292 Annals of the Carnegie Museum, 



k. Vertex in front margined with a carina, on 

 each side towards the middle of the eyes 

 branching out into an obtuse tooth, the 

 fastigium angulately defiexed. Tegmina 

 with the radial branch not forked, joined 

 to the ulnar vein by an oblique veinlet. 

 Eclemna Brunner. 

 kk. Vertex in front obtuse, the fastigium roundly 

 defiexed. Tegmina with the radial branch 

 forked, or, in the manner of the genus pre- 

 ceding, joined to the ulnar vein by an 

 oblique veinlet. 

 I. Size larger. Pronotum with the disc nar- 

 rowed in front, the lateral lobes obtusely 

 inserted, highest back of their middle. 

 Anterior margin of the tegmina at their 

 base black-bordered. Ovipositor very 

 much roughened, with its apex colored 



black Plagiopleura Stal. 



II. Size smaller. Pronotum with the disc of 

 equal width in front and behind, the 

 lateral lobes acutely inserted, highest 

 at their middle. Anterior margin of 

 the tegmina ferruginous. Ovipositor 

 granulose, its apex ferruginous. 



Euthyrrhachis Brunner. 

 jj. Branch of the posterior radial vein forked, de- 

 flexed to the posterior margin of the elytra. 

 Ovipositor but little curved and somewhat 

 obtuse, the margins entire or subcrenulate at 



its apex Parahlela Brunner. 



hh.^ Vertex rounded, strongly declivant. Pronotum more 

 or less saddle-shaped, the lateral lobes roundly 

 inserted. Antennae at base heavy, often hirsute. 

 (Anterior tibiae above entirely unarmed. Wings 

 provided with a'distinct apical triangular field.) 

 i. Antennae very heavy at their base and always hir- 

 sute. Color blackish, steel-blue, or ferruginous. 



Scaphura Kirby. 

 ii. Antennae less heavy at base and generally smooth, or 

 only sub-hirsute. Color fuscous. 



Gytnnocera Serville. 

 gg. Pronotal carinae more or less elevated and dentate, or 



' Walker's genus Itarissa (see Cat. Derm. Salt. Brit. Mus., II, p. 389) is placed 

 in the vicinity of Posidippus by Kirby. According to the present table, however 

 it would not fall in section gg because it lacks the lateral pronotal carinae. 



