20 A MONOGEAPH OF THE AUSTRALIAN MEMBRACID^E, 



Ilnb.— ^ew Holland (Fairmaire) : Gosford, N.S.W. (Lea): 

 Victoria (Kershaw) : Tasmania (Simson) : Williamstown, South 

 Australia (Tepper). 



Mv opinion is that Terentius convexics, Stal, is a horned form 

 of this species. 



*S. ACANTHASPis, Fairm. 



1846, Centrohis acmithaspis, Ann. Soc. Ent. Fr. (2), iv. p. 515. 

 1851, Centrotus decisus. Walk., List Hom. Brit. Mus. p. 621. 



Head spindle-shaped, apex not produced, brown, punctured, 

 lateral borders a trifle foliaceous; ocelli on a line with the centre 

 of and approaching to the eyes; with a median carina; base 

 lightly curved. 



Prothorax punctured, brown, with scattered yellow hairs, and 

 a smooth black scar on each side in front; lateral horns turned 

 outward, a little upward and forward, strongly triquetrous, bases 

 far apart, apices obtuse ; posterior process thickened at base, 

 gradually acuminate to the decurved apex which reaches the tips 

 of the tegmina, passing apex of abdomen, the inferior edge 

 sinuate. There is some yellow pubescence on the sides of the 

 chest and on the scutellum. 



Tegmina transparent, a little smoky yellow, bases of clavus 

 and radial cell, and nearly all of the costal cell, with the veins, 

 ferruginous. 



Legs ferruginous. 



Long. 9; lat. 3 mm., inch lat. corn. 5 mm. 



Types in the ^luseum of the Entomological Society of Fiance 

 and the British Museum. 



ffab. — Port Jackson (Fairmaire); Tweed R., Tamworth, Well- 

 ington, N.S.W. (Froggatt) : Highfields, Q. (Tryon) : Murray R., 

 South Australia (Tepper). 



*S. GIGANTICUS, sp.nOV. 



(Plate i., fig 1.) 



Head black, broad, punctured and impressed, apex produced, 

 lateral borders with a denticle near base; ocelli equidistant from 



