8 A MONOGKAPH OF THE AUSTRALIAN MEMBRACID^^, 



Prothorax piceous, densely punctured, furnished with an ahiiost 

 obsolete median line, convex; posterior process broad and convex 

 at base, much narrowed at middle, then very slender and acumi- 

 nate, a longitudinal ruga below the middle, posteriorly elevated 

 in a carina, apex distinctly curved downward, reaching tip of 

 abdomen. 



Tegmina vitreous, obscure at base, base and costa dilute piceous, 

 radial and ulnar veins towards apex and veins including the dis- 

 coidal cells blackish, the two discoidal cells of equal length. 



Chest with sides dense silky gray, pubescent. 



Legs with femora and base of tibias piceous, rest of tibiae 

 sordid yellow, tarsi piceous. 



Long. 7; lat. 3 mm. 



Type in Mus. Holm. 



Food plant, Hakea sp. 



Hah. — Rockhampton (Stal), Brisbane, Cairns, Q. (Tryon) ; 

 Tweed River, N.S.W. (Froggatt); Williamstown, S.A. (Tepper). 



As T. convexics and Sertorius australis differ only in absence 

 and presence of lateral horns, I believe them to be two forms of 

 one species. 



D I N G K A N A, gen.nov. 



Head triangular, punctured, pubescent, lobed on each side on 

 lateral borders; ocelli above a line passing through centre of eyes 

 to which they are a little nearer than to each other. 



Prothorax rises convexly from base into the form of a dome, 

 unarmed above lateral angles, coarsely punctured, median longi- 

 tudinal carina anteriorly absent or obsolete ; posteriorly the 

 dorsum lightly descends into the posterior process which is very 

 broad at base, gradually'- narrowed to middle, then attenuated to 

 apex which is decurved reaching apex of abdomen; sides and 

 dorsum of posterior process lightly sinuate. 



Tegmina lanceolate, vinaceous, opaque at base, with three dis- 

 coidal cells, the second and third placed between the two ulnar 

 veins, the first between apex of radial and base of second apical 



