British Homoptera-Cicadina. 123 



tlie outer half of the lower boundary of the second subapical area, 

 white. Abdomen above yellow, base of each segment more or less 

 widely black. Legs pale, inner side of hind tibise with a narrow 

 black streak. 



? . Crown and face greyish j^ellow, the former with a black 

 puncture on each side and between them a large brown patch 

 divided down the middle by a pale stripe, some markings across 

 the middle of the face and a line on each side of the frons 

 rust-red. The nerves of the elytra are paler than in the male, 

 and consequently the white parts are less conspicuous. Length, 

 5 mm. 



On poplars ; not uncommon. 



13. Idiocerus aundcntus, Kirschb. 

 Idioccrus anndentus, Kirschb., Cicad., 1G5, 29. 



S' • Crown and face yellow or greyish yellow, on the former 

 near each eye a dark punctui'e. Pronotum yellow-brown, with a 

 more or less distinct central stripe and a suboval spot on each side 

 of the disc pale. Scutellum yellow, with a black or red-brown 

 triangle on each side at the base and a pair of dark points on the 

 disc. Elytra shiny reddish brown ; nerves punctured, dark brown ; 

 apex of the anal nerve, the extreme apex of the claviis, a short 

 piece at the apex of the brachial nerve, and the middle of the lower 

 boundary of the second subapical area, white. Abdomen greenish 

 yellow, dorsal segments widely black at the base. Legs pale, 

 claws black. 



$ . Crown yellow, with a dark puncture near each eye. Face 

 yellow, an ill-defined subquadrate blackish spot in its upper half, 

 temples spotted with rust-red. Pronotum and scutellum as in the 

 male, but the ground colour more decidedly yellow and the 

 markings obsolete. Elytra pale yellow-brown ; nerves punctured, 

 almost concolorous, the white portions much less sharply defined 

 than in the male. Length, 5 mm. 



Lombarcly poplar, Cossey, Norfolk. A very variable 

 species and nearly allied to the preceding, but it does 

 not appear ever to develop the white H so conspicuous 

 on the elytra of that species. 



