68 BRITISH CICAD.E. 



abdomen. The male also occm'S in the Brachelytrous 

 form. 



Found throughout almost all Europe, and common 

 in England. Taken at Malvern, Haslemere, and 

 Norwich. 



Inch. Millimc'tres. 



Expanse 0-32 8-10 



Body 0-12 X 0-04 3-05x1.01 



Genus XII.— STIROMA, Fieh. 



Frontal carinas filiform, four in number. The two 

 middle keels run parallel and meet at the clypeus, or 

 else they fuse into one just before they there meet. 

 Sometimes the keels are faint in their development, 

 and difficult to see. The frons then appears as square 

 and nearly flat, as in Stiroina pteridis. Usually they 

 form four deep ridges on the vertex. Antennse inserted 

 on the cheeks, just below the eyes, the second joint 

 being twice as long as the basal. Pronotum short, and 

 about as wide as the head and eyes together. Meso- 

 notum broad and deep, with a sinuous posterior 

 margin. Scutellum small and semilunar. In the 

 pupal forms, the carinae appear as white cross lines, and 

 mark the edges of the rudimentary elytra. Elytra 

 short, coriaceous, with from five to six apical nervures, 

 which are singly forked (isolement fourchues). Hind 

 tarsi rather shorter than the tibi^i3. The styloid pro- 

 cesses in some species have the form of a fish-tail, 

 but in others they are aculeate, and recurved at the 

 points. 



The species are small and very nimble in their 

 leaps, so as to make it difficult to secure them. 



