DICRANOTROPIS HAMATA. 07 



Macropterous male. Body cylindrical. Head and 

 eyes as broad as the pronotum. Vertex round, yellow, 

 with three black streaks marking the position of the 

 yellow keels. Two small dots occur at the posterior 

 margin, followed by two larger similar ones on the 

 pronotum. Pronotum white, with two scale-like marks 

 on the shoulders. Scutellum yellow, and nearly three 

 times the length of the pronotum. Four pale brown 

 streaks mark the seats of the keels, which are nearly 

 obsolete. Metathorax yellow. Abdomen brown, with 

 one dorsal and numerous transverse yellow bars ; a 

 dark round spot occurs below the point of the scutel- 

 lum. Pygofer large, with two brown projecting lateral 

 lobes, which are blunt, and support a tapering penis. 

 The yellow internal space contains the anal tube with 

 its brown cauda. Antennae and legs orange-yellow. 

 Elytra hyaline, and about twice the length of the 

 abdomen. The veins fine and brown, furnished with 

 delicate setae. The five apical cells are long, and dis- 

 posed something like those of Lihurnia scuteUata. 

 Wings iridescent, and rather liable to variation, even 

 in the same insect. Frons yellow, with three strongly 

 marked carinas, which, diverging from the insertion of 

 the labrum, proceed through the clypeus to the base 

 of the eyes, and run over the frons to the crown 

 above. The central keel forks at about its own middle, 

 and each limb runs over the vertex and forms four 

 carinas on the crown. Some specimens show a short 

 brown line at the apex of the elytra, and have black 

 hind legs. The second antennal joint is about three 

 times the length of the first ; it is yellow, dilated at 

 the tip, rough, and ends with a small bulb with the 

 seta. 



Brachelytrous female. The upper parts are coloured 

 much like those of the male, only paler. The abdo- 

 men is yellow with brown blotches on the sides, and a 

 series of brown spots down each side of the dorsum. 

 Anal tube cylindrical, ending with a brown cauda. 

 Elytra hyaline, grey, and about half the length of the 



F'2 



