AGALLIA VENOSA. 121 



Genus XXIV.— AGALLIA, Curtis. 



Head with eye broader than the pronotum. Clypeus 

 separated from the frons by a distinct suture. Antennae 

 of the males not clavate. Each antenna springs from 

 a deep depression formed at tlie angle of the tumid 

 vertex and the squarish frons. Elytra semi-coriaceous, 

 broad, non-limbate ; costae arcuate. Some of the usual 

 furcations of the nervures are occasionally wanting, 

 and sometimes the cellules are supernumerary. 

 Abdomen fusiform and pointed. Hind legs multi- 

 spinose. 



The species are small, with brownish red spots and 

 lines on the vertex. One of the British forms is 

 brachypterous. 



Agallia VENOSA, Fall. Plate XXXVI. , figs. 1 to Ic. 



Cicada venosa, Fall. 

 Bythoscopus venosus, Panz. 



Agallia venosa, Flor ; Marsh. ; Kirschb. ; Sahl. ; 

 Scott ; Edw. pt i. p. 127. 



General colour of a dirty ochreous-white. Head 

 broad and obtusely pointed. Pronotum twice longer 

 than the vertex, with five round spots on the upper 

 half and a dark base. Scutellum white. Vertex 

 pointed, with a rusty-red wedge-like mark on the 

 middle, and a smaller red mark on each side. A 

 large black spot occurs near to the wedge, and 

 between it and the eyes. Abdomen brown and flat. 

 Elytra with three or four apical, and three discoidal, 

 cellules. Membrane with brown cloudings and 

 conspicuous nervures. Wings grey. Legs brown, 

 setaceous, and banded with black ; hind tibia3 striped. 

 Frons dirty white, with irregular brown wavy lines 

 and spots. Clypeus with a waving line on each side. 



