eyes distinctly narrower 

 than the pronotum. OcelU 2, on the sides of the head with an 

 indication of a third near the apex of the middle facial keel. 

 Pronotum vei'y short, strongly subangularly notched behind. 

 Elytra ample, hyaline, widely rounded at the apex, subhorizontal 

 nerves strongly raised. First joint of hind tarsi elongate. 



The two British genera may be thus distinguished : — 



Scutellum with five keels . . . . . . . . i. Oliarus. 



Scutellum with three keels . . . . . . . . ii. Cixids. 



i. Oliarus, Stal. (PI. I., fig. 15). 

 Stal, Berl. ent. Zeit., vi., 306 (1862). 



Hind margin of crown angularly notched. Nerves of the elytra 

 without the large black granules so conspicuous in the following 

 genus. 



Crown longer than wide . . . . . . . . 1. 2''nUidus. 



Crown transverse . . . . . . . . . . 2. Icporinns. 



1. Oliarus pallidiis, H.-S. 



Flata pallida, H.-S., Deuts. Ins., 144, 4. 



Cixius leporinus, Curt., Brit. Ent., 673, 9. 



Oliarus pallidus, Scott, Ent. Mo. Mag., vii., 119, 1; 

 Fieb., Cicad. d'Eur., pt. ii., 197, 9. 



O. leporiniLs, J. Sahl., Not. Fenn., xii., 385, 1. 



Crown about one and a half times as long as broad, its breadth 

 somewhat less than the length of the hind margin of the eye ; 

 black, with pale keels. Eyes red. Pronotum black, with white 

 keels and hind margin. Scutellum black. Elytra lacteo-hyaline, 

 stigma well marked, nerves fine pale fuscous ; angular nerves and 

 those beyond much darker, almost black. Legs pale, front pairs 

 of tarsi and the claw-joint of the hind pair black. Length, 

 5 — G mm. 



"Coarse grass by the side of the Avon, Clifton." — 

 Curtis. 



