Britiah Ilomoptera-Cicadina. 81 



33. Lihurnia forcipata , Boh. 



Delphaxforcipata, Bob., Sv. Ak. Handl., 57, 23 (1849) ; 



Flor, Eliyn. Liv., ii., 60, 12 ; Kirscbb., Cicad., 



37, 38; Fieb., Grundz. Delpb., t. 8, fig. 33 



( 3 genitaHa). 



Lihurnia forcipata, Scott, Ent. Mo. Mag., vii., 27, 19; 



J. Sabl., Not. Fenn., xii., 461, 26 ; Fieb., Cicad. 



d'Eur., pt. iv., 26, 23. 



Pitcli-black, sliiiiiug ; facial keels, crown, hind margin of pro- 



notum, and base of elytra widely, yellowish, marginal nerve of the 



latter pale. Scutellum one-half longer than pronotum ; side keels 



distinct, diverging. Elytra coriaceous, about one-half as long as 



abdomen, widely rounded behind ; nerves strong, their granulation 



indistinct. Pygofer (male) large, prominent, black, the upper 



notch deep, reaching to the preceding segment, viewed from above 



eUiptic, at least one-half wider across the middle than at its 



opening on the hind margin, its edges forming at their junction 



with the latter an acute angle. Length, 2 — 2imm. 



Macroijterous form. — Scutellima two and a half times as long as 

 . pronotum, flattened towards the apex ; side keels obsolete, slightly 

 cm'ved outwards. Elytra about twice as long as the abdomen, 

 fuscous, somewhat pellucid (male), aqueo-hyahne (female), base 

 yellowish, nerves with small setigerous granules. Length, 

 2^ — 4 mm. 



Woods in spring. 



34. Lihurnia denticanda, Bob. 



Delphax dcnticanda, Bob., Sv. Ak. HandL, 64, 28 

 (1849) ; Flor, Ebyn. Liv., ii., 69, 11 ; Fieb., 

 Grundz. Delpb., t. 8, fig. 46 {S genitalia). 

 Lihurnia denticauda, Scott, Ent. Mo. Mag., vii., 28, 

 32; J. Sabl., Not. Fenn., xii., 456, 22: Fieb., 

 Cicad. d"Eur., pt. iv., 49, 44. 

 3 . Pale brownish yellow, breast and abdomen black, the latter 

 with the hind margin of the last dorsal segment white. Pronotum 

 distinctly shorter than crown, side keels curved outwards. Scu- 

 tellum scarcely one-half longer than pronotum ; side keels acute, 

 strongly diverging. Elytra about half as long as abdomen, pale 

 yellow, pellucid, very finely wrinkled transversely, hind margin 

 truncate with rounded angles ; nerves strong, non-granulate. 

 Margin of upper notch of pygofer, seen from the side, oblique and 

 forming with the sinuate hind margin, which is directed obliquely 



