British Homoptera-Cicadina. 77 



long as pronotum, sido keels distinct, slightly curved outwards. 

 Elytra yellowish, subpellucid, one-half longer than abdomen, 

 rounded at the apex, nerves non-granulate. Length, 5 mm. 



27. Lihurnia leptosoma, Flor. 

 Delphax leptosoma, Flor, Ebyn. Liv., ii., 76, 22; Marsh., 

 Ent. Mo. Mag., i., 252, 12 ; Fieb., Grundz. Delpb., 

 t. 8, fig. 34 ((? genitalia). 

 D. Hcijdenii, Kirschb., Cicacl., 37, 39 ( $ ). 

 D. alholimhata, Kirschb., I.e., 32, 27 (a^). 

 D. alhofimhriata, Fieb., Gruudz. Delph., t. 8, fig. 35 



( <y genitalia). 

 Lihurnia leptosoma, Scott, Ent. Mo. Mag., vii., 27, 27; 



Fieb., Cicad. d'Eur., pt. iv., 29, 26. 

 L. alhofimhriata, Scott, I.e., 27, 28. 



^. Face pitch-black, keels sometimes pale. Crown dirty 

 brownish yellow, remainder of upper side shining black, with the 

 pronotum, and occasionally the base of the elytra, dirty white, 

 hind margin of the latter pure white. Elytra half as long as 

 abdomen, hind margin truncate with rounded angles; nerves 

 strong, not perceptibly gi-anulate. Pygofer black margined with 

 white, the upper notch very wide and deep, its sides feebly concave, 

 and its base concealed beneath the preceding segment. Styles 

 diverging, straight, pointed, shinmg black, reaching about half the 

 height of the cavity. 



? . Lighter or darker brownish yellow, hind margin of elytra 

 white. Length, 2—21 ""^a. 



Common. 



28. Lihurnia niveimarginata, Scott. 

 Delphax thoracieus, Marsh., Ent. Mo. Mag., iii., 269, 



nee Stal. 

 Lihurnia niveimarginata, Scott, Ent. Mo. Mag., vn., 



71, 29; Fieb., Cicad. d'Eur., pt. iv., 27, 24. 

 (J. Face and crown pale brownish yellow. Pronotum an d 

 scutellum white. Elytra about half as long as abdomen, apex 

 truncate with rounded angles, hind margin broadly white ; nerves 

 strong, but not perceptibly gi-anulate. Abdomen black, last 

 segment in the middle above and margin of pygofer broadly white. 

 Upper notch of pygofer sharply triangular. Teeth of anal tube 

 long, pointed, vertically contiguous. Styles pale, diverging, some- 

 what lanceolate, reaching the level of the teeth of anal tube. 



