British Homoptera-Cicadina. 109 



9 (20). Species not pale green. 



10 (17). Face spotted with black. 



11 (14). Nerves darker than the elytra. 



12 (13). Nerves not suffused with fuscous 



13 (12). Nerves at the base of the subapieal areas con- 



spicuously suffused with fuscous 



14 (11). Nerves concolorous. 



15 (IG). Wider and less pointed in front ; elytra with- 



out fuscous bands 

 IG (15). Narrower and more pointed in front ; elytra 

 with two wide ill-defined fuscous bands . . 



17 (10). Face unspotted. 



18 (19). Costa narrowly brown. Inhabits elm 



19 (18). Costa concolorous. Inhabits sallow . . 



20 (9). Species pale green 



1. Pediopsis tilia, Germ. 



Jassus tilife, Germ., Faun. Eur., 14, 14 



Pedioims tilixe, Flor, Ehyn. Liv., ii., 183, 1 ; Kirschb., 



Cicad., 176, 9 ; Fieb., Eur. Bythosc, 457, 1 ; 



Tboms., Opusc. Ent., iii., 317, 1 ; J. Sabl., Not. 



Fenn., xii., 118, 1 ; Scott, Ent. Mo. Mag., x., 



128, 1. 



Head and pronotum greenish yellow. Scutellum and elytra 

 yellow-browu, the latter generally iri'orated with darker brown, 

 especially towards the apex ; on the inner margin beyond the apex 

 of the clavns a whitish spot followed by a dark brown one. 

 Abdomen above black, hind margin of the segments narrowly pale, 

 beneath yellow. Legs yellow-brown. Length, 5 — 5rV mm. 



Bare. Esber, in June. Said to occur on Tilia parvi- 

 folia. 



2. Pediopsis nanus, H.-S. 



Bythoscopus nanus, H.-Scff., Deuts. Ins., 143, 6. 

 Pediopsis nanus, Flor, Rhyn. Liv., ii., 192, 6 ; Kirschb., 



Cicad., 173, 5; Fic"b., Eur. Bythosc, 461, 12; 



J. Sahl., Not. Fenn., xii., 136, 16; Scott, Ent. 



Mo. Mag., X., 235, 11. 



J . Body black, face generally with a stripe on its lower half 

 and the free side margins narrowly yellow. Hind margin of the 

 crown narrowly, sides and hind margin of the pronotum, and the 

 hind margin of the scutellum irregularly, whitish. Elytra lactco- 



