18 



A MONOGRAPH OF THE AUSTRALIAN MEMBRACID.E, 



Dedicated to Mr. J. A. Kershaw, of the Melbourne Museum, 

 who supplied me with a number of interesting Australian forms. 



Sertorius, Stal. 

 1866, Hemiptera Africana, iv. p. 88. 



Prothorax rising vertically from the base, furnished with an 

 acute or equally broad horn, on each side, above lateral angles, 

 distant between bases; posterior process touching scutellum, not 

 distant; the median carina not elevated, but percurrent. 



Tegmina with tive oblong apical and two discoid al cells; the 

 two ulnar veins of the corium joined near base by a transverse 

 venule; exterior discoidal cell not petiolate; costal cell punctured 

 and opaque, extended beyond radial ; clavus with two veins, 

 gradually narrowed to apex. 



Wings with four apical cells. 



Scutellum transverse or almost equally long and wide, apex 

 truncate, ending on each side, in a little tooth. 



Tibiae and tarsi simple, not dilated. 



Type, Centrohis australis, Fairm. 



Synopsis of Species. 



1 (2). Lateral horns very short and small, third apical cell of 



tegmina long, straight ; females with, and males 

 destitute of, transverse venule between two ulnar 

 veins, near base austraUs. 



2 (1). Lateral horns large and strong. 



3 (10). Lateral horns conical, gradually narrowed towards 



apices. 



4 (9). Third apical cell of corium long, narrow. 



5 (6). Third apical cell of corium furnished with transverse 



venules a reolatus. 



6 (5). Third apical cell of corium destitute of transverse 



venules. 



7 (8). Lateral horns turned outward and backward, short ; 



tegmina more or less piceous brevicornis. 



8 (7). Lateral horns turned outward and forward; tegmina 



transparent smoky yellow Tepperi. 



