British Homoptera-CicadiiKi. 121 



the frout mar^'in irregularly spotted with black. Scutclluin greyish 

 yellow ; a triangle on each side of the base, a tuning-fork- 

 shaped marking and a pair of points on the disc, black. Elytra 

 whitish hyaline with a fuscous tinge, which takes the form of a 

 wide central band reaching from the inner margin about half-way 

 across the disc ; nerves punctured, black, in the fuscous band much 

 thickened ; a small piece at the apex of the anal nerve, sundry 

 pieces of the brachial and lower cubital nerves, and occasionally the 

 first transverse nerve, white ; costa yellow, vertically flattened but 

 without tubercles. Abdomen above black, hind margins of the 

 segments very narrowly pale. Legs pale, tibiae generally with a 

 black line on both the outer and inner sides, thighs with a short 

 black line at the apex. 



$ . Face greyish yellow mottled with rust-red, the upper half 

 of the disc occupied by a large subquadrate fuscous patch, in the 

 lower half of which are some pale spots. Elytra hyaline with a 

 yellow-brown tinge, a fine black line next the costa ; nerves 

 punctured, rust-brown on the corium, on the membrane black, 

 their white markings not so conspicuous as in the male, but similar 

 in position. Length, Gh — 6f mm. 



On sallows ; common. 



10. Idiocerus poecilus, H.-Scff. 



Bytlioscopus poeciliis, H.-Scff., Dents. Ins., 144, 8. 



B.falciger, Boh., Sv. Ak. Handl., 50, 24 (1847). 



Idiocerus pacilus, Kirscbb., Cicad., 159,15. 



I.falciger, J. Sahl., Not. Fenn., xii., 142, 4. 



I. venustus, Scott, Ent. Mo, Mag., x., 239, sec. spec. typ. 



(? . Face greyish yellow, its lower half generally with four wide 

 equidistant black stripes, its upper part variously clouded with 

 fuscous ; in strongly marked examples there is a short black stripe 

 spotted with white next the inner margin of each eye. Crown 

 with a black puncture on each side. Pronotum greyish yellow 

 clouded with fuscous, speckled with black in front, down the centre 

 a wide bluish white stripe. Scutellum greyish yellow ; its base 

 with a short linear stripe between two triangles, and a pan- of spots 

 on the disc frequently followed by a pair of stripes, black. Elytra 

 greyish hyaline ; nerves dark brown or black, those of the corium 

 chequered with white. Abdomen above varying fi'om pale brown 

 to black. Legs pale, thighs generally striped with black, tibiic 

 with a short black stripe on the outer side at the base, the hind 

 pair with a black stripe down the inner side. 



5 . Face gi-eyish yellow, variously clouded and speckled with 

 fuscous or black ; the black stripes of the male represented by a 



TRANS. ENT. SOC. LOND. 1886. PART II. (jUNE.) K 



