BY F. W. GODING. 19 



9 (4). Third apical cell of corium not narrow; apex of first 

 apical cell of corium not extended beyond base of 

 second apical cell ; tegmina colourless, veins 

 piceous, cells short curvica itdus. 



10 (3). Lateral horns with sides parallel, not, or very slightly, 



narrowed towards apices which are subtruncated, 

 anterior angle rounded, posterior acute. 



11 (12).Lateral horns turned directly outward, lightly upward, 



broad at bases, widely separated, very strong fjiganticu>t. 



12 (11). Lateral horns long, slender, very lightly curved, turned 



outward, strongly upward, narrow at base acanthasins. 



■^S. AUSTRALis, Fairm. 



1846, Centrotus aiistralis, Ann. Soc. Enb. Fr. (2), iv. p. 518. 

 1858, Ce7itrotus ohstans] Walk., List Horn. Brit. Mus. Suppl. 



p. 162. 

 1858, Centrotus binotatus, Walk., Ins. Saund. Horn. p. 81. 



Head piceous, broad, short, a small tooth on each side of the 

 apex which is curved backward. 



Eyes large, prominent beyond sides of the prothorax; ocelli 

 above line passing through centre of the eyes, to which they 

 approach more nearly than to each other; base lightly curved. 



Prothorax piceous, convex, coarsely punctured, with a median 

 longitudinal carina; lateral horns very small, short, conical, 

 •extended directly outward; posterior process broad at base, 

 gradually narrowed to the middle, thereafter slender, acuminate, 

 decurved, reaching apices of tegmina; at the base it is notched 

 showing the white tomentum on the scutellum. 



Tegmina vitreous, tinged with yellow, the base, a spot at the 

 interior angle, and veins ferruginous; a transverse venule between 

 two ulnar veins near base in the female, absent in the male; 

 clavus vitreous. 



Legs ferruginous; tarsi piceous. 



Long. 9 7, (J 6; lat. 9 3, ^ 21 mm.; inch lat. corn. 9 4, (J 3 mm. 



Types in Coll. Fairmaire, British Museum and Coll. W. W. 

 Saunders. 



