British Homoptera-Cicadina. 101 



One example of var. c was from Scotland, and all the 

 others from Chobham. Although this species is at 

 times excessively abundant here in Norfolk, I have not 

 hitherto met with a variety. 



VIII. LEDEID^. 

 Characters those of the single genus. 



Ledra, Fab. (PI. I. fig. 25). 

 Fab., Sys. Rhyn., 24 (1803). 

 Crown foliaceous in front, its front margin bluntly angular in the 

 middle and forming a distinct obtuse angle near each eye. Eyes 

 small, globose. Ocelli near the base of the crown nearly twice as 

 far from the eyes as from each other. Elytra siibcoriaceous. Outer 

 edge of hind tibiae produced in a flattened knife-like form, serrato- 

 dentate and densely ciliate. 



1. Ledra aurita, Linn. 



Cicada aurita, Linn., Sys. Nat., 706, 7. 



Membracis aurita, Fab., Ent. Sys. iv., 11, 15 ; Panz., 



F. G., 50, 18. 



Ledra aurita, Fab., Sys. Ehyn., 24, 1 ; Germ., Mag. 



d'Ent., iv., 54, 1 ; Fall., Hem. Suec, ii., 9, 1 ; 



Burm., Handb., ii., 116, 16 : Gen, Ins. descr. and 



pi. ; Curt., Brit. Ent., p. and pi, 676 ; Kirschb., 



Cicad., 71, 1 ; J. Sahl., Not. Fenn., xii., 103, 1. 



Lighter or darker brown with a greenish tinge, elytra paler 



towards the apex, with a broad indistinct pale band before the 



middle, and traces of a pale subtriangular spot on the costa just 



before the apex. Abdomen above black (male) or brownish yellow 



(female). Upper side roughly punctured with brown. Crown 



tricarinate, the side keels abbreviated. Pronotum in front and 



between the processes and the scutellum behind transversely 



wrinkled. Nerves of elytra brown, strongly raised. Length, 



13—18 mm. 



On oaks ; not very common. 



IX. ULOPIDiE. 

 The characters coincide with those of the single genus. 



