British Homoptera-Cicadina. 63 



Pale yellowish, with a dark brown or black streak at the apex of 

 the elytra. Greatest length of the crown in advance of the eyes 

 nearly equal to one-half the entire length down the centre. Hind 

 margin of pronotum roundly notched. Elytra nearly twice as long 

 as abdomen, hyaline ; nerves yellowish, except those of the mem- 

 brane, which are brown ; in the 6th apical area is a brown or black 

 streak, which is sometimes prolonged towards the base. Front 

 pairs of tibiee with a narrow black streak in fi-ont, all the tarsi 

 fuscous at the extreme apex. Abdomen black above, side margins 

 yellow. Length, 4i — 5^^ mm. 



Not common. 



4. Lihiirnia longipcnnis, Curt. 



DelpJiax longipermis, Curt., Brit. Ent., p. and pi. 657. 

 Lihurnia lomjipenms, Scott, Ent. Mo. Mag., vii., 25, 2. 

 Stenocranus longipcnnis, Fieb., Cicad. d'Eur.,pt. iii., 13. 



Male, above brown ; female, pale yellowish. Greatest length of 

 the crown in advance of the eyes about equal to one-third of the 

 entire length down the centre. Hind margin of pronotum angularly 

 notched. Elytra nearly twice as long as the abdomen, in the male 

 brovvm, with the clavus and a stripe on the costa yellow ; in the 

 female hyaline, with yellowish nerves. Front pairs of tibiae in 

 male black, widely pale at the base, all the tarsi black at the apex ; 

 in the female all the tibiae are pale, and the tarsi black at the apex. 

 Length, 4^ mm. 



Not common. 



5. Lihurnia vittipennis, J. Sabl. 



Delphax vittipennis, J, Sahl., Not. Fenn., ix., 1867, 187, 



180 (1868). 

 D. guttuliferus, Kirschb., Cicad., 25, 12. 

 Stenocarcnus guttuliferus, J. Sabl., Not. Fenn., xii., 



416, 2. 

 Kelisia vittipennis, Fieb., Cicad. d'Eur., pt. iii., 23, 7. 

 Lihurnia gidtala, Dougl., sec. sp. comm. 



Crown, pronotum, and scutellum yellowish white, the sides of 

 the two latter widely, a large round spot on the cheeks, and a small 

 round spot on the sides of the prosternum, black. Crown parallel- 

 sided, about one-half longer than its basal width, projecting but 

 very little in advance of the eyes. Pronotum distinctly shorter 



