BritisJi Homuptera-CicadiiM. 125 



J . Legs and under side yellowisli grey. Pronotnni and 

 scutcUnin as in the male. Nerves of corium hyaline. Abdomen 

 above widely black down the middle. Length, 5 — 5\ mm. 



Not uncommon, but apparently confined to Popidiis 

 tremula. The female, when mature and fresh, frequently 

 has the face and legs tinged with a fine pink colour. 



16. Idiocerus confusus, Flor. 



Idioceriis confusus, Flor, Rhyn. Liv., ii., 179, 9; 

 Kirschb.; Cicad., 164, 26 ; J. Sahl., Not. Fenn., 

 xii., 150, 11. 



(? . Crown, face, and legs yellow, frons sometimes dusky. 

 Pronotum and scutellum greenish yellow. Elytra hyaline, with a 

 faint fuscous tinge, which becomes brownish yellow on the inner 

 margin ; nerves punctured, concolorous or paler than the disc ; 

 costa pale green. Abdomen above black, beneath greenish yellow. 

 Claws black. 



5 . Larger and paler. Abdomen above widely black down the 

 middle. Length, 5h — 6^ mm. 



On sallows ; common. Easily recognised when fresh 

 by its pale greenish grey colour. 



17. Idiocerus albicans, Kirschb. 



Idiocerus albicans, Kirschb., Cicad., 165, 27. 



Head, pronotum, and scutellum greenish white ; face sometimes 

 with a yellow tinge in the male, in which sex also there is some- 

 times a black puncture near each eye and a black triangle on each 

 side of the base of the scutellum. Elytra whitish hyaline, some- 

 times with a faint reddish brown tinge near the inner margin in 

 the male ; nerves white, the apices of those on the membrane and 

 the marginal nerve of the latter blackish. Dorsal segments of the 

 abdomen narrowly black at the base (male) or entirely pale (female). 

 Length, 5^- — G! mm. 



Common on white poplar. 



V. ArjALLiA, Curt. (PI. II., fig. 5). 



Curt., Ent. Mag., i., 193 (1833). 



Crown widely rounded in front. Clypeus, clieeks, lorai, and 



frons separated by distinct sutures. Frontal suture not reachii^g 



the ocelli. Antennal seta never clavate in the male. Species 



small, dirty white, with black or brown markings. 



