O BEITISH CICADA. 



shaped brown patches. Elytra pale hyaline, or shining 

 white, with three dark brown or blackish bands crossing 

 the same. 



Some specimens show their bands disjointed with 

 warm brown, so as to give the insect a mottled ap- 

 pearance. The nervm^es of the elytra cannot always 

 be traced to their terminations, but, not counting the 

 claval suture as a vein, there are five apical and three 

 discoidal cellules, and no limbus. The wings are as 

 in Strongyloccphalus, figures of which may be found on 

 the plates. The antennas rise from deep pits or fovege 

 near to the frons; the basal and second joints being 

 the stoutest and longest ; the setaceous points are 

 finely spined. 



The brachypterous male has a fusiform and shining 

 abdomen, ending in a black cauda, which appears in 

 the centre of a notch. The elytra are about two-thirds 

 the length of the abdomen. Details of the genitalia 

 are on the above plates. 



The female is larger and paler in colour, some being 

 ochreous-yellow, and others of an olive-greenish tint, 

 with an obscure bar across the somewhat corrugated 

 elytra. 



The above descriptions more particularly apply to 

 common forms of this insect. As to the three last 

 synonyms of my list I would note that Mr. Douglas's 

 cabinet contains a specimen labelled Acocephalus polij- 

 stoliis, Fieb., from which my figure is drawn. It 

 measures 0'15 inch, which is rather smaller than the 

 brachypterous male above described. Mr. Edwards, 

 with some reserve, places this and the two previous 

 names" in his synonymy under the head of ^. albifrons. 

 He remarks that both sexes of A. jwlijstol us of Scott 

 are one-third larger than albifrons, and that they occur 

 under Ohione portulacoides in salt marshes. He inclines 

 toth.ehe\iefth^tpohjstohis is a separate species. Of this 

 I am unable, from want of material, to form an inde- 

 pendent opinion. 



Mr. Douglas's insect appears to be too small. 



