290 Flemiptera-F1eteroptera. 
Forest Hill, Champion; Glanvilles Wootton, Dale ; Walk- 
ham Valley and Bickleigh Vale, Devon, Bignell. 
O. marginalis, Ment. (nassatus, Fall et Auct.)—Very 
hike favinervis, but rather longer ; basal joint of the antenne 
pale in both sexes; membrane scarcely dusky, nervures 
green; male with the right side of the genital forceps not 
three-pronged, but the left side produced into two long 
prongs, which are very conspicuous. 
L. 6-6} mm. 
On Salix, common. 
O. adenocarpi, Perr. (Douglas?, Saund.).—Of a rather 
bright pale yellowish green, clothed with pale and black 
hairs intermixed, pale hairs largely predominant, black 
hairs easily rubbed off. Antenne testaceous, third and 
fourth joints together shorter than the second, third joint 
about half as long as the second, fourth two-thirds as long 
as the third, rostrum reaching to the intermediate coxe ; 
pronotum transverse, trapeziform, sides and base nearly 
straight; elytra subparallel-sided @, slightly rounded 9, 
membrane slightly dusky, nervures pale yellowish white ; 
tibize with dark spines. 
L.5 mm. ¢, 4mm. °. 
On Broom, Woking, Chobham; Plumstead, Billups ; 
Weybridge, Champion; Shalford, Butler; Perth, Reuter ; 
Forres, Normun. 
O. chloropterus, Ahm. (concolor, Saund. Synops, D. § 
S.; $= virescens, D. § S.).—Very like the preceding, but 
of a darker green and with the membrane much darker, its 
nervures almost concolorous. The third and fourth joints 
of the antenne are much longer taken together than the 
second, the third being nearly as long as the second, and 
the fourth not quite a third as long as the third; the black 
hairs on the surface of the elytra are also much more abun- 
dant; rostrum short and thick, only reaching to Just beyond 
the anterior cox. 
L.5 mm. ¢, 44 mm. 9°. 
