British HomoiUera-Cicaclina. 



45 



26 (25) 



27 (28) 



28 (27) 



Antennro inserted between the eyes. 



Hind tibiffl cylindric, with two spines 



Hind tibia3 not cylindric. 



Pronotum with a compressed ear-like 

 process on each side . . 



Pronotum withqut any process. 



Hind tibioB unarmed, or only with weak 

 bristles on the angles. 



Frons convex, swollen . . 



Frons flat, depressed on its upper half 



Hind tibiaj multispinose. 



Ocelli on the frons 



Ocelli not on the frons. 



Ocelli on the disc of the crown 



Ocelli not on the disc of the crown. 



Crown always distinctly separated from 

 the face, generally by a well-defined 

 border, its disc more or less excavated 

 or bearing impressions, frequently 

 rugose in front parallel with the 

 forehead, or at least distinctly sculp- 

 tured . . 



Crown and face passing gradually the 

 one into the other. Disc of the 

 former never distinctly excavated, 

 nor bearing impressions, nor rugose 

 in front parallel with the forehead, 

 rarely perceptibly sculptured. 

 , Elytra with one or more transverse 



nerves . . 

 . Elytra without transverse nerves 



Vn. CERCOPIDai. 



VIH. Ledbid^e. 



IX. ULOPIDffl. 

 X. PAROPIIDffl. 



XL BYxnoscopiDa!. 

 XII. Tettigonid/e. 



XIII. ACOOEPHALID^. 



XIV. Jassid;e. 



XV. TvPHLOCYBIDiK . 



I. CICADID^. 



Head short, wide. Frons very convex. Ocelli 3, on the crown. 



Tegulae wanting. Hind coxae subconic, not reaching the sides of 



the breast. Tibiae cylindric. No pulvilli between the claws. 



Male with a pair of stridulating organs at the base of the abdomen. 



CiCADETTA, Am. (PI. I., fig. 10). 



Am., Ann. Soc. Fr., 2nd ser., v., 156, 377 (1847). 

 Antennae inserted in a strong depression beneath a fold of the 

 temples, apparently 7-jointed, by reason of the articulation of the 

 robust seta. Elytra lanceolate, much longer than the abdomen, 

 membranous, hyaline ; apex with a narrow, free margin ; nerves 

 strong, raised. Basal area of corium oblong, narrow, the brachial 

 and cubital nerves springing from its lower apical angle ; apical 

 areas 8, narrow, 1st reaching further inwards than 2ud, which is 



