British Homoptera-Cicadina. 77 
Head yellow, basal markings roundish; interocular line widely 
interrupted in the middle; on the forehead a pair of large roundish 
subquadrate or oblong black spots; frons with black side-lines. 
Pronotum yellow, sometimes suffused with blackish. Scutellum 
yellow, sometimes with a subtriangular black spot on each side of 
the base. Elytra yellowish grey, subpellucid without markings, or 
' subcoriaceous with a greater or lesser number of the areas each 
occupied by a fuscous streak; membrane sometimes smoky. 
Abdomen black, yellow at the apex beneath. Legs yellow, with 
black lines and points. Length, 2;—6 mm. 
Excessively abundant amongst grasses. Very variable 
in size and markings, and also in the dimensions of the 
crown; the markings on the latter are subject to almost 
any amount of exaggeration, reduction, or suppression. 
J. Sahlberg nearly exhausts the alphabet in furnishing 
distinctive letters for the varieties which he characterises. 
vii. GNatHopus, Fieb. (Pl. II., fig. 18). 
Fieb., Neue Gatt. und Art. Hom., 9, 21 (1866). 
Body oblong, obtuse in front, much narrowed behind. Crown 
very short, about one-fourth as long as the pronotum, scarcely 
longer in the middle than at the sides. Elytra much longer than 
the abdomen, overlapping at the apex ; outer branch of the cubital 
nerve obsolete; membrane very large, as long as the inner margin 
of the clavus; appendix large. Submarginal wing-nerve com- 
plete; upper branch of the second wing-nerve confluent with the 
first, and running into the submarginal nerve as one nerve; third 
wing-nerve joined to the lower branch of the second by a trans- 
verse nerve. 
1. Gnathodus punctatus, Thunb. 
Cicada punctata, Thunb., Act. Ups., vi., 21, 36; Fall., 
Hem. Suec., ii., 55, 52. 
Eupteryx clypeata, Curt., Brit. Ent., 640, 12. 
Cicadula punctata, Zett., Ins. Lap., 298, 10. 
C. spreta, Zett., l.c., 298, 11. 
Jassus punctatus, H.-Seff., Deuts. Ins., 122, 6; Flor, 
Rhyn. Liv., ii., 320, 3; Marsh., Ent. Mo. Mag., 
Iisa aay. oo. arselb.. Creag... 90). Ub: Thoms,, 
Opuse, Hnt.;' 1.5.41, Ca 
Gnathodus punctatus, J. Sahl., Not. Fenn., xii., 204, 1; 
Ferrari, Cicad. agri Ligust., 44, 1 and 45, 107. 
