16 BRITISH CICADA. 



(Scutellum with five carinae. 

 Oliarus. j Ocelli three. 



(Elytra without bands or neural spots. 



/Scutellum with three carina. 

 Cixius. ] Ocelli two. 



(Elytra with dark bands and neural spots. 



Genus I.— OLIARUS, Shd. 



Head with eyes distinctly narrower than the pro- 

 notum. Ocelli two on the sides of the head, near the 

 lower margin of the eyes ; with a third ocellus near 

 the middle frontal keel. Pronotum very short, strongly 

 notched laterally. Side keels somewhat circular. 

 Scutellum very large, comprising the greater part of 

 the thorax. Teguhie small, but distinct. Abdomen 

 large and depressed, rounded at the apex, and pro- 

 vided with a blunt style. Anal tube in the male 

 subfoliaceous, dilated at the sides, and bent into an 

 arch, " fornicato-deflexis " (Sahlberg). 



Oliarus pallidus, H.-Scliaff. Plate IV., fig. 1. 



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

 Cixius leporimis, Curt. 



Oliarus pallidus, Scott, Fieb. C. E., pt. ii. 197 ; 

 Edw. 50. 



,, leporinus, Sahl. 



Crown and vertex about one and a half times as 

 long as broad, its breadth being less than the length 

 of the hind margin of the eye (Edwards). Pronotum 

 black, with five pale keels. Elytra hyaline, without 

 either bands or spots ; rounded at the tips, and pro- 

 vided with sub-horizontal nerves, strongly raised. 

 Angular nerves almost black. 



Curtis first noted this insect in his * Brit. Ent.' 673, 

 and he recorded its abundance on coarse grass, by the 

 side of the Paver Ayon, near Clifton. Mr. Dale cap- 

 tured the insect whilst sweeping grasses on downs 



