British Homoptera-Cicadina. 61 



83 (82). Inner margin of styles, when viewed from 



beliind, with a feeble obtuse tooth just 

 above the middle, and another similar 

 at the apex il. bn'ripciinis. 



84 (81). Hind margin of pygofer without a noteli. 

 8.j (SO). Hind margin of pygofer truncate. Styles 



(viewed from behind) very small and 

 pincer-shaped, occupying little more 

 than one -fourth of the height of the 

 cavity of the pygofer, yellow with 

 the base and tip blackish. Anal tube 

 very large, apparently composed of a 

 pair of pendant lobes, which gradually 

 widen to their truncate apices, where 

 they are generally blackish .. .. i2. strum iiica. 



86 (85). Hind margin of pygofer widely rounded. 



87 (88). Antenna) entirely pale iS. Jhiveola. 



88 (87). Antennffi with the base of the 1st joint 



and apex of the 2nd narrowly black . . 44. 2)(ilii(lo!<a. 



89 (46). Hind tarsi longer than the tibire ; basal 



joint one-half longer than the other 



two together 45. qjeciosa. 



90 (45). Crown not square. 



91 (98). Crown transverse. 



92 (93). Nerves of elytra with large dark granules 46. limhata. 



93 (92). Nerves of elytra without large dark 



granules. 



94 (07). Face with white spots. 



95 (96). Scutellum brown il. Doiiglasi. 



96 (95). Scutellum pale with dark stripes . . 48. lineata. 



97 (94). Face not spotted with white, between the 



keels black 49. unctitata. 



98 (91). Crown pentagonal 50. me^umela. 



1. Libiirnia notula, Germ. 



Delphax notula, Germ., Tlion, Arch., ii., 57, 8 ; Flor, 



Eliyn. Liv., ii., 45, 4 ; Marsh., Ent. Mo. Mag., i., 



220, 5. 

 D. triincatii)cnnis,'Bo\\., Ofv., 266, 12 (1847) ; Kirsclib., 



Cicad., 20, 1. 

 D. lineola, Stal, Ofv., 190, 1 (1854). 

 Mcgamelm notulus, Fieb., Gruiidz. Delph., 519, 4, t. 8, 



fig. 2 (details) ; Cicad. d'Em*., pt. iii., 9, 1 ; J. 



Sahl., Not. Feim., xii., 412, 1. 

 Liburnia notula, Scott, Ent. Mo. Mag., vii., 25, 1. 

 Crown, pronotum, scutellvim, and abdomen above yellow or 

 whitish yellow, sides of the three latter widely blackish brown. 

 Scutellum as long as pronotum. Elytra half as long as abdomen 



