132 BRITISH CICADiE. 



Head, pronotum, scutellum, and the ground-tint of 

 the elytra almost white, or else pale buff. Vertex 

 either plain or with an orange cross- streak. Pronotum 

 with a central orange spot, half surrounded by a horse- 

 shoe shaped yellow band. Scutellum with two reddish 

 basal triangles. Abdomen pale brown, and furrowed. 

 Legs pale greenish or light yellow. Clavus with three 

 large roundish oraiige-red spots. Lower half of the 

 corium with three or more large irregular patches of 

 the same yellow colour. Apical part of the elytron 

 with brownish areas, margined with white. Three or 

 four irregular brown lines occur on the costa. 



Eather common on oaks from May to September. 

 Huddersfield ; Haslemere ; and other places. 





luch. 



Millimetres, 



Expanse 



0-23 



5-84 



Body alone 



0-09 



2-28 



Typhlocyba geometrica, Schr. Plate LXIX., 

 figs. 3 to 3«. 



Cercopis geometrica, Schrank. 



Tettigonia geometrica, Germ. 



Cicada lineateUa, Fall. 



Cicadula lineateUa, H.-Schaff. 



Typhlocgha plagiata, Hardy. 



T. geometrica, Flor ; Kirschb. ; ^ahlb. 



Eupteryx geometrica, Marsh. 



Anomia geometrica, Lethierry ; Fieb. 



Typhlocgha geometrica, Edw. pt. ii. p. 103. 



General colour pale yellow. Vertex and pronotum 

 almost spotless. Scutellum with a largish brown 

 cordate mark, having an internal yellow one. Elytron 

 with a straight and widening brown line, which divides 

 the corium from the clavus. Apical areas fumose, and 



