IDlOCERUS FULGIDUS. 107 



since as many as nine species are to be taken on the 

 botanical genus Poimlus, and five at least on the genus 

 Salix. 



Mr. Edwards tabulates the Idioceri partly with 

 reference to the forms of the first and second apical 

 areas of the elytra. He then broadly, for the purpose 

 of identification, takes note of the presence of trans- 

 verse bandings on the alary organs, or the absence of 

 the same. 



For the purposes of a preliminary examination I 

 have also drawn up a table which may afford some 

 additional help. In a general manner Idiocerus may be 

 separated from Pediopsis by an attention to the greater 

 width of the head and eyes taken together, as above 

 noted. 



Idiocerus fulgidus, Fah. Plate XXXI., figs. 2 to Id. 



Cicada fidgida, Fab. 



Jassus fulgidus, Fab., Germ. 



Idiocerus ochroleucus, Kirschb. 



,, minki, Kirschb. 



,, fulgidus, Edw. pt. i. p. 124. 



Fine orange-yellow. Vertex often of a paler brown, 

 and immaculate. Antennae of the males clavate. 

 Scutellum as deep as the pronotum, with two triangular 

 basal patches, and two more or less faint spots on the 

 disc. Elytron bright yellow, rather smoky towards 

 the apex ; nervures darker yellow, but whitish towards 

 the claval suture. Abdomen black. Legs fine yellow, 

 with yellow setae on the hind tibiae. Claws black. 

 Frons pale yellow, and indented below the eyes. 

 Centre of the frons stained irregularly w'ith red. The 

 pygofer of the male is remarkable in form. A long 

 tube with a cleft and a plumose bristle issues from 

 below the cauda. The lower valve is biarticulate and 

 pilose. 



The female is larger and of a greener shade, and 



