228 [March, 



ON CERTAIN BRITISH HEMIPTERA-ROMOPTERA. 



BY JOHN SCOTT. 



Desceiption op a species new to Britain. 



aenus IDIOCEEUS, Lewis. 



Species Idioceeus Hetdenii, Kirsclib. 



Idiocerus Seydenii, Karschb., Cicad., 155, 6 (1868). 



? . Pale browuisli-testaceous or somewhat rust coloured. Croum 

 witb two small black spots on the anterior margin, each nearer to the 

 eyes than the centre. Pronotum with a pale, almost white, narrow, 

 central, longitudinal streak, and an oval spot o£ the same colour on 

 each side. Scutellum with a pitchy-brown triangular spot near each 

 basal angle. Elytra : nerves at irregular intervals alternately 

 bro-waiish-testaceous or rust coloured and white. Claims with a large 

 whitish patch around the apex of the central nerve. Corium : nerves 

 of the apical areas pitchy-brown, finely but distinctly punctured. 



Head — crown very pale testaceous with a narrow, almost white central hne, con- 

 tinued on to the frons ; on the anterior margin adjoining each eje a more or 

 less distinct, round, almost white space, margined by pale fuscous, and with a 

 small black spot in the centre. Face : termination of the pale central line 

 enclosed by a more or less distinct brownish patch ; disc with a brown 9 -shaped 

 character. Antennce pale testaceous ; setce similarly coloured. 



Thorax — pronotum pale brownish-testaceous or somewhat rust coloured, with a 

 narrow, longitudinal, almost white central line, and a largish oral spot on each 

 side, as also a few minute ones of the same coloiu* ; at the apex of the anterior 

 margin of the oval spots, a more or less distinct minute black spot. Scutellum 

 somewhat whitish, with a dark ^^ -shaped transverse channel, below which, on 

 each side of the centre, is a pale brownish-testaceous longitudinal streak ; basal 

 angles with a pitchy-brown triangular spot ; disc, above the transverse channel, 

 with a more or less distinct, small, pale brownish-testaceous spot. Elytra palo 

 brownish-testaceous or somcwiiat rust coloured; clavus : inner marginal nerve 

 between the seutellar angle and the apex narrowly pitchy-brown, central third 

 white ; round the apex of the central nerve a somewhat large whitish patch ; 

 disc at the base next the elaval sutiu-e whitish ; corium : nerves alternately but 

 irregularly pale brownish -testaceous or rust coloured and white ; disc irregularly 

 marked (more or less distinctly in different individuals) with whitish patches; an- 

 terior marginal nerveround theapex,and the longitudinal nervcsof the apicalareas, 

 pitchy-brown, the latter finely but distinctly punctured ; nerves of the ante- 

 apical areas posteriorly, finely but distinctly punctured ; appendix ample, pale 

 fuscous. Legs somewhat rust coloured ; thighs : 3rd pair with a narrow, black, 

 longitudinal line along the upper and lower margins of the inside ; tibia : 2nd 

 and 3rd pairs down the inner margin with a black line, exteriorly at the base 

 . brownish ; tarsi : 1st jomt brown ; apex of the 3rd and claws black. 



