16 BRITISH CICADiE. 



by Dr. Signoret, A. carinatus, the true naming of which 

 Mr. Edwards doubts. The real carinatus should have 

 the vertex in both sexes tricarinate. 



Genus XXX.— PLATYMETOPIUS, Burm. 



Body oblong. Head with the eyes a little narrower 

 than the pronotum. Vertex produced into a more or 

 less acute angle, and forming a carina with its reflexed 

 apex. Elytra ample, with two, or sometimes three, 

 extra trausversenervures dividing the ante-apical areas. 

 Limbus narrow. Wings obscurely clouded, and veined 

 like the Jassidse. The vertex is more strongly ridged 

 in the male. 



Only one British species has yet been described. 



Platymetopius undatus, DeGeer. Plate XLII., figs. 



1 to 3. 



Cicada undata, De Geer, Abh. Gesch. Ins. iii. t. 1, 



fig. 24. 

 Platijmetopius undatus, Flor ; Kirschb. ; Fieb., S. D. 



fig. 64; Thoms.; Sahib.; Scott; Edw. pt, i. p. 26. 



Colour rich yellow. (" Oblongus, saturate flavus." 

 Sahib.) Vertex in the male longer than in the female. 

 Eyes yellow and bordered with brown. Central portion 

 of the vertex and of the pronotum rich brown, the latter 

 slightly striated. Abdomen black, edged with yellow, 

 and showing a yellow curved streak below the scu- 

 tellum. The last ventral rings yellow above. Elytra 

 yellow, unequally and broadly banded with brown at 

 their apices and at their basal edges. When closed, 

 this wavy band forms a conspicuous feature of the 

 insect, and then appears as a kind of double chevron, 

 edged with black, and showing at the suture white 

 spaces near the clavus. The nervures are darker 



